CompositeBands does not work for BMP, GIF, JPEG, JPG2000, PNG

[WentaoChe]

Hi,

CompositeBands does not work for  BMP, GIF, JPEG, JPG2000, PNG, but it works for BIL, BIP, BSQ, DAT,IMG,TIFF.
Here is the error message:

in_band = "rr"+";"+"gg"+";"+"bb"
out_file = 'test.png'
gp.CompositeBands_management(in_band, out_file)

arcgisscripting.ExecuteError: ERROR 000446: Output file format with specified pixel type or number of bands or colormap is not supported. Refer to the 'Technical specifications for raster dataset formats' help section in Desktop Help.
Failed to execute (CompositeBands).

Wentao
KKC, Tokyo, Japan

[JieZhang]

Hi Wentao,

As the error message says, please refer to the technical specification for Raster dataset format. For example, we only support 8bit and 16bit PNG format, and the band number is limited to 1 or 3 band.

http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?id=3103&pid=3101&topicname=Technical_specificati...

Thanks
Jie

[WentaoChe]

Hi Jie,

Thank you for your reply.

Just as you wrote, my Grid rr, gg, bb are 3 Floating Grids ranging from 0.0 to 255.0, I should set those 3 Grids as Integer type before using CompositeBands to output to a PNG.

Thanks again,

Wentao,
KKC, Tokyo, Japan

[SaraGilbert]

How do you change to integer?

[EricRice]

Sara,

You can run the Int tool from Spatial Analyst or 3D Analyst.  

Regards,
Eric