#
# Test of classification methods on a floating point input with provided
# scaling that causes merging of some original values throwing off results.
# In particular, a substantial chunk of data that should have fallen into the
# last class will be ignored because it is outside the scaling range.  Also, 
# values like -4 will now fall into the green class because the fall into the
# 0 to -5.25 bucket which is averaged to -2.675 for classification purposes. 
#
MAP

NAME TEST
STATUS ON
SIZE 400 300
EXTENT 0.5 0.5 399.5 299.5
IMAGECOLOR 255 255 0

IMAGETYPE png8_t

OUTPUTFORMAT
  NAME png8_t
  DRIVER "GD/PNG"
  IMAGEMODE PC256
  TRANSPARENT ON
END

LAYER
  NAME grid1
  TYPE raster
  STATUS default
  DATA data/float.tif
  PROCESSING "SCALE=-10.5,10.5"
  PROCESSING "SCALE_BUCKETS=4"
  CLASS 
    NAME "red"
    EXPRESSION ([pixel] < -3)
    STYLE  COLOR 255 0 0  END
  END
  CLASS 
    NAME "green"
    EXPRESSION ([pixel] >= -3 and [pixel] < 3)
    COLOR 0 255 0
  END
  CLASS 
    NAME "blue"
    EXPRESSION ([pixel] >= 3)
    COLOR 0 0 255
  END
END

END # of map file