[Portugal] duvidas sobre openlayers
Pedro Costa
pedrocostaarma sapo.pt
Terça-Feira, 13 de Dezembro de 2011 - 10:05:20 EST
Hugo vou experimentar mas tenho uma dúvida:
como disse "Abri o html original e movi até a área de vizela, fiz map
extend com o firebug obtive os valores, substitui no html mas não
resultou, abre numa area completamente diferente."
Acho que este metodo devia resultar mas a verdade é que as coordenadas
definidas no html orignal não têm nada a ver com os que retorna quando
faço map extend na área original.
Sabes a razão disto?
On 13-12-2011 15:01, Hugo wrote:
> Olá Pedro,
>
> tens que fazer um map.setCenter();
>
> Abc,
> Hugo
>
> 2011/12/13 Pedro Costa <pedrocostaarma sapo.pt
> <mailto:pedrocostaarma sapo.pt>>
>
> Não entendo porque inseri os bounds da area que pretendo e ele
> abre com uma area completamente diferente...
>
>
>
>
>
>
>
>
>
>
> On 13-12-2011 12:57, Hugo wrote:
>> Aqui vai.
>> um abc,
>>
>> Hugo
>>
>>
>> map.events.register('zoomend', map, function(){
>> var mapProj = map.getProjection();
>> var mapZoom = map.getZoom();
>> var mapRes = map.getResolutionForZoom(mapZoom);
>> if (mapProj == 'EPSG:900913' && mapRes > 306){
>> map.zoomToScale(866688.0326989387, true);
>> }
>> });
>>
>> 2011/12/13 Pedro Costa <pedrocostaarma sapo.pt
>> <mailto:pedrocostaarma sapo.pt>>
>>
>> Conheces algum exemplo do evento zoomend para eu tentar
>> guiar-me?
>>
>> Obrigado
>>
>> Em 13-12-2011 12:45, Hugo escreveu:
>>> Experimenta adicionar o seguinte às opções do teu mapa:
>>>
>>> restrictedExtent: new OpenLayers.Bounds(.....);
>>>
>>>
>>> De qualquer maneira, qd usas layers comerciais (google,
>>> yahoo, etc), tens que definir tb nas layers algumas
>>> restrições nomeadamente as resoluções máximas, etc...
>>>
>>> Ou seja, o facto de definires o restricted extent não vai
>>> impedir de veres o mundo inteiro. Então podes fazer como te
>>> disse, ou ainda, podes adicionar um evento ao map on zoomend
>>> e detectas qual a resolução e se for maior que aquela que tu
>>> queres permitir entao fazes um zoom ao mapa... desta forma
>>> consegues eliminar a visualização do mundo inteiro.
>>>
>>> Abc,
>>>
>>> Hugo
>>>
>>> 2011/12/13 Pedro Costa <pedrocostaarma sapo.pt
>>> <mailto:pedrocostaarma sapo.pt>>
>>>
>>> Obrigado Hugo.
>>> Eu estou a tentar que o exemplo do link abra na área que
>>> pretendo mas está dificil.
>>>
>>> http://www.pgrouting.org/docs/ol-workshop/ch05.html
>>>
>>> Por exemplo, abri o exemplo original fiz zoom na área
>>> que pretendo e com o firebug fiz map.getExtent(). Assim
>>> obtive os valores da bounding box que queria penso eu:
>>>
>>> bottom
>>> 5066053.4452291
>>> left
>>> -929102.37877511
>>> right
>>> -921458.67594797
>>> top
>>> 5070353.0280693
>>>
>>> A seguir inseri na variavel options coloquei estes
>>> valores mas mesmo assim não, abre na área que queria.
>>>
>>> Alguém tem ideia porquê?
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 13-12-2011 12:16, Pedro Costa wrote:
>>>> Pessoal podem ajudar-me no seguinte:
>>>> Tenho esta parte do código:
>>>>
>>>>
>>>> var options = {
>>>>
>>>> projection: new OpenLayers.Projection("EPSG:900913"),
>>>>
>>>> units: "m",
>>>>
>>>> numZoomLevels: 22,
>>>>
>>>> maxResolution: 156543.0339,
>>>>
>>>> maxExtent: new OpenLayers.Bounds(-20037508, -20037508,
>>>>
>>>> 20037508, 20037508.34)
>>>>
>>>> };
>>>>
>>>> retirado de:
>>>> http://www.pgrouting.org/docs/ol-workshop/ch05.html
>>>>
>>>>
>>>> Significa que o mapa vai estar na projecção 900913.
