<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Boa noite, Joana,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Provavelmente aconteceu o seguinte:</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">1 - foram calculados os declives e inscritos na tabela de atributos, através do sub-menu "Calcular declives de caminhos";</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">2 - depois correram o sub-menu "Converter M=Altitude para M=Declive", que origina a alteração de todos os valores de M, que passam a conter os valores do declive;</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">3 - com a vossa PolylineM alterada como se indica no passo anterior, voltaram, inadvertidamente, a correr o sub-menu "Calcular declives de caminhos", que recalculou os declives, mas agora com base nos anteriores valores de declive e não em valores de altitude, ou seja, : calcularam "declives de declives" !</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Como poderá verificar no ficheiro das instruções, na pág. 9 aparece o seguinte aviso:</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><p class="MsoNormal" style="margin-bottom:6pt;text-align:justify;line-height:17pt"><span style="font-family:arial"><b>C) <u>Calcular os declives médio, máximo, e a
localização do declive máximo<span></span></u></b></span></p>
<p class="MsoNormal" style="margin-bottom:6pt;text-align:justify;line-height:17pt"><b><span style="font-family:arial;color:blue">Nota: certifique-se,
utilizando o botão "A", que os valores de M se referem à <u>altitude</u>!<span></span></span></b></p></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Quando correu o sub-menu "Converter M=Altitude para M=Declive", foi efectuado um backup da sua PolylineM (com M=Altitude), sendo que esta shape deverá estar guardada algures no seu disco com o nome "theme1.shp" ou "theme<b>n</b>.shp" se nessa pasta já existiam outras shapes.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Se por acaso perdeu o rasto a este ficheiro, volte à sua PolylineZ e repita todos os sub-menus.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Peço também a sua atenção para nunca se esquecer de separar (explodir) os elementos Multi-part da sua Polyline 2D, pois estes elementos Multi-part originam graves erros nos processos subsequentes.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Tenciono alterar esta extensão, colocando uma mensagem de aviso para alertar o utilizador quando este tentar recalcular os declives na PolylineM com M=Declives, e também para a extensão efectuar, por defeito, a separação dos elementos multi-part.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Espero que tenha sido este o problema!</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Sinceros cumprimentos,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">António Almeida</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">PS: amanhã estarei o dia inteiro na serra a demarcar propriedades sem cadastro e só estarei contactável por volta das 6 da tarde.</div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-12-07 21:21 GMT+00:00 Joana Mendes <span dir="ltr"><<a href="mailto:joana.939.mendes@gmail.com" target="_blank">joana.939.mendes@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Caro Antonio<div>Muito obrigada pela extensão, contudo o meu colega já tinha criado a shapefile de pontos utilizando outra extensão que ele já tinha.</div><div>Construimos o raster de elevação que todos os meus colegas consideraram de muito boa qualidade, e determinámos os declives.</div><div>No entanto aconteceu algo que não conseguimos perceber, e estivemos toda a tarde a tentar resolver a questão, mas sem resultado. O problema é que os declives atingem valores muito altos (600, 700), sem correspondência com o raster. Será que fizemos alguma coisa mal feita? Se quiser, podemos mandar a shapefile com estes valores.</div><div>Ficamos a aguardar o seu contacto (amanhã estarei disponível para trocar impressões consigo).</div><span class="HOEnZb"><font color="#888888"><div>Joana</div></font></span></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">No dia 7 de dezembro de 2016 às 11:46, Antonio Sobral Almeida <span dir="ltr"><<a href="mailto:sobral.almeida@gmail.com" target="_blank">sobral.almeida@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Bom dia, Joana,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">1 - discrepância de resultados: provávelmente a Joana calculou (à mão) os declives seccionando os caminhos pelas curvas de nível, e calculando o declive de cada um destes segmentos; tambem a sua GRID poderá ter sido calculada pelo método IDW, método este que "suaviza" a variação brusca de declives; isto tudo conjugado dará a diferença que encontrou nos declives máximos; como se diz no manual, dever-se-á sempre recorrer a uma carta topográfica fidedigna (Cartas Militares, por exemplo) para verificar os declives máximos, sobretudo os de maior valor;</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">2 - infelizmente a ESRI fechou o site dos scripts da ArcView! No entanto, o seu colega pode usar um qualquer processo para criar uma shape de pontos, espaçados de uma determinada distância; convém que fiquem, na tabela de atributos, as cotas das isolinhas que deram origem aos pontos; em anexo segue o ficheiro zipado da extensão Mileage Maker.