Hi, I would like to automate some ENVI tasks for a few hundred images. Specifically, I have HDF files from each of which I want to extract certain layers, and then to save these into standard ENVI files. I am familiar with ENVI from the GUI, but I don't think I want to do this for hundreds of HDF files. My question is: do I use ENVI IDL to automate this task, or is there some other way to do it? If I have to use IDL, can someone please direct me to some relevant tutorials/documents to get me started? Thanks for any help.