>>>> Neste exempo eu quero mudar a area a ser apresentada
>>>> por isso tenho de mudar o maxExtend certo?
>>>> A questão é se eu no geoserver definir o srs como
>>>> 900913 e calcular, tenho os valores da bounding box,e é
>>>> so substituir ou estou errado?
>>>>
>>>> Pelo que percebi:
>>>>
>>>> -20037508
>>>> (left = min X)
>>>>
>>>>
>>>> -20037508
>>>> (bottom = min y)
>>>>
>>>> 20037508
>>>>
>>>> (right = max X)
>>>>
>>>> 20037508.34
>>>>
>>>> (top = max y)
>>>>
>>>>
>>>> Estou correcto?
>>>>
>>>> obrigado
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 13-12-2011 11:11, Jorge de Jesus wrote:
>>>>>
>>>>> Oi
>>>>>
>>>>> Pelo que vejo:
>>>>>
>>>>> 1) Nao tens a proxy instalada para poderes contactar
>>>>> http://localhost:8080
>>>>>
>>>>> http://trac.osgeo.org/openlayers/wiki/FrequentlyAskedQuestions#HowdoIsetupaProxyHost
>>>>>
>>>>> Ate teres a proxy instalada o browser nao vai pedir
>>>>> nada ao servidor...
>>>>>
>>>>> 2) Tens duas vezes projection:
>>>>> projection: 'map.getProjectionObject()',
>>>>> reproject: 'True',
>>>>> projection: new OpenLayers.Projection('4326'),
>>>>>
>>>>> Geralmente JS usa o ultimo valor definido, portanto
>>>>> estas a usar projeccao 4325
>>>>>
>>>>> 3) O uso correct the OpenLayers.Projection e' com EPSG
>>>>>
>>>>> OpenLayers.Projection("EPSG:4326")
>>>>>
>>>>> All the best
>>>>>
>>>>> Jorge
>>>>>
>>>>>
>>>>> On 13/12/11 10:50, Pedro Costa wrote:
>>>>>> Acho que o problema é mesmo os wms que não são
>>>>>> reprojectados:
>>>>>> Reparem neste exemplo que fiz:
>>>>>>
>>>>>>
>>>>>> http://pastebin.com/6i9TEWsH
>>>>>>
>>>>>>
>>>>>>
>>>>>> Simplesmente não aparece o wms
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 12-12-2011 09:38, Jorge de Jesus wrote:
>>>>>>>
>>>>>>> Bons dias
>>>>>>>
>>>>>>>
>>>>>>> Bem, se tens acerteza que o wms funciona sem
>>>>>>> problemas sem o layer proprietario, o mais provavel
>>>>>>> e' que o WMS nao supporta EPSG:900913 ou gera um
>>>>>>> erro quando fazes o pedido.
>>>>>>>
>>>>>>> No firebug, ve os pedidos feitos pela pagina (Seccao
>>>>>>> Net) e ve o pedido feito ao servidor e a resposta data.
>>>>>>>
>>>>>>> Por exemplo tenho um sistema que faz o seguinte pedido:
>>>>>>>
>>>>>>> http://localhost/rasdaman/wms.py?LAYERS=rasdamanImage&FORMAT=image%2Fpng&TIME=2011-06-20&STRATEGIES=%5Bobject%20Object%5D&TRANSPARENT=TRUE&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&SRS=EPSG%3A900913&BBOX=-6300637.7833253,4684889.401321,6076045.8348875,10359574.380423&WIDTH=1265&HEIGHT=580
>>>>>>> <http://localhost/rasdaman/wms.py?LAYERS=rasdamanImage&FORMAT=image%2Fpng&TIME=2011-06-20&STRATEGIES=%5Bobject%20Object%5D&TRANSPARENT=TRUE&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&SRS=EPSG%3A900913&BBOX=-6300637.7833253,4684889.401321,6076045.8348875,10359574.380423&WIDTH=1265&HEIGHT=580>
>>>>>>>
>>>>>>> Experimenta a fazer um pedido ao teu WMS usando
>>>>>>> SRS=EPSG%3A900913
>>>>>>>
>>>>>>> Jorge
>>>>>>>
>>>>>>>
>>>>>>> On 10/12/11 15:25, Pedro Costa wrote:
>>>>>>>> Jorge,
>>>>>>>>
>>>>>>>> Sim lembro-me.Esclarece-me só a seguinte dúvida, o
>>>>>>>> que é que o browser não está a conseguir ir buscar
>>>>>>>> na tua opinião mais precisamente? É que ele vai
>>>>>>>> buscar o layer proprietário, os wms é que não. Mas
>>>>>>>> noutros exercicios que efectuei sem o layer
>>>>>>>> proprietario ele ia buscar tudo.
