Hi I am trying to generate heatmap using Geoserver Transformation SLD
(http://docs.geoserver.org/stable/en/user/styling/sld-extensions/rendering-transform.html#heatmap-generation)
. as mentioned on the page, It requires few parameters:
- data
- weightAttr
- radiusPixels
- pixelsPerCell
- outputBBOX
- outputWidth and
- outputHeight
I am able to use it by specifying these parameters directly in SLD as
default parameters. But i am not able to pass it as OpenLayers request.
There is my code:
var layer = new OpenLayers.Layer.WMS("Heat Map",
"http://port/geoserver/wms";,
{
layers: 'work:cbsa_pop',
format: "image/png",
transparent: "true",
styles:'heatmap',
maxExtent: new OpenLayers.Bounds(-124.269,32.545,-114.354,41.956),
projection: new OpenLayers.Projection("EPSG:4326"),
data:'data_attr',
weightAttr:'w_attr',
radiusPixels:100,
pixelsPerCell:100,
BBOX:new OpenLayers.Bounds(-124.269,32.545,-114.354,41.956),
outputWidth:1000,
outputHeight:1000
});
This way it is not accepting any of the parameter. I am not sure what I am
doing wrong. Any guidance will be helpful.
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