Hi, As I understand, the general molecular mask generated by CCP4 (eg sfall+mapmask) are binary mask file which needs lots of memory space. I just wonder whether we can generate some small mask files represented by, say, envelope function (F(sita,psi)) (http://journals.iucr.org/d/issues/2001/10/00/ba5001/ba5001.pdf). This will save lots of disc space and lots of efforts for my problem. Thanks!
Hailiang
