[GRASS-dev] what is the meaning of: "Error reading raster data for row 239 of <MASK>"

Nikos Alexandris nik at nikosalexandris.net
Thu Jul 2 12:58:45 PDT 2015

* Moritz Lennert <mlennert at club.worldonline.be> [2015-07-02 17:18:49 +0200]:

> Hello,
> When I run a script that loops over a long series of point data sets and 
> then does a series of raster calculations based on these data sets, I 
> sometimes get the following error:
> ERROR: Error reading raster data for row 239 of <MASK>
> Can someone explain what this means and how to debug this ?

I am too interested in this question.  I've seen this in my script for
landsat8 to land surface temperature when instructing very large amount
of neighbor-modifiers for r.mapcalc.

Some attempts fail with such/similar error. Re-running the same command
works fine most of the times. All this in a machine with plenty of


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