Re: [Numpy-discussion] Recommendations for using numpy ma?

Russell, What used to be numpy.core.ma is now numpy.oldnumeric.ma, but this latter isd no longer supported and will disappear soon as well. Just use numpy.ma If you really need support to ancient versions of numpy, just check the import try: import numpy.core.ma as ma except ImportError: import numpy as ma Then, you need to replace every mention of numpy.core.ma in your code by ma. Your example would then become: unmaskedArr = numpy.array(     ma.array( ^^         dataArr,         mask = mask & self.stretchExcludeBits,         dtype = float,     ).compressed()) On another note: wha't the problem with 'compressed' ? It should return a ndarray, why/how doesn't it work ?