[GRASS-user] Accuracy assessment

[Stefan Sylla]

Hi Danut,

You can import the shapefile to grass with v.in.ogr. Then u should convert the vector to a raster with v.to.rast, using the same categories as for ur image. Then you should be able to perform r.kappa.

Stefan

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-----Original Message-----
From: "Danut Mihon [via OSGeo.org]" <ml-node+s1560n4981775h73 at n6.nabble.com>
Date: Fri, 15 Jun 2012 09:49:20 
To: Stefan Sylla<stefansylla at gmx.de>
Subject: Accuracy assessment



Hi,

I want to apply the r.kappa operator in order to perform the Accuracy assessment. The problem is that I have one GeoTIFF input as the thematic map, and the referenced input is in a .shp file. Converting the .shp file to a GeoTIFF seams to be problematic. Is there any way to use the r.kappa operator with the .shp file as second input? Or maybe you have other ideas how to overcome this situation.



Thanks in advanced,
Danut

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