[OpenLayers-Dev] Problems with WMS.Post + singleTile + sld_body
Andreas Hocevar
ahocevar at opengeo.org
Fri Apr 29 05:16:43 EDT 2011
On Wed, Apr 20, 2011 at 9:23 PM, Carlos Lacerda
<carlos.lacerda at gmail.com> wrote:
> Thanks Andreas,
>
> Create a Ticket #3267.
> Using the workaround "gutter: 15" not solve the problem but improved.
Just so you know: depending on the size of your symbols, you can also
set a bigger gutter (e.g. "gutter: 20"). Play with it a bit.
Andreas.
>
> Thanks a lot.
>
>
> On Wed, Apr 20, 2011 at 10:58 AM, Andreas Hocevar <ahocevar at opengeo.org> wrote:
>> I suspect this is an issue because we use a transitionEffect by default now, which does not work for IFrame tiles. Can you please create a ticket on http://trac.osgeo.org/openlayers ?
>>
>> A workaround in the meantime would be to use tiled layers and configure them with a gutter (e.g. "gutter: 15" instead of "singleTile: true").
>>
>> Andreas.
>>
>> On Apr 20, 2011, at 15:42 , Carlos Lacerda wrote:
>>
>>> Hi Andreas,
>>>
>>> Thanks for your reply.
>>>
>>> I repeat my test using openlayers of trunk, the parameter tileOptions:
>>> {maxGetUrlLength: 2048} run´s perfect but the problem of old images
>>> using singleTile:true persist :-(
>>>
>>> All runs fine the only problem is the singleTile:true, with
>>> singleTile:false layer refresh Ok when change parameter to true old
>>> images persist on the map.
>>> Has a parameter or one point to try solve this problem ??
>>>
>>> I see now that this problem only occurs when i use sld_body parameter,
>>> in example:
>>>
>>> trafo = new OpenLayers.Layer.WMS("Transformadores", wmsServer,{
>>> layers: 'axx:TRAFO_PERDAS',
>>> styles: '',
>>> format: 'image/png',
>>> transparent: true,
>>> sld_body:sldTrafo.getSLD()
>>> }, {
>>> 'opacity': 1,
>>> 'isBaseLayer': false,singleTile:true,
>>> tileOptions: {maxGetUrlLength: 2048}
>>> });
>>> trafo2 = new OpenLayers.Layer.WMS("Transformadores2", wmsServer,{
>>> layers: 'axx:TRAFO_PERDAS',
>>> styles: '',
>>> format: 'image/png',
>>> transparent: true
>>> //sld_body:sldTrafo.getSLD()
>>> }, {
>>> 'opacity': 1,
>>> 'isBaseLayer': false,singleTile:true,
>>> tileOptions: {maxGetUrlLength: 2048}
>>> });
>>>
>>> Is the same layer, one using sld_body and another not. The second
>>> layer without sld_body run´s fine, refresh is OK and old images not
>>> occurs, the first layer using sld_body with singleTile:false runs fine
>>> but in my case i have the know problem of "TextSymbolizer label near
>>> tile edges" and its necessary use singleTile:true, with singlTile:true
>>> problem with old images appear.
>>>
>>> I attach a image of this two layers, the small elements is the first
>>> layer using sld_body with the old images problem, the greater images
>>> is from first layer too, in
>>> SLD maxScaleDenominator define the size of image, the greater images
>>> is correct but small elements is old from previous zoom. If i disable
>>> the first layer only the greater images is diplayed using SLD from
>>> server in second layer. SLD is the same in this case only one send by
>>> OpenLayers and another in the server.
>>>
>>> In my case its necessary dynamic SLDs and OpenLayers its like a glove
>>> to this, singleTile is the only problem for me now :-(
>>>
>>> All sugestions are appreciated.
>>>
>>> Thanks a lot.
