I made some more tests: debugging GeoExplorer (which uses OpenLayers) with Firefox debugger, I see that the following GetFeatureInfo request is sent:
http://localhost:8080/geoserver/ows?LAYERS=ENDORSE:ENDORSE_BNI&QUERY_LAYERS= ENDORSE:ENDORSE_BNI&STYLES=&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetFeatureInfo &BBOX=-7612907.636721%2C1665802.66581%2C11133120.673553%2C5931600.339756&FEA TURE_COUNT=10&HEIGHT=436&WIDTH=1916&FORMAT=image/png&INFO_FORMAT=application /vnd.ogc.gml&SRS=EPSG:900913&X=866&Y=285 The WMS answers correctly; here is the XML I get: <?xml version="1.0" encoding="UTF-8"?> <wfs:FeatureCollection xmlns="http://www.opengis.net/wfs"; xmlns:wfs="http://www.opengis.net/wfs"; xmlns:ENDORSE="http://opengeo.org/#ENDORSE"; xmlns:gml="http://www.opengis.net/gml"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.opengis.net/wfs http://localhost:8080/geoserver/schemas/wfs/1.0.0/WFS-basic.xsd";> <gml:boundedBy> <gml:null>unknown</gml:null> </gml:boundedBy> <gml:featureMember> <ENDORSE:ENDORSE_BNI fid=""> <ENDORSE:GRAY_INDEX>2295.0</ENDORSE:GRAY_INDEX> </ENDORSE:ENDORSE_BNI> </gml:featureMember> </wfs:FeatureCollection> 2295.0 is the correct value for the my lat/lon. I should be able to do the same with my code, but I just don't know how... Any advices? Thank you again! -----Original Message----- From: Diego Guidi [mailto:diegogu...@gmail.com] Sent: giovedì 5 dicembre 2013 12:24 To: Riccardo Di Stefano Cc: openlayers-users@lists.osgeo.org Subject: Re: [OpenLayers-Users] Getting values from a WMS with GeoTiff file On Thu, Dec 5, 2013 at 12:09 PM, Riccardo Di Stefano <riccardo.distef...@i-em.eu> wrote: > I have to query values of a WMS hosted by Geoserver from a GeoTiff file. You're working with a raster (i.e an image) so AFAIK there are no ways to extract information from a data source like this via a GetFeatureInfo, because ecutally there isn't information to read. You can extract information from vector data like shapefiles. Diego Guidi _______________________________________________ Users mailing list us...@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/openlayers-users
