<div dir="ltr"><a href="http://pastebin.com/rMgRsqDp" target="_blank">http://pastebin.com/rMgRsqDp</a></div><div class="gmail_extra"><br><div class="gmail_quote">2015-05-04 15:36 GMT-03:00 Markus Neteler <span dir="ltr"><<a href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Mon, May 4, 2015 at 8:05 PM, Alba German <<a href="mailto:albagerman@gmail.com">albagerman@gmail.com</a>> wrote:<br>
> Hello!<br>
> I am running a loop with several r.mapcalc. I am using GRASS 7.1. The<br>
> function stops with an error:<br>
><br>
> ERROR: Error reading null row 8 for <MASK><br>
><br>
> I've noticed that Paulo van Breugel, had the same error but I didn't see the<br>
> solution to it. Obviously it has something to do with the raster called<br>
> MASK, created with r.mask before running the loop of multiple r.mapcalc.<br>
> The code itself has no problem and is very simple and works just fine with<br>
> the same list of images, but without running r.mask first.<br>
<br>
</div></div>Hi Alba,<br>
<br>
could you post that part of the code e.g. here<br>
<a href="http://pastebin.com/" target="_blank">http://pastebin.com/</a><br>
<br>
? It sounds like a race condition...<br>
<span class="HOEnZb"><font color="#888888"><br>
Markus<br>
</font></span></blockquote></div><br></div>