<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:verdana,helvetica,sans-serif;font-size:10pt;color:#000000;"><div>Dear all,<br><br>I'm having some trouble copying the values from a raster image (Dartmoor1) to a series of vector points (Contour_points - created from a contour vector map). When I try to use v.what.rast I get the following error:<br><br>v.what.rast vector=Contour_points@PERMANENT raster=dartmoor1@PERMANENT layer=1 column=level<br>More points (644858) of category 1, value set to 'NULL'<br>1 categories loaded from table<br>1 categories loaded from vector<br>0 categories from vector missing in table<br>1 duplicate categories in vector<br>1 records updated<br>0 update errors<br><br><span>I think that this is an attribute table issue. I have followed the instructions in Example B <a target="_blank"
href="http://grass.itc.it/grass62/manuals/html62_user/v.what.rast.html">http://grass.itc.it/grass62/manuals/html62_user/v.what.rast.html</a> but get the following message </span><br><br>v.to.db map=Contour_points option=cat<br>Reading features...<br>Updating database...<br>1 categories read from vector map (layer 1)<br>1 records selected from table (layer 1)<br>1 categories read from vector map exist in selection from table<br>0 records updated/inserted (layer 1)<br>Record (cat 1) already exists (not inserted)<br><br>I have also tried creating and attaching a new table but get the same result for v.what.vect. Any ideas welcome, thanks for reading!<br><br>Rebecca<br></div>
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