[postgis-users] Cost weighted distance raster

[Spencer Gardner]

Ah thanks. Didn't see the code page. I'll let you know whether these work
as is or if they need tweaking.

On Tue, Mar 7, 2017 at 11:51 AM, Pierre Racine <Pierre.Racine at sbf.ulaval.ca>
wrote:

> In the code page :
>
>
>
> https://trac.osgeo.org/postgis/wiki/PostGIS_Raster_SoC_Idea_2012/Distance_
> Analysis_Tools/code
>
>
>
> There is a ST_CostDistance() function.
>
>
>
> Pierre
>
>
>
> *From:* Spencer Gardner [mailto:spencergardner at gmail.com]
> *Sent:* 7 mars 2017 12:35
> *To:* Pierre Racine <Pierre.Racine at sbf.ulaval.ca>
> *Cc:* postgis-users at lists.osgeo.org
> *Subject:* Re: Cost weighted distance raster
>
>
>
> I didn't see any code for the Cost Distance function, only the Euclidean
> Distance. Did I miss something? Or is it located on a different website
> that I haven't found?
>
>
>
> Thanks,
>
> Spencer
>
>
>
> On Tue, Mar 7, 2017 at 10:23 AM, Pierre Racine <
> Pierre.Racine at sbf.ulaval.ca> wrote:
>
> There is no .sql. just copy the functions into a .sql text file and
> execute.
>
>
>
> *From:* Spencer Gardner [mailto:spencergardner at gmail.com]
> *Sent:* 7 mars 2017 11:16
> *To:* Pierre Racine <Pierre.Racine at sbf.ulaval.ca>
> *Cc:* postgis-users at lists.osgeo.org
> *Subject:* Re: Cost weighted distance raster
>
>
>
> On Tue, Mar 7, 2017 at 7:07 AM, Pierre Racine <Pierre.Racine at sbf.ulaval.ca>
> wrote:
>
> Hi Spencer,
>
>
>
> Integrating something in the main PostGIS core is hard work. That’s why I
> started the PostGIS Addons: to quickly gather PLpgSQL-only functions into
> an easy to install .SQL file. Why I did not integrate those functions in
> the Addons yet? Lack of time, not much work involving PostGIS since a
> while, not sure the code is working properly.
>
>
>
> Did you get time to test it? If it work fine, I might take time to add it
> to the Addons before FOSS4G 2017.
>
>
>
> Pierre
>
>
>
> That makes sense. I don't see a master .sql file to use for adding the
> functions to the database. The GSOC proposal I linked to previously has
> code for the Euclidean Distance function, but not for the Cost-Weighted
> Distance function. Is there a single .sql file somewhere that I can use to
> create both functions? I'd love to take a look and see if I can get them
> both working.
>
>
>
>
>
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