[postgis-users] Question: calculating the slope with PostGIS 2.0

[Pierre LACROIX]

Hi,

I would like to generate the slope from a DEM.
The DEM is called Raster1. It has one band and holds integer values.
>From the the SQL Editor (in the PG Admin) the following command displays
values but does not generate an output slope raster:

SELECT ST_Slope(rast, 1,'Integer') from Raster1;

What is the syntax to generate the slope raster?

Thanks in advance.

Pierre
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