[GRASS-dev] g.region zoom?

[Paulo van Breugel]

On Mon, May 11, 2015 at 11:48 PM, Anna Petrášová <kratochanna at gmail.com>
wrote:

>
>
> On Mon, May 11, 2015 at 5:01 PM, Paulo van Breugel <p.vanbreugel at gmail.com
> > wrote:
>
>>
>>
>> On Mon, May 11, 2015 at 5:58 PM, Anna Petrášová <kratochanna at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I just realized how g.region zoom actually works and I am wondering if
>>> it is supposed to be obvious. I always thought it will set the region to
>>> the raster map minimum bounding box, but it takes current region and only
>>> shrinks it. The behavior is written in the manual (I eventually realized),
>>> but it doesn't strike me as particularly useful.
>>>
>>
>> What for example if you want to restrict calculations to the region
>> defined by the non-null values of a particular map that has a different
>> resolution than the maps you are using in your calculations?
>>
>
> I am not concerned with resolution but extent. I was mostly confused from
> the case when I have region smaller than the extent of the raster (from
> previous computation) and then I expected g.region zoom  to set the region
> on the whole raster extent, but instead it shrinks even more if there are
> nulls or it stays the same. So the result of the g.region zoom depends on
> you previous region settings which was unexpected for me.
>

Ah, never got that situation, but that would be unexpected to me too.

>
>>
>>> At least I would suggest to change the g.region zoom behavior in the GUI
>>> -> right click on layer -> Set computational region from selected map
>>> (ignore NULLS) to:
>>>
>>> g.region raster=map zoom=map
>>>
>>
>> That does indeed seems the more obvious / intuitive behaviour to me
>>
>>>
>>>
> I will do that, thanks!
>
>
>> instead of
>>>
>>> g.region zoom=map
>>>
>>> Any thoughts on that?
>>>
>>> Thanks,
>>>
>>> Anna
>>>
>>>
>>> _______________________________________________
>>> grass-dev mailing list
>>> grass-dev at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/grass-dev
>>>
>>
>>
>
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