>>>>>>>>
>>>>>>>>
>>>>>>>> Obrigado
>>>>>>>> bom fim de semana
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On 10-12-2011 09:26, Jorge Mendes de Jesus wrote:
>>>>>>>>>
>>>>>>>>> Oi
>>>>>>>>>
>>>>>>>>> Parece tudo em ordem, mas tens um ligeiro problema :)
>>>>>>>>>
>>>>>>>>> Lembras-te da explicacao relativa a cross-domain,
>>>>>>>>> ou seja podes acecer a outros URLs partir de
>>>>>>>>> Javascript ?! Pois quando tens um url com uma
>>>>>>>>> porta diferente tens a mesma situacao, ou seja:
>>>>>>>>>
>>>>>>>>> http://localhost:8080
>>>>>>>>>
>>>>>>>>> è um URL differente e tens de usar uma proxy para
>>>>>>>>> buscar os resultados. Eu sempre pensei que mesmo
>>>>>>>>> com uma porta difererente nao haveria problemas
>>>>>>>>> mas à alguns meses algume teve o mesmo problema e
>>>>>>>>> foi tudo explicado no mailing list, acho que podes
>>>>>>>>> procurar no google pelos emails mais antigos.
>>>>>>>>>
>>>>>>>>> Alem disso, tens o WMS a funcionar a 100%?
>>>>>>>>> Experimentaste a fazer uma pedido com EPSG:900913 ??
>>>>>>>>>
>>>>>>>>> Jorge
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -----Original Message-----
>>>>>>>>> From: portugal-bounces lists.osgeo.org
>>>>>>>>> <mailto:portugal-bounces lists.osgeo.org> on
>>>>>>>>> behalf of Pedro Costa
>>>>>>>>> Sent: Fri 09/12/2011 13:47
>>>>>>>>> To: portugal lists.osgeo.org
>>>>>>>>> <mailto:portugal lists.osgeo.org>
>>>>>>>>> Subject: Re: [Portugal] duvidas sobre openlayers
>>>>>>>>>
>>>>>>>>> On 09-12-2011 09:22, Jorge de Jesus wrote:
>>>>>>>>> > No meu caso nao defino a projeccao da camada WMS
>>>>>>>>> e o OpenLayers usa a
>>>>>>>>> > projeccao da baseLayer da google para tudo, o
>>>>>>>>> meu WMS tem suporte
>>>>>>>>> > nativo para 900913. Acho que devia ter tido mais
>>>>>>>>> atencao ao codigo e
>>>>>>>>> > seria mais correcto adicionar a informacao da
>>>>>>>>> projeccao
>>>>>>>>> >
>>>>>>>>> > projection: map.getProjectionObject()
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Tentei assim:
>>>>>>>>>
>>>>>>>>> http://pastebin.com/WLkRVbxu
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Mas continuo sem sucesso, só é visivel o layer
>>>>>>>>> proprietário. Nem sequer
>>>>>>>>> aparece o "+" do layer switcher, não percebo o
>>>>>>>>> porquê...
>>>>>>>>>
>>>>>>>>> Alguma sugestão?
>>>>>>>>>
>>>>>>>>> Obrigado
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> PS: O firebug tb não detecta nenhum erro.
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>>> Hugo Martins
>>> LabNT - ISEGI UNL
>>> Campus de Campolide
>>> 1070-312 Lisboa
>>> N 38°43'56.84", W 9°9'35.74"
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>> Hugo Martins
>> LabNT - ISEGI UNL
>> Campus de Campolide
>> 1070-312 Lisboa
>> N 38°43'56.84", W 9°9'35.74"
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> LabNT - ISEGI UNL
> Campus de Campolide
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