[OpenLayers-Dev] Problems with WMS.Post + singleTile + sld_body
Carlos Lacerda
carlos.lacerda at gmail.com
Wed Apr 20 15:23:19 EDT 2011
Thanks Andreas,
Create a Ticket #3267.
Using the workaround "gutter: 15" not solve the problem but improved.
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
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