<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:10pt">Caro João Paulo e restantes membros,<br><div style="font-family: arial,helvetica,sans-serif; font-size: 10pt;"><br>Não querendo ser indelicado, mas tenho de aproveitar esta oportunidade para voltar a chamar a atenção para a:<br><br>"URGÊNCIA EM <span style="font-weight: bold;">DAR PRIORIDADE AO SOFTWARE LIVRE / OPEN SOURCE</span> NO ENSINO / EDUCAÇÃO" <br><br>É tempo de ensinar os alunos com Software Livre!<br>E está na mão dos professores tomar essa iniciativa!<br><br style="font-weight: bold;"><span style="font-weight: bold;">1. Porquê considerar software livre numa instituição de ensino?</span><br><span><a target="_blank" href="http://www.ensinolivre.pt/?q=node/91">http://www.ensinolivre.pt/?q=node/91</a></span><br><br><span style="font-weight: bold;">2. Universidade de Coimbra (Ver slide 38
 e seguintes...)</span><br><span><a target="_blank" href="http://www.slideshare.net/ricardodepinho/gisvm-fluc2010-1amp2-final-4401172">http://www.slideshare.net/ricardodepinho/gisvm-fluc2010-1amp2-final-4401172</a></span><br><br><span style="font-weight: bold;">3. Why Schools Should </span><span style="background-color: transparent; font-weight: bold; text-decoration: underline;">Exclusively</span><span style="font-weight: bold;"> Use Free Software</span><br><span><a target="_blank" href="http://www.gnu.org/philosophy/schools.html">http://www.gnu.org/philosophy/schools.html</a></span><br><br>Todos concordamos que o objecto de ensino não é o software mas sim o conhecimento!<br>Logo, se é possível transmitir o conhecimento com Software Livre, tanto melhor, acrescenta-se ao acto de ensino uma "pitada" de <span style="font-weight: bold; background-color: rgb(255, 255, 0);">cidadania</span>, <span style="background-color: rgb(255, 255, 0); font-weight:
 bold;">liberdade</span> e <span style="background-color: rgb(255, 255, 0); font-weight: bold;">espirito de colaboração</span>, que NUNCA FEZ MAL A NINGUÉM! ;-)<br><br><br><span style="font-weight: bold;">Existe um Grupo de Trabalho, da OSGeo Portugal, dedicado a incentivar a utilização de Software Aberto SIG no Ensino.</span><br style="font-weight: bold;"><span><a target="_blank" href="http://wiki.osgeo.org/wiki/">http://wiki.osgeo.org/wiki/</a> Ensino_/_Educação</span><br><br>Junte-se a nós para promover esta ideia e a concretizá-la! Portugal e os alunos agradecem...<br><span><a target="_blank" href="http://lists.osgeo.org/mailman/listinfo/educacao-pt">http://lists.osgeo.org/mailman/listinfo/educacao-pt</a></span><br><br>Neste caso em concreto, aprender a transformar coordenadas, é muito mais didáctico e eficaz com Software Livre, por isso, ALTAMENTE RECOMENDADO!!!<br><br>Encontra nesta página, do Grupo de Trabalho de Sistemas de
 Coordenadas, <br><span style="font-weight: bold;">bastantes dicas para resolver o referido problema com recurso a Software Livre SIG:</span><br style="font-weight: bold;"><span><a target="_blank" href="http://wiki.osgeo.org/wiki/Sistemas_de_Coordenadas_de_Portugal">http://wiki.osgeo.org/wiki/Sistemas_de_Coordenadas_de_Portugal</a></span><br><br><br>Abraço,<br>Ricardo Pinho<br><br><br><div style="padding-left: 5px; margin: 5px 0px 5px 5px; border-left: 2px solid rgb(16, 16, 255); font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">De:</span></b> João Paulo Hespanha &lt;jphespanha@ua.pt&gt;<br><b><span style="font-weight: bold;">Para:</span></b> eng_geografo@yahoogroups.com<br><b><span style="font-weight: bold;">Enviadas:</span></b> Quarta-feira, 2 de Junho de 2010 18:25:05<br><b><span style="font-weight: bold;">Assunto:</span></b> [eng_geografo]
 Transformação Datum ETRS89 -&gt; Datum Lisboa?<br></font><br>






<span style="display: none;">&nbsp;</span>

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</p><div class="Section1">

<p class="MsoNormal">Caros Colegas:</p> 

<p class="MsoNormal"> &nbsp;</p> 

<p class="MsoNormal">No âmbito de um projecto de Aplicações SIG aqui da ESTGA,
constatei que o ArcGIS não fornece transformações de Datum entre o sistema de
coordenadas ETRS89-PTM06 e o sistema de Coordenadas Gauss-Hayford, Datum
Lisboa. Apenas a transformação inversa consta da lista de transformações, o que
aliás tem a sua lógica, pois importa adoptar esta nova referência.</p> 

<p class="MsoNormal"> &nbsp;</p> 

<p class="MsoNormal">Sucede contudo que todos os outros dados que os alunos
possuem (para além da CAOP) estão em Data mais antigos, quer o Lisboa, quer o
D73.</p> 

<p class="MsoNormal"> &nbsp;</p> 

<p class="MsoNormal">Deste modo, se alguém conhecer parâmetros, de preferência
BW(7), para efectuar esta transformação, ou trataria de a definir no ArcGIS. Já
agora, poderia juntar também a transformação para o Gauss-Hayford, D73.</p> 

<p class="MsoNormal"> &nbsp;</p> 

<p class="MsoNormal">E prometo desde já que daqui para a frente, as análises e
resultados finais apresentados no âmbito destes projectos deverão ser expressos
na nova referência Europeia!</p> 

<p class="MsoNormal"> &nbsp;</p> 

<p class="MsoNormal">Com os Melhores Cumpimentos,</p> 

<p class="MsoNormal"><span style="font-size: 10pt; color: blue;">João Paulo da Fonseca Hespanha de Oliveira</span></p> 

<div style="border-bottom: 1pt solid windowtext;">

<p class="MsoNormal"><span style="font-size: 7.5pt;">Professor Adjunto - Tecnologias da Informação
- Ramo da Informação Geográfica</span></p> 

</div>

<p class="MsoNormal"><span style="font-size: 10pt; color: green;"><a rel="nofollow" target="_blank" href="http://www.estga.ua.pt/" title="ESTGA"><span style="color: green;">Escola Superior de Tecnologia e Gestão de
Águeda</span></a></span></p> 

<p class="MsoNormal"><span style="font-size: 10pt; color: green;"><a rel="nofollow" target="_blank" href="http://www.ua.pt/" title="UA"><span style="color: green;">Universidade
de Aveiro</span></a></span></p> 

<p class="MsoNormal">Apartado 473 <br>
3754 – 909 Águeda</p> 

<p class="MsoNormal"><span style="font-size: 12pt;"> &nbsp;</span></p> 

<p class="MsoNormal"><span style="font-size: 10pt;">Tel.
+351 234611546</span></p> 

<p class="MsoNormal"><span style="font-size: 10pt;">Fax.
+351 234611540</span></p> 

<p class="MsoNormal"> &nbsp;</p> 

</div>






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