Hi,
I may not provide more insight than given below (provided information
whatever is known to me)., but i hope you will get clarity how to implement
dynamic sld for gis layers for multi lingual webgis applications.
We can assign more than one styles to a GIS layer (but default SLD will be
selected during geoserver layers configuration..for ex:- polygon for polygon
layers, line for road layers, or point for point features). You may write
need to write code in the program similar to given below.
Note: even though default SLD is configured in Geoserver, required sld to be
applied should be present in geoserver. naming of such sld like given below
will not confuse developers while coding.
The slds respective to each layer as follows.
*layer*
*sld*
* *
*English*
*Hindi
*
gis:gis_sea
gis_sea
gis:gis_country
gis_country
gis:gis_footprint
gis_footprint
gis:gis_buildings
gis_buildings
gis:gis_city
gis_city_en
gis_city_hnd
gis:gis_district
gis_district_en
gis_district_hnd
gis:gis_towns
gis_towns_en
gis_towns_hnd
gis:gis_roads
gis_roads_en
gis_roads_hnd
if require, pass specific sld's as in order to apply dynamic styles to the
respective layer locale selected.
Eq 1 :
....
....
map = new OpenLayers.Map ("map",options);
var layers ='gis:gis_ind,'+
'gis_footprint,'+
'gms_landmarks,'+
'gis:gis_towns,'+
'gis:gis_roads,'+
'gms:gms_point_of_interest';
var slds ='gis_ind,' +
'gis_footprint,'+
'gms_landmarks,'+
'gis_towns_'+ locale +','+
'gis_roads_'+ locale +','+
'gms_POI_'+ locale;
var layer = new OpenLayers.Layer.WMS( "ind WMS", wmsUrl,{
layers: layers,
styles: slds,
srs: 'EPSG:4326',format: 'image/png'},{'attribution': '© 2009
Mapview'},{buffer: 0});
map.addLayer( layer );
Eq 2 :
....
....
map = new OpenLayers.Map ("map",options);
var layer1 = new OpenLayers.Layer.WMS( "Layer1", wmsUrl,{
layers: 'gis:gis_ind',
styles: 'gis_ind',
srs: 'EPSG:4326',format: 'image/png'},{'attribution': '© 2009
Mapview'},{buffer: 0});
var layer2 = new OpenLayers.Layer.WMS( "Layer2", wmsUrl,{
layers: 'gis:gis_towns',
styles: 'gis_towns_'+ locale,
srs: 'EPSG:4326',format: 'image/png'},{'attribution': '© 2009
Mapview'},{buffer: 0});
map.addLayers( [layer1, layer2] );
In this example, the locale javascript object gets the respective language
as 'en' or 'ar' and applies language specific style to the layer.
@ Hari
On Wed, May 11, 2011 at 2:13 PM, Jon-Paul Dobson <[email protected]>wrote:
> Hi,
>
> Is there anyway to change layer styles on-the-fly other than to alter the
> .SLD xml file? In our application I want to allow users to have the ability
> to set personal layer styles e.g. colour, symbol etc.Is this possible at
> all?
>
> If the only way to change styles is to alter the .SLD file, then this means
> that layer styles must be set at the global level and personal preferences
> per user would not be possible.
>
> Regards,
> Jon-Paul.
>
>
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