[postgis-users] ArcGIS GRID data

Puneet Kishor punk.kish at gmail.com
Sat Oct 1 08:07:43 PDT 2011

On Sep 30, 2011, at 11:15 PM, pcreso at pcreso.com wrote:

> I have converted such grids to XYZ points using GDAL & stored them as Postgis points, but ensure you are clear about your pixel vs grid registration (are the X&Y coords at cell origin or centre?)

Thanks Brent. This is good advice. I am still at a prelim stage determining the best foot forward. My choices, as I knew until now, were tiff and grid. I am intrigued by the idea of storing them as Pg points, but am concerned about data inflation. A couple of thousand (or more) points in each direction can result in several million points, and the db overhead per row can be killing.

> I'll leave it to you to determine whether upgrading to a version supporting PGRASTER is viable or preferable.

At some point, when the stable version arrives, then I would definitely consider it. Right now I have little latitude with testing non-stable software.

Many thanks again. Good to hear another pov.

> --- On Sat, 10/1/11, Puneet Kishor <punk.kish at gmail.com> wrote:
> From: Puneet Kishor <punk.kish at gmail.com>
> Subject: [postgis-users] ArcGIS GRID data
> To: "PostGIS Users Discussion" <postgis-users at postgis.refractions.net>
> Date: Saturday, October 1, 2011, 2:20 PM
> What are my options for storing and displaying GRID data? That is, assuming I am using the current stable version of Pg (1.5.x) and don't want to play with the bleading edge.
> --
> Puneet Kishor 
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