A few days ago I played with nd_image and was able to make it compile for scipy_core. In the process, I had some ideas for making the transition to scipy_core easier for numarray users: 1) It would be nice if there was someway to document on the Python level any needed changes. In the process, we might find things that need to be added to scipy_core. I would like to have some kind of program for automatically making most of those needed changes before a 1.0 release of scipy_core. 2) On the C-API side, my experience with nd_image showed me that quite a few of the numarray C-API calls can be written as macros while some will need to be additional functions. I think we could easily write a numcompatmodule.c and associated numcompat.h file so that users needing the numarray C-API could include the numcompat.h file and then the import_libnumarray() command would load the numcompatmodule.c with it's compatibility functions. In this way, the transition for C-API users could be as easy as changing the include file to numcompat.h? -Travis