Hello to everyone!
I've been working with some GeoServer processes using OpenLayers as client.
I've been successful in those which use WFS as input (like
gs:BufferFeatureCollection). My problem comes when I want to use processes
that need as input raster data (tiff). I know that OpenLayers is not a WCS
client, but you can send a POST request to the server to get back the
result, right?. Particularly I want to execute the
gs:RasterZontalStatistics, that needs a tiff and a WFS layer as input, and
returns some statistics (average, min, max, etc.) for the tiff inside the
geometries of the WFS Layer. This is the code I've used so far:
///*GEOPROCESS - Calculate the average/min/max values of the MDE raster
according to user drawing selection*/
function obtainElevationProcess(){
var wpsFormat= new OpenLayers.Format.WPSExecute();
var doc= wpsFormat.write({
identifier: "gs:RasterZonalStatistics",
dataInputs:[{
identifier:'data',
reference:{
mimeType:"image/tiff",
href: "http://geoserver/wcs",
method: "POST",
body: {
wcs: {
identifier:'forestry:mde200_V4',
version:"1.1.1",
domainSubset: {
boundingBox: {
projection:
'http://www.opengis.net/gml/srs/epsg.xml#3857’,
bounds: new
OpenLayers.Bounds(-200931.8344047, 4681799.186142525,32948.35238090271,
4948113.428142309)
}
},
output: {format:'image/tiff'},
}
}
}
},
{
identifier:"zones",
reference:{
mimeType:"text/xml; subtype=wfs-collection/1.0",
href: "http://geoserver/wfs",
method: 'POST',
body:{
wfs:{
version:'1.0.0',
outputFormat: "GML2",
featureNS:
"http://localhost:8080/thesis/forestry",
featureType:'forestry:Lics',
}
}
}
}],
responseForm:{
rawDataOutput:{
mimeType:"text/xml;subtype=wfs-collection/1.0",
identifier:"statistics"
}
}
});
OpenLayers.Request.POST({
url:"http://localhost:8080/geoserver/ows/",
data:doc,
headers: {
"Content-Type": "text/xml;charset=utf-8"
},
success: function(response){
alert(response.responseText);
}
});
}/
Once executed, OpenLayers returns this message (selection):
/Process execution ecacba6c-a676-46b5-9010-bd4a2bb35632 failed
Failed to retrieve value for input data
Unrecognized request type {service=WCS, Output=image/tiff,
Identifier=net.opengis.ows11.impl.CodeTypeImpl@anonymised.com (value:
forestry:mde200_V4, codeSpace: null),
DomainSubset=net.opengis.ows11.impl.BoundingBoxTypeImpl@anonymised.com
(lowerCorner: [-200931.8344047, 4681799.1861425], upperCorner:
[32948.352380903, 4948113.4281423], crs:
http://www.opengis.net/gml/srs/epsg.xml#3857, dimensions: null),
version=1.1.1}</ows:ExceptionText></ows:Exception></ows:ExceptionReport></wps:ProcessFailed></wps:Status></wps:ExecuteResponse>/
Does anyone an idea about how this can be done (if possible)? My environment
is: Geoserver 2.3.5 / OpenLayers 2.13 / localhost on Apache.
Help will be highly appreciated.
Thanks.
Constan.
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