Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-03 Thread Paulo van Breugel
Thanks all for trying to help out with this and all information and suggestions, much appreciated! It is probably not related to incremental compilation issues. I had those in the past, even though I always use make clean and re-run the configuration file. So since then I regularly do a completely

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-02 Thread Glynn Clements
Paulo van Breugel wrote: > Sorry, pushed the short cut sending the email off too early.. What I wanted > to ask is, is there any way I can find out what kind of error I am getting? > Now, the only message is "Error". There are only a few possible causes of "Error reading raster data", namely an

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-02 Thread Sören Gebbert
Hi, you can set the environment variable GRASS_SIGSEGV_ON_ERROR to raise a segmentation fault signal that can be catched by gdb. Then you can make backtrace and send it to the list. I hope we will be able to help you then ... but i am not sure. I assume you use bash or equivalent: {{{ export GRAS

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-02 Thread Paulo van Breugel
Sorry, pushed the short cut sending the email off too early.. What I wanted to ask is, is there any way I can find out what kind of error I am getting? Now, the only message is "Error". On Fri, Aug 2, 2013 at 12:38 PM, Paulo van Breugel wrote: > One reason I did not think about problem to be re

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-02 Thread Paulo van Breugel
One reason I did not think about problem to be related to hard drive issues is that I would expect other GRASS functions to fail, at least occasionally, as well as other programs. On Fri, Aug 2, 2013 at 4:32 AM, Glynn Clements wrote: > > Paulo van Breugel wrote: > > > I am really puzzled as to

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-02 Thread Paulo van Breugel
On 08/02/2013 09:16 AM, Markus Neteler wrote: On Fri, Aug 2, 2013 at 4:32 AM, Glynn Clements wrote: Paulo van Breugel wrote: I am really puzzled as to what is going on here. Any idea what I am doing wrong here or what could be the cause? My first suspicion would be hardware issues, e.g. a f

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-02 Thread Markus Neteler
On Fri, Aug 2, 2013 at 4:32 AM, Glynn Clements wrote: > > Paulo van Breugel wrote: > >> I am really puzzled as to what is going on here. Any idea what I am doing >> wrong here or what could be the cause? > > My first suspicion would be hardware issues, e.g. a failing disk > drive. Please post you

Re: [GRASS-dev] seemingly random errors in r.mapcalc

2013-08-01 Thread Glynn Clements
Paulo van Breugel wrote: > I am really puzzled as to what is going on here. Any idea what I am doing > wrong here or what could be the cause? My first suspicion would be hardware issues, e.g. a failing disk drive. While there are certain types of programming error which can cause non-determinis

[GRASS-dev] seemingly random errors in r.mapcalc

2013-08-01 Thread Paulo van Breugel
Hi, In the last few revisions of GRASS GIS 7.0 (on Ubuntu 13.04) I am experiencing this seemingly random errors with r.mapcalc. For example: Running the following r.mapcalc computation gave me an ERROR: GRASS 7.0.svn (AEA):~ > r.mapcalc --overwrite "glc_influence = if(IIASA_crops==100,8.0, if((g