Opened 7 years ago

Last modified 6 years ago

#3776 new defect

[raster] ST_DumpAsPolygons() stop differenciate values when they are higher than 1048576 — at Version 2

Reported by: pracine Owned by: Bborie Park
Priority: medium Milestone: PostGIS GDAL
Component: raster Version: 2.3.x
Keywords: raster Cc:

Description (last modified by pracine)

This works fine:

SELECT (ST_DumpAsPolygons(ST_SetValue(ST_AddBand(ST_MakeEmptyRaster(1, 2, 0, 0, 1), '32BUI'::text, 1048575), 1, 1, 1048576))).* rast

returning two polygons, but this fails:

SELECT (ST_DumpAsPolygons(ST_SetValue(ST_AddBand(ST_MakeEmptyRaster(1, 2, 0, 0, 1), '32BUI'::text, 1048576), 1, 1, 1048577))).* rast

The only difference is when the pixel values get over 1048576 (which is 0x100000 by the way).

Change History (2)

comment:1 by pracine, 7 years ago

Might be a symptom of #2353

comment:2 by pracine, 7 years ago

Description: modified (diff)
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