>>> Carlos
>>>
>>> On Wed, Apr 20, 2011 at 4:50 AM, Andreas Hocevar <ahocevar at opengeo.org> wrote:
>>>> Note that the tileOptions: {maxGetUrlLength: 2048} configuration option was added *after* the last release. So can you please try out the latest trunk version of OpenLayers and see what results you get with that?
>>>>
>>>> Andreas.
>>>>
>>>> On Apr 19, 2011, at 15:22 , Carlos Lacerda wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> I´m user OpenLayers with Geoserver in my projects to render eletrical networks.
>>>>> It´s fine for my purposes, but now a found a problem to use singleTile
>>>>> with dynamical SLD´s
>>>>>
>>>>> Explaining....
>>>>>
>>>>> Initially use WMS.Post to create a layer and send a dynamic SLD using
>>>>> sld_body parameter
>>>>>
>>>>> var trafo = new OpenLayers.Layer.WMS.Post("Transformadores", wmsServer,{
>>>>> layers: 'axx:TRAFO_PERDAS',
>>>>> cql_filter:"mes_ref='201102'";
>>>>> styles: '',
>>>>> srs: 'EPSG:4326',
>>>>> format: 'image/png',
>>>>> transparent: true,
>>>>> sld_body: sldTrafo.getSLD(),//JS with SLD, its a large SLD
>>>>> }, {
>>>>> 'opacity': 1,
>>>>> 'isBaseLayer': false,
>>>>> 'wrapDateLine': false,
>>>>> buffer: 0,
>>>>> //singleTile:true
>>>>> });
>>>>> This layer works fine but have the know problem of TextSymbolizer
>>>>> label near tile edges.
>>>>>
>>>>> All right, i add parameter 'singleTile:true' to solve the problem and
>>>>> the same solve the problem but have a issue, when zoom or pan the map
>>>>> the old image is not distroyed, when pan or zoom new image is created
>>>>> correct but old image before created not disapears creating impression
>>>>> of a overlay in map, an example if a have an area with five elements
>>>>> when zoom this area the five elements is duplicated to ten elements,
>>>>> if my SLD chage simbols depending of a scale for example the old
>>>>> images are displayed like a overlay.
>>>>> It´s necessary some parameter to solve this problem ?
>>>>>
>>>>> I´m using IE8.
>>>>>
>>>>> Reading documentation about WMS.POST deprecated, i try use Layer.WMS
>>>>> using tileOptions: {maxGetUrlLength: 2048} without success, using
>>>>> this method only small SLDs runs.
>>>>> How should i use this parameter ??
>>>>>
>>>>> When use large SLD with this parameter the folowing error is throw by IE:
>>>>>
>>>>> Message: Invalid Pointer
>>>>>
>>>>> Line 156
>>>>> Character: 49
>>>>> Code: 0
>>>>> URI: http://openlayers.org/api/OpenLayers.js
>>>>>
>>>>>
>>>>>
>>>>> Thanks a lot for any help.
>>>>>
>>>>> --
>>>>> Sds,
>>>>> Carlos Lacerda
>>>>> System Architect - CIAS
>>>>> Brasil
>>>>> _______________________________________________
>>>>> Dev mailing list
>>>>> Dev at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/openlayers-dev
>>>>
>>>>
>>>>
>>>> --
>>>> Andreas Hocevar
>>>> OpenGeo - http://opengeo.org/
>>>> Expert service straight from the developers.
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Sds,
>>> Carlos Lacerda
>>> System Architect - CIAS
>>> Brasil
>>> <small.png>_______________________________________________
>>> Dev mailing list
>>> Dev at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/openlayers-dev
>>
>> --
>> Andreas Hocevar
>> OpenGeo - http://opengeo.org/
>> Expert service straight from the developers.
>>
>>
>
>
>
> --
> Sds,
> Carlos Lacerda
> System Architect - CIAS
> Brasil
> _______________________________________________
> Dev mailing list
> Dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/openlayers-dev
>
--
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.
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