On 01/03/12 20:02, Benjamin Ducke wrote:
I believe we are thinking in different directions here.
My idea was not about _least_ cost paths, but about
replacing straight-line distance measurements with
cost-based distances -- for more realism when modelling
physical processes.
Yes, but how to def
>
> No, this is because the i-th feature does not need to have category i,
> it can have any category and multiple categories. Selecting all
> attributes at once for all categories is also not memory-safe for
> larger vectors.
>
Hmm, let's say we take the smallest and largest category values
in
I believe we are thinking in different directions here.
My idea was not about _least_ cost paths, but about
replacing straight-line distance measurements with
cost-based distances -- for more realism when modelling
physical processes. Just like you'd use a geodetic
distance instead of eculidean in
Benjamin Ducke wrote:
> I have been pondering this for a while and would
> like to know if people on this list think the
> following would be a feasible/useful addition to
> GRASS (7):
>
> How about, in addition to the MASK raster, we'd
> also allow the user to specify a COST raster?
> This woul
This sounds like a potentially interesting and valuable idea. I don't know what
the 'cost' might be in terms of building this functionality into other modules.
Michael
On Mar 1, 2012, at 12:00 PM, wrote:
> Date: Thu, 01 Mar 2012 09:27:16 +0100
> From: Benjamin Ducke
> Subject: [GRASS-dev] A
On Wed, Feb 29, 2012 at 8:23 AM, Benjamin Ducke wrote:
> Dear Devs,
>
> A while ago, I submitted a small patch for v.out.ogr
> that moves the SQL SELECT out of the mk_att() function,
> so that this costly operation does not have to be
> performed multiple times:
>
> http://lists.osgeo.org/pipermai
Hi All,
I have been pondering this for a while and would
like to know if people on this list think the
following would be a feasible/useful addition to
GRASS (7):
How about, in addition to the MASK raster, we'd
also allow the user to specify a COST raster?
This would allow all raster modules that