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Qualquer dúvida não hesite em contactar.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Cumprimentos,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">António Almeida<br></div></div><div class="m_8898912961823809647HOEnZb"><div class="m_8898912961823809647h5"><div class="gmail_extra"><br><div class="gmail_quote">2016-12-06 18:28 GMT+00:00 Joana Mendes <span dir="ltr"><<a href="mailto:joana.939.mendes@gmail.com" target="_blank">joana.939.mendes@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Caro António<div>Muito, muito obrigada pela sua ajuda! Tenho um colega senior que ainda trabalha com o Arcvieiw 3.2, onde a sua extensão foi montada, e fizémos um ficheiro polylineZ baseado numa grid de elevação de 30 metros, e depois criamos a polilineM, e calculámos os declives, seguindo o manual. Em seguida calculámos à mão os declives de alguns caminhos curtos, e vimos que os declives médios são praticamente iguais aos calculados pela extensão, apenas nalguns declives máximos aparecem diferenças de 8 ou 9% em relação ao calculado a mão! As coordenadas dos declives máximos dão muito jeito para localizar estes pontos, que é muito importante para o meu trabalho de mestrado.</div><div>O meu colega diz que não consegue encontrar o site da esri onde devem estar as extensões, porque ele diz que gostava de criar uma grid de 10 metros a partir das curvas de nível, mas não tem a extensão milege maker.</div><div>Mais uma vez muito obrigada pela sua preciosa ajuda!</div><span class="m_8898912961823809647m_4955522309882869455HOEnZb"><font color="#888888"><div>Joana</div></font></span></div><div class="m_8898912961823809647m_4955522309882869455HOEnZb"><div class="m_8898912961823809647m_4955522309882869455h5"><div class="gmail_extra"><br><div class="gmail_quote">No dia 6 de dezembro de 2016 às 11:19, Antonio Sobral Almeida <span dir="ltr"><<a href="mailto:sobral.almeida@gmail.com" target="_blank">sobral.almeida@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Bom dia, Joana,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Há uns dez anos atrás, deparei-me com um problema em tudo idêntico ao seu: tinha uns centos de quilómetros de estradas florestais em terra batida, pela serra afora, e, para além de outras características, era necessário determinar, com muita aproximação, os declives longitudinais, que, por sua vez, iriam determinar os tipos de viaturas de bombeiros que podiam passar nesses caminhos, para acederem, o mais rápidamente possível, a um determinado local para combate directo ao fogo.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Fartei-me tambem de procurar por algo mais ou menos robótico para determinar declives, mas depressa concluí que tinha que meter mãos à obra, e organizar uma extensão que fizesse esse trabalho.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">De uma extensão muito simples, foi evoluindo, e hoje vai na versão 5.8, que pode descarregar do link abaixo, juntamente com as respectivas instruções, e faz aquilo que você pretende.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Caso surja alguma dúvida, não hesite em contactar por este site, para trocarmos experiências e ideias sobre este assunto.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default"><font face="verdana, sans-serif"><a href="https://www.dropbox.com/s/qjl5trztjrcm3c7/declives_caminhos_5_8.zip?dl=0" target="_blank">https://www.dropbox.com/s/qjl5<wbr>trztjrcm3c7/declives_caminhos_<wbr>5_8.zip?dl=0</a></font><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Boa sorte</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">António Almeida</div></div></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227HOEnZb"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227h5"><div class="gmail_extra"><br><div class="gmail_quote">2016-12-02 19:19 GMT+00:00 Joana Mendes <span dir="ltr"><<a href="mailto:joana.939.mendes@gmail.com" target="_blank">joana.939.mendes@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Obrigada Nelson, dei uma vista de olhos, mas o meu problema é simples: falta de tempo (tenho poucas semanas para apresentar o trabalho com que me comprometi julgando, talvez ingénuamente, que esta questão dos declives de caminhos já estaria mais que resolvida), 2600 km de caminhos divididos em 4 mil e tal troços!<div>Sem uma qualquer ferramente que me automatize completamente esta tarefa, não me safo!