Changes between Version 32 and Version 33 of WKTRaster/SpecificationWorking03

Timestamp:

01/05/11 14:18:04 (14 years ago)

Author:

pracine

Comment:

—

WKTRaster/SpecificationWorking03

@@ -82 +82 @@
 The most minimalistic versions of the function should assume band 1, 2 and 3 as being r, g, b and the quality equal to 75:
 
-ST_AsJPEG(raster) -quality = 75
+ ST_AsJPEG(raster) -quality = 75
 
 A variant allow specifying the quality:
 
-ST_AsJPEG(raster, integer)
+ ST_AsJPEG(raster, integer)
 
 Another variant should enable us to specify which band correspond to the r, the g and the b:
 
-ST_AsJPEG(raster, integer, integer, integer) - raster, rband, gband, bband, quality=75[[BR]]
-ST_AsJPEG(raster, integer, integer, integer, integer) - raster, rband, gband, bband, quality
+ ST_AsJPEG(raster, integer, integer, integer) - raster, rband, gband, bband, quality=75
+
+ ST_AsJPEG(raster, integer, integer, integer, integer) - raster, rband, gband, bband, quality
 
 Another version should be designed to be used with a future ST_Band(raster) function. In this case there is no attempt to extract r, g or b band from any passed raster:
 
-ST_AsJPEG(raster, raster, raster)[[BR]]
-ST_AsJPEG(raster, raster, raster, integer) -with the quality param
+ ST_AsJPEG(raster, raster, raster)
+
+ ST_AsJPEG(raster, raster, raster, integer) -with the quality param
 
 Another series should allow converting 1 band raster with pixel of type 8BUI to a grayscale JPEG (Carefull study of the GDAL behavior when converting a single band to JPEG should be done before confirming these functions):
 
-ST_AsJPEG(raster, "GRAYSCALE") - convert only band 1 with quality = 75[[BR]]
-ST_AsJPEG(raster, "GRAYSCALE", integer) - convert only band 1 with specified quality[[BR]]
-ST_AsJPEG(raster, integer, "GRAYSCALE") - allow specifying the band number to convert[[BR]]
-ST_AsJPEG(raster, integer, "GRAYSCALE", integer) - allow specifying the band number to convert and the quality
+ ST_AsJPEG(raster, "GRAYSCALE") - convert only band 1 with quality = 75
+
+ ST_AsJPEG(raster, "GRAYSCALE", integer) - convert only band 1 with specified quality
+
+ ST_AsJPEG(raster, integer, "GRAYSCALE") - allow specifying the band number to convert
+
+ ST_AsJPEG(raster, integer, "GRAYSCALE", integer) - allow specifying the band number to convert and the quality
 
 Another series should allow converting 1 band raster of ANY pixel type to a grayscale JPEG. Pixel types different than 8BUI should be mapped according to specified min, max values and a mapping mode: "!MaxMinValue" (default) or "!MaxMinType".
 
-ST_AsJPEG(raster, "GRAYSCALE", min, max, text) - convert only band 1 with quality = 75[[BR]]
-ST_AsJPEG(raster, "GRAYSCALE", integer, min, max, text) - convert only band 1 with specified quality[[BR]]
-ST_AsJPEG(raster, integer, "GRAYSCALE", min, max, text) - allow specifying the band number to convert[[BR]]
-ST_AsJPEG(raster, integer, "GRAYSCALE", integer, min, max, text) - allow specifying the band number to convert and the quality
+ ST_AsJPEG(raster, "GRAYSCALE", min, max, text) - convert only band 1 with quality = 75
+
+ ST_AsJPEG(raster, "GRAYSCALE", integer, min, max, text) - convert only band 1 with specified quality
+
+ ST_AsJPEG(raster, integer, "GRAYSCALE", min, max, text) - allow specifying the band number to convert
+
+ ST_AsJPEG(raster, integer, "GRAYSCALE", integer, min, max, text) - allow specifying the band number to convert and the quality
 
 
@@ -132 +140 @@
 ----
 
-'''ST_AsGDALImage(raster, band int, type text, options text) -> bytea'''
+'''ST_AsGDALRaster(raster, band int, type text, options text) -> bytea'''
 
 Use GDAL to convert the raster into one of the format suported by GDAL.