On 04-05-15 20:36, Markus Neteler wrote:
On Mon, May 4, 2015 at 8:05 PM, Alba German <[email protected]> wrote:
Hello!
I am running a loop with several r.mapcalc. I am using GRASS 7.1. The
function stops with an error:
ERROR: Error reading null row 8 for <MASK>
I've noticed that Paulo van Breugel, had the same error but I didn't see the
solution to it.
You are referring to this email:
http://lists.osgeo.org/pipermail/grass-dev/2014-September/070584.html.
Can't recall how / if I solved this, but I haven't encountered it
recently. The difficult part of it was that it appeared to happen at
random, i.e., the same function and same data would run without problem
in one instance and end with the above-mentioned error in another instance.
Obviously it has something to do with the raster called
MASK, created with r.mask before running the loop of multiple r.mapcalc.
The code itself has no problem and is very simple and works just fine with
the same list of images, but without running r.mask first.
Hi Alba,
could you post that part of the code e.g. here
http://pastebin.com/
? It sounds like a race condition...
Markus
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