queryByFeatures raster

[Burgholzer,Robert]

Is it possible to do a queryByFeatures on a raster?  That is, I want to
select a shape feature, then have that used as a query shape to
summarize info in my overlapping raster.

 

I am trying this:

 

   $rastermap = $amap->map->getLayerByName('depart30');

   $shapemap = $amap->map->getLayerByName('selectedsegs');

   $rastermap->queryByShape($shapemap->index);

 

But cannot seem to retrieve any data (even though the raster is
definitely overlapping).  

 

My raster layer is a geoTiff (also tried as Gif, same result), with a
manually specified world file. The images display overlapping in the map
view window.

 

Any help would be appreciated,

 

r.b.

 

Robert W. Burgholzer

Surface Water Modeler

Office of Water Supply and Planning

Virginia Department of Environmental Quality

rwburgholzer at deq.virginia.gov

804-698-4405

Open Source Modeling Tools:

http://sourceforge.net/projects/npsource/

 

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