</div><span class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985HOEnZb"><font color="#888888"><div>Joana</div></font></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985HOEnZb"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985h5"><div class="gmail_extra"><br><div class="gmail_quote">No dia 2 de dezembro de 2016 às 06:45, Nelson Silva <span dir="ltr"><<a href="mailto:nelson.jgs@gmail.com" target="_blank">nelson.jgs@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>Olá Joana,</div><div id="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060AppleMailSignature"><br></div><div id="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060AppleMailSignature">Deparei-me com o post abaixo. Vi só na diagonal, mas parece que aborda aquilo que pretende.</div><div id="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060AppleMailSignature"><br></div><div id="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060AppleMailSignature"><p style="margin:0px;font-size:12px;line-height:normal;font-family:Helvetica"><span style="font-size:12pt"><a href="http://themagiscian.com/2016/11/28/dem-slope-calculations-bicycle-routing-postgis/" target="_blank">http://themagiscian.com/2016/1<wbr>1/28/dem-slope-calculations-bi<wbr>cycle-routing-postgis/</a></span></p><p style="margin:0px;font-size:12px;line-height:normal;font-family:Helvetica"><br></p><p style="margin:0px;font-size:12px;line-height:normal;font-family:Helvetica">Espero que ajude alguma coisa.</p><p style="margin:0px;font-size:12px;line-height:normal;font-family:Helvetica"><br></p><p style="margin:0px;font-size:12px;line-height:normal;font-family:Helvetica">Bom trabalho</p><p style="margin:0px;font-size:12px;line-height:normal;font-family:Helvetica">Nelson silva </p><br>Enviado do meu iPhone</div><div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214h5"><div><br>No dia 01/12/2016, às 23:14, Joana Mendes <<a href="mailto:joana.939.mendes@gmail.com" target="_blank">joana.939.mendes@gmail.com</a>> escreveu:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div>Caríssimos,</div><div><br></div><div>Depois de muito navegar pela Internet, de ter lido com a máxima atenção os vossos posts, concluo (por agora) que:</div><div><br></div><div>1 - calcular declives de caminhos tem mesmo muito que se lhe diga (conforme diz Alexandre);</div><div>2 - o MDT (ou melhor, a sua qualidade) tem um papel fulcral neste processo; utilizar um raster de declives (slope grid) é mesmo para esquecer!</div><div>3- ainda não consegui atinar com o processo sugerido por André; mas o meu problema continua a ser o de ter 2600 km, distribuídos por 4763 troços, é uma missão (quase) impossível! Só mesmo um processo automatizado consegue dar conta do recado.</div><div><br></div><div>Continuarei a procurar activamente pela Internet, e fico (ansiosamente) à espera de uma boa ideia para isto!</div><div><br></div><div>Obrigadíssima de qualquer maneira</div><div>Joana</div></div><div class="gmail_extra"><br><div class="gmail_quote">No dia 30 de novembro de 2016 às 07:50, Joana Mendes <span dir="ltr"><<a href="mailto:joana.939.mendes@gmail.com" target="_blank">joana.939.mendes@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Muito obrigada pelas respostas. Estou a estudá-las e voltarei ao contacto em breve. Joana</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060HOEnZb"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060h5"><div class="gmail_extra"><br><div class="gmail_quote">No dia 29 de novembro de 2016 às 09:37, Pedro Venâncio <span dir="ltr"><<a href="mailto:pedrongvenancio@gmail.com" target="_blank">pedrongvenancio@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Por acaso lembrei-me hoje de manhã do teu plugin Alexandre! De facto existem diversas formas de chegar a uma solução. <br><br>O único [e principal] problema são os dados de que se dispõe para aplicar essas técnicas. Há uns meses tive de calcular o declive de uma estrada com precisão e em muito pouco tempo. Até tinha um conjunto bastante bom de pontos naquela zona, mas mesmo assim não correu bem (tinha declives de mais de 80%), porque os pontos representavam a cota do terreno, que era extremamente acidentado, e o perfil da estrada ficou totalmente "diluído" na interpolação para o cálculo do MDT. A solução, nessa ocasião, passou mesmo por usar apenas os pontos que tinha na estrada e fazer os cálculos do declive com a diferença de cota, numa folha de cálculo. Mais tarde melhorei a precisão, fazendo o levantamento do eixo da estrada com GNSS, com pós-processamento.<br><br>Quando a grande precisão não é um requisito fundamental, como por exemplo na preparação de provas desportivas, o que faço é o que descrevi no email anterior.<br><br></div><div>Cumprimentos,<br></div><div>Pedro Venâncio<br><br></div><div><br></div></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881HOEnZb"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881h5"><div class="gmail_extra"><br><div class="gmail_quote">No dia 29 de novembro de 2016 às 08:17, Alexandre Neto <span dir="ltr"><<a href="mailto:senhor.neto@gmail.com" target="_blank">senhor.neto@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">O problema dos declives em caminhos(ou em quaisquer outras linhas) tem muito que se lhe diga, porque a maior parte das vezes o caminho não toma a direcção do declive máximo (que é o que obtemos da ferramenta slope), mas até o de menor declive com caminhos de vão ao longo da colina.</p>
