The BIN size cannot currently be controlled in ENVI. We already reported such request to the development so it would be perhaps available in a future version of the product. However it is possible (if you have an ENVI+IDL license) to control this value using the following IDL routine: HISTROGRAM. I added a link to the IDL documentation for this routine http://www.exelisvis.com/docs/HISTOGR...

Hello,
Has this issue been resolved? I have a raster image with value of each pixel that range from 0 to 0.06. I have created 16 ROI's covering different areas of the image that I want to generate statistics for. The problem is every ROI has a different range of values, therefore the bin size is different and I can't easily compare the statistics from the different ROI's. I want to set the minimum value, maximum value, and bin size prior to generating the statistics. Thanks.