[Portugal] duvidas sobre openlayers
Pedro Costa
pedrocostaarma sapo.pt
Terça-Feira, 13 de Dezembro de 2011 - 10:47:04 EST
Resolvido finalmente...Tive de mudar nessa parte e acertar com a ordem.
PS:Só é pena ter demorado tanto para uma coisa tão simples lol!
On 13-12-2011 15:34, Hugo wrote:
> Se calhar o teu problema são as coordenadas que estás a passar para o
> OpenaLayers.Bounds.
> Confirma que tens as coordenadas certas (por exemplo através do QGis
> ou do PostGIS)
>
> Abc,
> Hugo
>
> 2011/12/13 Pedro Costa <pedrocostaarma sapo.pt
> <mailto:pedrocostaarma sapo.pt>>
>
>
>
> Bem agora começa a fazer sentido, tenho de mudar nesta parte:
>
> // set default position
> map.zoomToExtent(new
> OpenLayers.Bounds(5062994.9488977,
>
> -932033.61453498,
>
> -916746.20888068,
>
> 5071594.1145783));
>
>
> Aqui já muda para uma área 'com alguma coisa'...
>
>
>
>
>
>
>
>
>
>
> On 13-12-2011 15:20, Pedro Costa wrote:
>>
>> HUgo nesta parte do código:
>>
>> // set default position
>> map.zoomToExtent(new OpenLayers.Bounds(880000,
>> 6840000,
>> 915000,
>> 6860000));
>>
>> Também tenho de inserir os valores respectivos certo?
>>
>>
>>
>>
>>
>>
>>
>>
>> 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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>>>>>>>>>>>
>>>>>>>>>>>
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>>>>>
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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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>>>> _______________________________________________
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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 list
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>>>
>>>
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>>>
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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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>>
>
>
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>
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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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> Portugal mailing list
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