[postgis-users] Cost weighted distance raster

[Pierre Racine]

Hi Spencer,

I don’t know if they are still compatible with the newest PostGIS version.

They used to work fine but don’t expect very good performance.

Pierre

From: postgis-users [mailto:postgis-users-bounces at lists.osgeo.org] On Behalf Of Spencer Gardner
Sent: 3 mars 2017 15:03
To: postgis-users at lists.osgeo.org
Subject: [postgis-users] Cost weighted distance raster

I'm looking to work with PostGIS raster to complete some network analysis using a cost raster surface. I came across this GSOC project from 2012 which was supposed to create functions to accomplish this:
https://trac.osgeo.org/postgis/wiki/PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools

Does anyone know the status of this work? I don't see the functions in the reference documentation for PostGIS so it would appear this work has not been folded into the main project. The bottom of the GSOC report includes code to create new functions for Euclidean and Cost-Weighted distance, so I'm assuming I can just add those to my DB. Can anyone confirm that these functions work as expected?

Any information is appreciated.

Thanks,
Spencer


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