Hi,
I am publishing a raster data using the GeoTiff data store. Is there a way to
customise the JSON response of WMS GetFeatureInfo request? INFO_FORMAT
parameter must be application/json.
For instance, the request to:
https://geoserver.tern.org.au/geoserver/abares1/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetFeatureInfo&FORMAT=image%2Fjpeg&TRANSPARENT=true&QUERY_LAYERS=abares1%3Aclum_50m_2018&LAYERS=abares1%3Aclum_50m_2018&exceptions=application%2Fvnd.ogc.se_inimage&INFO_FORMAT=application%2Fjson&FEATURE_COUNT=50&X=50&Y=50&SRS=EPSG%3A3577&STYLES=&WIDTH=101&HEIGHT=101&BBOX=-630357.6613501705%2C-3347248.0467043915%2C356714.02541521227%2C-2360176.3599390085
returns:
{"type":"FeatureCollection","features":[{"type":"Feature","id":"","geometry":null,"properties":{"GRAY_INDEX":125}}],"totalFeatures":"unknown","numberReturned":1,"timeStamp":"2019-07-04T05:20:10.711Z","crs":null}
I need to add more fields to the feature[0].properties object. The values need
to come from a map function f(x) where x is the pixel value (GRAY_INDEX in this
case). For instance:
"properties":{"GRAY_INDEX":125, "primary":"water", "classes":"17"}
Similar question was asked on stackexchange in 2016:
https://gis.stackexchange.com/questions/210834/how-do-i-get-raster-attribute-labels-from-a-wms-getfeatureinfo-request
Has there been any new features that can tackle this issue since then?
If it is not possible via an easy way, is there a workaround to do that either
using a different (raster) data store or scripting plugins or something else
that does not involve recompiling and repackaging the whole geoserver app?
Regards,
Alvin
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