[Portugal] duvidas sobre openlayers
Hugo
hfpmartins gmail.com
Terça-Feira, 13 de Dezembro de 2011 - 10:01:14 EST
Olá Pedro,
tens que fazer um map.setCenter();
Abc,
Hugo
2011/12/13 Pedro Costa <pedrocostaarma at 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 at 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 at 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
>>>
>>> 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 at lists.osgeo.org on behalf of Pedro Costa
>>> Sent: Fri 09/12/2011 13:47
>>> To: portugal at 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"
>
>
> _______________________________________________
> Portugal mailing listPortugal at lists.osgeo.orghttp://lists.osgeo.org/mailman/listinfo/portugal
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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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