<p dir="ltr">A meu ver, o procedimento a adoptar é parecido com o que o André descreveu, mas em vez de se usar o plugin sample points para obter declives de um raster, deve obter -se alturas. E depois pode-se fazer o cálculo dos declives usando a diferença de elevação e as coordenadas X e Y de de cada vértice consecutivo.</p>
<p dir="ltr">Todo o processo pode ser feito usando um pequeno script em Python. O código do plugin walking time, quase faz o que precisas. Era uma questão de o alterar ligeiramente. Para recolher a informação necessária. (Até era capaz de dar um plugin útil)</p>
<p dir="ltr">Alexandre Neto</p><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488HOEnZb"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488h5">
<br><div class="gmail_quote"><div dir="ltr">A ter, 29/11/2016, 07:55, Andre Mano <<a href="mailto:andre.s.mano@gmail.com" target="_blank">andre.s.mano@gmail.com</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">O problema que descreves parece ser simples mas a execucao nao e assim tao simples, mas e possivel. Uma outra alternativa seria algo do genero:<div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">1 - extrair os vertices de cada um dos caminhos como pontos e agrupar esses pontos segundo o caminho a que pertencem. Precisas de dois passos para isso:</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"> a) - <b style="font-style:italic" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Vector > Geometry Tools > Extract Nodes </b>(obter os vertices das linhas)</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><b class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><i class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></i></b></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><b style="font-style:italic" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"> b) - Vector > Data Management Tools > Join by location </b>(adicionar a tabela de atrubutos dos vertices ao nome/id de onde provem cada um dos vertices)</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">2 - <b class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><i class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Vector > Geometry Tools > Add geometry columns </i></b>para adicionar as coordenadas X e Y de cada um destes pontos</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">3 - Utilizar o plugin <b class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><i class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Point Sampling Tool</i></b> para extrarir os valores de declive do raster</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Agora tens todos os dados que necessitas na tabela de atributos. Apenas tens que filtrar/usar field calculator os resultados para obter o que precisas (<span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">declives médio, máximo e a localização do declive máximo). Talvez mais facil trabalhar esta informacao no Open Office Calc, Excell ou algo do genero e depois adicionar a tabela resultante ao QGIS.</span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">A partir destes dados, podes agora produzir uma tabela com a informacao necessaria (que devera ser uma tabela com 5 atributos - nome/id do caminho | </span><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">declives médio | máximo | coodenada X do declive máximo | coordenada Y do declive maximo| </span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Resta um ultimo passo:</span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">4 - Fazer um Join by attributes em que a condicao do join e o id/nome da linha, que em principio sera coincidente tanto para o layer original dos caminhos, como na tabela que contem a nova informacao.</span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">E claro que todo este procedimento parte do principio que o raster de declives tem qualidade suficiente, o que podera ser um problema, como disso o Pedro.