[GRASS-dev] Error reading null row 8 for <MASK>

[Alba German]

Hi all!

Here is the output of the file I use for masking. It was a vector
transformed to raster, and I use each pixel with different value as a mask.
I need the value per pixel to perform the r.mapcalc.

GRASS 7.1.svn (latlong):~ > r.info puntosmonitoreo
 +----------------------------------------------------------------------------+
 | Map:      puntosmonitoreo                Date: Fri Apr 24 11:19:16
2015    |
 | Mapset:   sinnubes                       Login of Creator:
curso           |
 | Location:
latlong                                                          |
 | DataBase:
/home/curso/Documents/Alba/grassdata                             |
 | Title:    Rasterized vector map from categories ( puntosmonitoreo
)        |
 | Timestamp:
none                                                            |
 |----------------------------------------------------------------------------|
 |
|
 |   Type of Map:  raster               Number of Categories:
8               |
 |   Data Type:
CELL                                                       |
 |   Rows:
9                                                          |
 |   Columns:
7                                                          |
 |   Total Cells:
63                                                         |
 |        Projection:
Latitude-Longitude                                      |
 |            N: 31:19:09.116896S    S: 31:25:06.296602S   Res:
0:00:39.68663 |
 |            E: 64:25:54.318193W    W: 64:30:13.738769W   Res:
0:00:37.06008 |
 |   Range of data:    min = 1  max =
8                                       |
 |
|
 |   Data
Source:                                                             |
 |    Vector Map:
puntosmonitoreo                                             |
 |    Original scale from vector map:
1:1                                     |
 |
|
 |   Data
Description:                                                        |
 |    generated by
v.to.rast                                                  |
 |
|
 |
Comments:                                                                |
 |    v.to.rast input="puntosmonitoreo" layer="1" type="point,line,area"
o\   |
 |    utput="puntosmonitoreo" use="cat" value=1
memory=300                    |
 |
|
 +----------------------------------------------------------------------------+


I am using Linux (Ubuntu 14.04LTS).

And yes, it stop at random images, but is stopping always.

Thank you all.

Alba

2015-05-06 4:20 GMT-03:00 Paulo van Breugel <p.vanbreugel at gmail.com>:

>
>
> On 04-05-15 20:36, Markus Neteler wrote:
>
>> On Mon, May 4, 2015 at 8:05 PM, Alba German <albagerman at gmail.com> 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
>> _______________________________________________
>> grass-dev mailing list
>> grass-dev at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/grass-dev
>>
>
>
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