[GRASS-dev] r3.mapcalc neighborhood modifier error

[Vaclav Petras]

Hi Sören,

thanks for looking at it. The ticket is:

 https://trac.osgeo.org/grass/ticket/2074

It's may be obvious but in GRASS 6 it's working. I'm not sure about the
result. Since the random map maybe not the best map to visualize in nviz.
By the way,

r3.mapcalc "test_map = rand(0, 500)"

is much faster in GRASS 6.

Vaclav



On Tue, Sep 10, 2013 at 3:12 AM, Sören Gebbert <soerengebbert at googlemail.com
> wrote:

> Hi Vaclav,
> thanks for the error report. Your r3.mapcalc expression is correct.
> I must have introduced this error recently. I hope i have time at the
> FOSS4G or in October to have a look at this error.
>
> Can you please create a ticket and an example to reproduce this error?
>
> Best regards
> Soeren
>
> 2013/9/10 Vaclav Petras <wenzeslaus at gmail.com>:
> > Hi,
> >
> > I'm trying to use the neighborhood modifier [1] in r3.mapcalc in GRASS7.
> >
> > My command is something like this:
> >
> > r3.mapcac "newmap = (mapname[0, 0, 0] + mapname[1, 1, 0]) / 2"
> >
> > But I'm getting the following errors:
> >
> > ERROR: Rast3d_cache_hash_load_name: name already in hashtable
> > (cachehash.c: 98)
> >
> > ERROR: Rast3d_get_double_region: error in Rast3d_get_tile_ptr.Region
> > coordinates x 528 y 1 z 0  tile index 24 offset 22
> > (getvalue.c: 185)
> >
> > Not sure which when, it seems to be random, so far.
> >
> > Since this is not much documented in manual, I'm wondering if I'm using
> it
> > correctly, if yes, I'll turn this into a ticket.
> >
> > Thanks,
> > Vaclav
> >
> > [1] http://grass.osgeo.org/grass70/manuals/r3.mapcalc.html
> > [2] http://grass.osgeo.org/programming7/getvalue_8c_source.html#l00165
> > [3] http://grass.osgeo.org/programming7/cachehash_8c_source.html#l00092
>
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