I have loaded the Slope surface created in PostGIS to OpenJump but it is
displaying as a single polygon with attributes of all the values being 1.
Have I made a mistake when using the ST_Slope function?
The code I used is as below:
SELECT ST_AsBinary((gv).geom), (gv).val
FROM (SELECT
ST_DumpAsPolygons(ST_Slope(ST_MapAlgebraExpr(ST_AddBand(ST_MakeEmptyRaster(10,
10, 0, 0, 0.1, 0.1, 0, 0, 4269), '8BUI'::text, 1, 0), '32BUI', '([rast.x] -
1) *
10 + [rast.y]'), 1, '8BUI'::text)) gv
FROM height_newcastle
) foo
Any advice again, appreciated.
Regards,
James
--
View this message in context:
http://postgis.17.n6.nabble.com/ST-Slope-tp4551303p4682019.html
Sent from the PostGIS - User mailing list archive at Nabble.com.
_______________________________________________
postgis-users mailing list
postgis-users@postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users
