Hello all,
I am trying to produce a slope surface raster from a tiff.
The raster has 1 band, pixeltype is 8 bit unsigned integer but I cannot get
the function to work.
Have tried variances of:
SELECT
ST_Slope(rast, 1, '8BUI') or (rast, 1, 8)
FROM
nclraster
But PostGIS returns ERROR: function st_slope(raster, integer, integer) does
not exist
LINE 2: ST_Slope(rast,1,8).
Any pointers as to where I'm going wrong much appreciated
James
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