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Hi,

I'm trying to extract values files with the average values of several variables for 
each UTM 10x10-km square of Spain. 
But for some strange reason, the values files come out incomplete: some of the 
polygons, all of them pretty small, do 
not appear in the values files, although they have an IdrID. There are gaps in the 
first column of the values file. The 
"ignored" polygons are always the same, whichever variable I try to extract. At first 
I thought this could be because 
they're too small or something, but there are other polygons as small as these (or 
even smaller than some of these) for 
which EXTRACT does come out with a value. Does anyone know why this happens and how I 
it can be fixed?

Thank you very much in advance,
M�rcia Barbosa.


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