reclassarg — A composite type used as input into the ST_Reclass function defining the behavior of reclassification.
A composite type used as input into the ST_Reclass function defining the behavior of reclassification.
nband integer
The band number of band to reclassify.
reclassexpr text
range expression consisting of comma delimited range:map_range mappings. : to define mapping that defines how to map old band values to new band values. ( means >, ) means less than, ] < or equal, [ means > or equal
1. [a-b] = a <= x <= b 2. (a-b] = a < x <= b 3. [a-b) = a <= x < b 4. (a-b) = a < x < b
( notation is optional so a-b means the same as (a-b)
pixeltype text
One of defined pixel types as described in ST_BandPixelType
nodataval double precision
Value to treat as no data. For image outputs that support transparency, these will be blank.
SELECT ROW(2, '0-100:1-10, 101-500:11-150,501 - 10000: 151-254', '8BUI', 255)::reclassarg;
SELECT ROW(1, '0-100]:0, (100-255:1', '1BB', NULL)::reclassarg;