[GRASS-user] v.isochrones : error message

[Markus Neteler]

On Wed, Jul 29, 2015 at 3:03 PM, image93 <lcelati at cci-paris-idf.fr> wrote:
> Dear friends,
>
> I 'm working with grass 7 on windows 7 32 bits. I loaded into grass OSM data
> for driving isochrone. I selected only usefull roads : primary, secondary,
> etc. And moreover, i create a max speed field thanks to the type of the
> road.
>
> I succed in loading start point and raod network OSm into grass.
>
> But when i run the v.isochrones with r.cost method, grass crashes and the
> following error message appears :
> -----------------------------------------------------------------------------------------------------------
> (Wed Jul 29 14:53:03 2015)
> v.isochrones --overwrite map=bd_road_idf at data_set_isochronie_SSD
> roads_layer=1 cost_column=speed_prof
> start_points=Centroides_polarit_s_93_true at data_set_isochronie_SSD
> isochrones=output_ROAD_isochrone time_steps=5 timemap=raster memory=1000
> method=r.cost
> Pass 1 of 48534:
...
> grass.exceptions.CalledModuleError: Module run None
> ['v.to.rast', 'use=attr',
> 'input=bd_road_idf at data_set_isochronie_SSD', 'attrcolumn=1.0
> / (speed_prof * 1000 / 60)', 'memory=1000',
> 'output=cost_map_tmp_4332', 'type=line'] ended with error
> Process ended with non-zero return code -1073741571.

This return code is a bit "funny".

Can you post the output of
g.region -p
?

Markus