[postgis-tickets] [PostGIS] #2555: [raster]: ST_Reclass Working with negative numbers seems broken
PostGIS
trac at osgeo.org
Sun Dec 1 19:54:44 PST 2013
#2555: [raster]: ST_Reclass Working with negative numbers seems broken
--------------------+-------------------------------------------------------
Reporter: robe | Owner: dustymugs
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 2.0.5
Component: raster | Version: 2.0.x
Keywords: |
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Comment(by robe):
for record I was wrong about it not doing anything with negatives. The
below actually does what I expect
{{{
SELECT ST_Value(ST_Reclass(rast, 1, '[-1000-9000]:[-100-900]',
'32BF'),1,1) As new, ST_Value(rast,1,1) As orig
from ch12.tmean limit 10;
}}}
works as expected and gives:
{{{
new | orig
------------------+------
23.3999996185303 | 234
23.6000003814697 | 236
24 | 240
24.1000003814697 | 241
23.3999996185303 | 234
21.1000003814697 | 211
20.7999992370605 | 208
22.5 | 225
22.2000007629395 | 222
23 | 230
}}}
so it seems the -9000 is too far out. I have values in -9999 for no data
value so not sure why that would be illegal
--
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2555#comment:4>
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