Re: [GRASS-user] result from g.copy when layer exists
Nick wrote: Since we're talking about grass errors, is there a way to redirect the warnings/errors ? e.g. r.mapcalc ... 2error.log Hamish: see the GIS_ERROR_LOG file and/or environment variable. http://grass.osgeo.org/grass64/manuals/variables.html#enviro simply touch ~/GIS_ERROR_LOG and it will start keeping a log of all warnings and errors. I am slightly suspicious that some recent changes may have broken that, but give it a try. Don't forget to remove it! I have a GIS_ERROR_LOG file, 186.6MiB dated back in 09. 04. 2009 :D. It's nice to have some reference that/on what I was messing around with GRASS-GIS back then... Nikos ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] result from g.copy when layer exists
Since we're talking about grass errors, is there a way to redirect the warnings/errors ? e.g. r.mapcalc ... 2error.log On Fri, Jul 19, 2013 at 10:14 AM, Markus Metz markus.metz.gisw...@gmail.com wrote: On Thu, Jul 18, 2013 at 1:57 PM, Rainer M Krug rai...@krugs.de wrote: Nikos Alexandris n...@nikosalexandris.net writes: Rainer MK wrote: I am a bit irritated, ut maybe I don't dee the reasoning behind this:' , | RASS 7.0.svn (grass):~ g.copy rast=MASK,tmp | WARNING: tmp already exists | [Raster MASK present] | GRASS 7.0.svn (grass):~ ` If the layer already exists, shouldn't the command give actually an error and not only a warning? A warning implies for me that the command worked, but maybe something unexpected could have happened (or happened) - but this one clearly did not work, as the layer has not been copied? Glynn Clements: In GRASS, errors are fatal; the program will be terminated as soon as the error message has been printed. Rainer MK: Exactly - if e.g. in r.mapcalc an invalid expression is entered, r.mapcalc issues the error message and quits. Each of g.copy's options accept an arbitray number of source+destination pairs, and the various options aren't mutually exclusive (e.g. a single invocation can copy both raster and vector maps). True. If it can't perform a particular copy for any reason, it generates a warning then moves on to the next item. True - but this does not answer my question. But I looked at cp in bash, and it behaves in the same way. So I think I have to live with this. Just sharing my thoughts about: Imagine copying 1000 maps. And one is meant to fail, say the 1st one of them. You wouldn't, probably, like the copy process to be interrupted just for one map that failed. Right? Depends: when using in a script, I would like it to fail, as the following commands might give wrong resuls as they would be based on the previous map and not the copied one. Also, in a script this could mean that previous commands did not clean their temporary files properly - other cause for an interruption of the script. When doing it from the command prompt, I would say: just tell me which ones failed - correct. SO the best would be a flag which says error on map exists. The other way around: you can enforce copying (overwrite existing maps) with g.copy --o Markus M ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] result from g.copy when layer exists
Nick wrote: Since we're talking about grass errors, is there a way to redirect the warnings/errors ? e.g. r.mapcalc ... 2error.log see the GIS_ERROR_LOG file and/or environment variable. http://grass.osgeo.org/grass64/manuals/variables.html#enviro simply touch ~/GIS_ERROR_LOG and it will start keeping a log of all warnings and errors. I am slightly suspicious that some recent changes may have broken that, but give it a try. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] result from g.copy when layer exists
Glynn Clements gl...@gclements.plus.com writes: Rainer M Krug wrote: I am a bit irritated, ut maybe I don't dee the reasoning behind this:' , | RASS 7.0.svn (grass):~ g.copy rast=MASK,tmp | WARNING: tmp already exists | [Raster MASK present] | GRASS 7.0.svn (grass):~ ` If the layer already exists, shouldn't the command give actually an error and not only a warning? A warning implies for me that the command worked, but maybe something unexpected could have happened (or happened) - but this one clearly did not work, as the layer has not been copied? In GRASS, errors are fatal; the program will be terminated as soon as the error message has been printed. Exactly - if e.g. in r.mapcalc an invalid expression is entered, r.mapcalc issues the error message and quits. Each of g.copy's options accept an arbitray number of source+destination pairs, and the various options aren't mutually exclusive (e.g. a single invocation can copy both raster and vector maps). True. If it can't perform a particular copy for any reason, it generates a warning then moves on to the next item. True - but this does not answer my question. But I looked at cp in bash, and it behaves in the same way. So I think I have to live with this. Thanks, Rainer -- Rainer M. Krug email: RMKrugatgmaildotcom ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] result from g.copy when layer exists
Rainer MK wrote: I am a bit irritated, ut maybe I don't dee the reasoning behind this:' , | RASS 7.0.svn (grass):~ g.copy rast=MASK,tmp | WARNING: tmp already exists | [Raster MASK present] | GRASS 7.0.svn (grass):~ ` If the layer already exists, shouldn't the command give actually an error and not only a warning? A warning implies for me that the command worked, but maybe something unexpected could have happened (or happened) - but this one clearly did not work, as the layer has not been copied? Glynn Clements: In GRASS, errors are fatal; the program will be terminated as soon as the error message has been printed. Rainer MK: Exactly - if e.g. in r.mapcalc an invalid expression is entered, r.mapcalc issues the error message and quits. Each of g.copy's options accept an arbitray number of source+destination pairs, and the various options aren't mutually exclusive (e.g. a single invocation can copy both raster and vector maps). True. If it can't perform a particular copy for any reason, it generates a warning then moves on to the next item. True - but this does not answer my question. But I looked at cp in bash, and it behaves in the same way. So I think I have to live with this. Just sharing my thoughts about: Imagine copying 1000 maps. And one is meant to fail, say the 1st one of them. You wouldn't, probably, like the copy process to be interrupted just for one map that failed. Right? Greets, Nikos ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] result from g.copy when layer exists
Hi I am a bit irritated, ut maybe I don't dee the reasoning behind this:' , | RASS 7.0.svn (grass):~ g.copy rast=MASK,tmp | WARNING: tmp already exists | [Raster MASK present] | GRASS 7.0.svn (grass):~ ` If the layer already exists, shouldn't the command give actually an error and not only a warning? A warning implies for me that the command worked, but maybe something unexpected could have happened (or happened) - but this one clearly did not work, as the layer has not been copied? Cheers, Rainer -- Rainer M. Krug email: RMKrugatgmaildotcom ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
