[GRASS-dev] casting row buffer in memory

Pietro peter.zamb at gmail.com
Wed Oct 8 05:23:40 PDT 2014

On Wed, Oct 8, 2014 at 11:24 AM, Glynn Clements
<glynn at gclements.plus.com> wrote:
> Pietro wrote:
>> So even if I'm explicitly casting the result in the scaler function
>> with dtype(...), the result is not properly casted, do you have an
>> idea on how could I solve this problem?
> This is a bug in pygrass:
>         $ r.info -g foo | fgrep datatype
>         datatype=CELL
>         $ python
>         Python 2.7.7 (default, Sep 26 2014, 00:18:15)
>         [GCC 4.6.3] on linux2
>         Type "help", "copyright", "credits" or "license" for more information.
>         > from grass.pygrass.raster import RasterRow
>         > out = RasterRow('foo', mode='w', mtype='DCELL', overwrite=True)
>         > out.mtype
>         u'CELL'
> If a map with the chosen name already exists, its type is used in
> place of the one specified.

Thank you to find out this bug, I didn't noticed it.

> Looking at the code for grass.pygrass.raster.RasterRow.open(), the
> overall structure is rather flawed. It primarily considers whether the
> map already exists, then secondarily considers the mode (r/w).
> It should be the other way around.

Right. Thank you for your code review!
I will try to fix this on the next days.

All the best.


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