arcpy.Describe.PixelType returns useless value

DavidJames

in a Python window in ArcGIS 10.3.1...using arcpy.Describe on a raster will yield an appropriate value for the raster format...'S32'...which stands for 32_BIT_SIGNED. The returned value is NOT a valid value for use in other commands, such as CopyRaster, which require the quoted string -- "32_BIT_SIGNED".

Please...change Describe or change the commnads to honor the returned Describe value. Left hand, right hand, meet each other!

>>> PxT = arcpy.Describe("ec3m070802080201").PixelType

>>> PxT
u'S32'

>>> arcpy.CopyRaster_management("ec3m070802080201", "newRas", "","","","","",PxT)
   Runtime error Traceback (most recent call last):
   File "<string>", line 1, in <module>
   File "c:\program files (x86)\arcgis\desktop10.3\arcpy\arcpy\management.py",
   line 12583, in CopyRaster raise e ExecuteError: ERROR 000800:
   The value is not a member of
   1_BIT | 2_BIT | 4_BIT | 8_BIT_UNSIGNED |
   8_BIT_SIGNED | 16_BIT_UNSIGNED |
   16_BIT_SIGNED | 32_BIT_UNSIGNED |
   32_BIT_SIGNED | 32_BIT_FLOAT | 64_BIT.

>>> arcpy.CopyRaster_management("ec3m070802080201", "newRas", "","","","","","32_BIT_SIGNED")
<Result 'D:\\Data\\ArcGISdefaults\\MyDefault.gdb\\newRas'>

Luke_Pinner · ‎11-23-2022

Workaround:

pixel_types = {
    "U1": "1_BIT",
    "U2": "2_BIT",
    "U4": "4_BIT",
    "S8": "8_BIT_SIGNED",
    "U8": "8_BIT_UNSIGNED",
    "S16": "16_BIT_UNSIGNED",
    "U16": "16_BIT_SIGNED",
    "S32": "32_BIT_UNSIGNED",
    "U32": "32_BIT_SIGNED",
    "F32": "32_BIT_FLOAT",
    "F64": "64_BIT"
}

pixel_type = pixel_types[arcpy.Describe("raster").PixelType]
# or
pixel_type = pixel_types[arcpy.da.Describe("raster")["PixelType"]]