Hi, those formats are not intended to be readable other than by the format exchange programs, and I would strongly advise against trying!
Instead, pretty well all programs read a CCP4 binary map directly and do whatever they need to with the map array in memory. The documentation for the Fortran API is in your $CDOC/maplib.doc and for the C++ API at (among others) http://www.ysbl.york.ac.uk/~cowtan/clipper/doc/p_develop_map.html . If you're really desperate you could probably hack it with the output from mapdump, though again that format was designed only for printing (in the days of the dim & distant past when we contoured map sections by hand!), not for machine processing. Cheers -- Ian On Tue, May 25, 2010 at 7:49 PM, Hailiang Zhang <[email protected]> wrote: > Hi, > > I wanted to convert a binary ccp4 map file to a readable format so that I > can retrieve the electron density at each real space grid point. Just > tried MAPTONA4 and MAPEXCHANGE, but the resulting ascii file are not > readable, and I didn't find any documentataion about how to read them. > Could somebody give me any hint? Thanks a lot! > > Best Regards, Hailiang >
