save Raster.tif as JPG

Question

Hi,
I have a simple question. I appreciate if some one can help me.
I have raster data with TIf extension which I need to save it as JPG format file and use it in another software.
whenever I try to export my raster, the following error comes up:
Jpeg comparison is only supported for 8 Bit unsigned or 16 Bit unsigned data with one or 63 bands. please select another comparison method. 
I tried to copy my raster with copy rater tool in 8 bit but my raster changed to complete white image. Then I tried recalculating statistics but nothing changed. 
what should I do?
Thanks.

mody_buchbinder · Answer

Hi

If your data is not really 32bit you can use CopyRaster and set the Pixel Type and it will truncate your values into 16/8bit
If you have real values above 16bit you will have to work with the raster calculator to make it 16bit only before you can truncate it.

Have fun
Mody

av · Answer

There is the source of the problem. A jpg file format can not support 32 bit. Can you convert your 32 bit tif to an 8 bit unsigned tif prior to attempting a jpg conversion (do you need 32 bit data type)? Are any other file formats supported by the other software?
for information regarding raster file formats, see: http://resources.arcgis.com/en/help/main/10.2/index.html#//009t0000000q000000
Best Regards,
Jim

Thanks for your response.
But how can I convert it?
I have found a pdf explaining how to convert with raster calculator but it is not working.
http://www.forestry.gov.uk/pdf/082_rescale.pdf/$FILE/082_rescale.pdf
Do you know how I can convert 32 bit raster to 8 bit one?
Thanks

JimCousins · Answer

There is the source of the problem. A jpg file format can not support 32 bit. Can you convert your 32 bit tif to an 8 bit unsigned tif prior to attempting a jpg conversion (do you need 32 bit data type)? Are any other file formats supported by the other software?
for information regarding raster file formats, see: http://resources.arcgis.com/en/help/main/10.2/index.html#//009t0000000q000000
Best Regards,
Jim