Changes between Version 17 and Version 18 of WKTRaster/SpecificationWorking01

Timestamp:

Apr 16, 2009, 8:09:03 AM (15 years ago)

Author:

pracine

Comment:

—

WKTRaster/SpecificationWorking01

@@ -185 +185 @@
  * Method "None": No mapping. This is possible only for 8BUI.
 
- * Method "MaxMinValue": Use the Max and the Min cached in the raster. e.g. for 16BSI (min, max) -> (-2033, 2456) -> (round((-2033 - -2033)/(2456 - -2033)*255), round((2456 - -2033)/(2456 - -2033)*255)) -> (0, 255).[[BR]]
+ * Method "!MaxMinValue": Use the Max and the Min cached in the raster. e.g. for 16BSI (min, max) -> (-2033, 2456) -> (round((-2033 - -2033)/(2456 - -2033)*255), round((2456 - -2033)/(2456 - -2033)*255)) -> (0, 255).[[BR]]
 [[BR]]This is equivalent to RT_AsJPEG(raster, quality, RT_Minimum(rast), RT_Maximum(rast))
 
- * Method "MaxMinType": Use the Max and the Min allowed by the type. e.g. for 16BSI (min, max) -> (-2033, 2456) -> (round((-2033 - -32768)/(32767 - -32768)*255), round((2456 - -32768)/(32767 - -32768)*255)) -> (120, 137)[[BR]]
+ * Method "!MaxMinType": Use the Max and the Min allowed by the type. e.g. for 16BSI (min, max) -> (-2033, 2456) -> (round((-2033 - -32768)/(32767 - -32768)*255), round((2456 - -32768)/(32767 - -32768)*255)) -> (120, 137)[[BR]]
 [[BR]]This would be equivalent to RT_AsJPEG(raster, quality, RT_BandPixelTypeMin(rast), RT_BandPixelTypeMax(rast)). Both functions (RT_BandPixelTypeMin & BandPixelTypeMax) are not yet planned and I could not find an SQL query that returns the equivalent range for a type. [http://groups.google.nl/group/microsoft.public.sqlserver.programming/browse_thread/thread/46512c2691da4607/6743f4aea485c6d1 One possible solution.]