Changes between Version 72 and Version 73 of WKTRaster/SpecificationWorking03

Timestamp:

Apr 29, 2011, 10:30:36 AM (13 years ago)

Author:

Bborie Park

Comment:

—

WKTRaster/SpecificationWorking03

@@ -149 +149 @@
 The functions are:
 
-1. ST_ApproxMinMax(rast raster, nband int, ignore_nodata boolean, sample float8) -> record
-
-  sample: a value between 0 and 100 indicating the percentage of the raster band's pixels to consider when determining the min/max pair.
-
-{{{
-ST_ApproxMinMax(rast, 3, FALSE, 10)
-
-ST_ApproxMinMax(rast, 1, TRUE, 50)
-}}}
-
-2. ST_ApproxMinMax(rast raster, ignore_nodata boolean, sample float8) -> record
+1. ST_ApproxMinMax(rast raster, nband int, ignore_nodata boolean, sample double precision) -> record
+
+  sample: a value between 0 and 1 indicating the percentage of the raster band's pixels to consider when determining the min/max pair.
+
+{{{
+ST_ApproxMinMax(rast, 3, FALSE, 0.1)
+
+ST_ApproxMinMax(rast, 1, TRUE, 0.5)
+}}}
+
+2. ST_ApproxMinMax(rast raster, ignore_nodata boolean, sample double precision) -> record
 
   assumes that nband = 1
 
 {{{
-ST_ApproxMinMax(rast, FALSE, 1)
-
-ST_ApproxMinMax(rast, TRUE, 2.5)
-}}}
-
-3. ST_ApproxMinMax(rast raster, sample float8) -> record
+ST_ApproxMinMax(rast, FALSE, 0.01)
+
+ST_ApproxMinMax(rast, TRUE, 0.025)
+}}}
+
+3. ST_ApproxMinMax(rast raster, sample double precision) -> record
 
   assumes that nband = 1 and ignore_nodata = TRUE
 
 {{{
-ST_ApproxMinMax(rast, 25)
+ST_ApproxMinMax(rast, 0.25)
 }}}
 
 4. ST_ApproxMinMax(rast raster) -> record
 
-  assumes that nband = 1, ignore_nodata = TRUE and sample = 10
+  assumes that nband = 1, ignore_nodata = TRUE and sample = 0.1
 
 {{{