</span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Espero que ajude,</span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></span></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Andre Mano</span></div></div><div class="gmail_extra m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="gmail_extra m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="gmail_quote m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">2016-11-29 2:02 GMT+01:00 Pedro Venâncio <span dir="ltr" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><<a href="mailto:pedrongvenancio@gmail.com" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" target="_blank">pedrongvenancio@gmail.com</a>></span>:<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><blockquote class="gmail_quote m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Boa noite Joana Mendes,<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div>Os procedimentos para calcular os declives e associá-los à tabela de atributos das linhas são relativamente simples. Uma das possibilidades seria calcular os declives, converter o resultado para vetor e fazer um intersect com os caminhos.<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div>O problema está, a meu ver, na resolução do MDT. A menos que seja uma área muito plana e homogénea, e o MDT tenha elevadíssima resolução, ou dificilmente conseguirá chegar aos declives dos caminhos com uma precisão aceitável. Se um caminho tiver 4 / 5 metros de largura, seria necessário um MDT de grande resolução espacial e grande precisão altimétrica para refletir corretamente esse lineamento. Só com um levantamento do tipo LiDAR. <br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">O que poderá fazer é o levantamento dos caminhos com GPS/GNSS em modo cinemático, RTK ou pós-processado, usando as estações das redes RENEP / SERVIR.<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div>Cumprimentos,<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div>Pedro Venâncio<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div></div></div><div class="gmail_extra m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="gmail_quote m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796h5 m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">No dia 28 de novembro de 2016 às 22:20, Joana Mendes <span dir="ltr" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><<a href="mailto:joana.939.mendes@gmail.com" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" target="_blank">joana.939.mendes@gmail.com</a>></span> escreveu:<br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div></div><blockquote class="gmail_quote m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796h5 m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><div dir="ltr" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Date: Mon, 28 Nov 2016 20:40:18 +0000</span><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" style="font-size:12.8px"><span style="font-size:12.8px" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Subject: Declives de caminhos rurais</span><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" style="font-size:12.8px"><div dir="ltr" class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg" style="font-size:12.8px">Bom dia a todos!<div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Trabalho com o QGIS há cerca de 1 ano, e preciso de calcular e colocar na tabela de atributos os declives médio, máximo e a localização do declive máximo, de cada troço de uma rede de caminhos rurais, quase todos em terra batida, num total de 2639 km !</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Tentei fazer isto através de um raster de elevação (modelo digital do terreno), mas os resultados foram contraditórios com a realidade num número de casos muito elevado, o que inviabiliza este método.</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Calcular estes valores troço a troço daria para um exército de utilizadores a trabalhar durante muitas semanas.</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg">Alguém me pode indicar se existe algum método, seja um plugin ou outro método qualquer para calcular estes valores de forma automática?</div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"><br class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173gmail_msg"></div><div class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488m_-7828990820814668173m_-8997015247634050796m_-7923612924298425749m_-3639224194849306097gmail-m_-2663495281391975995gmail_msg 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</blockquote></div><div dir="ltr">-- <br></div></div></div><span class="m_8898912961823809647m_4955522309882869455m_-6145567476301505227m_-4122534165775243985m_2658048265145154214m_6378871426024853060m_-2622812146310793881m_4791406880021136488HOEnZb"><font color="#888888"><div data-smartmail="gmail_signature"><div dir="ltr"><div>Alexandre Neto</div><div>---------------------</div><div>@AlexNetoGeo</div><div><a href="http://sigsemgrilhetas.wordpress.com" target="_blank">http://sigsemgrilhetas.wordpre<wbr>ss.com</a></div><a href="http://gisunchained.wordpress.com" target="_blank">http://gisunchained.wordpress.<wbr>com</a><br></div></div>
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