Jan. 24, 2009
10:58 p.m.
Pierre, I've found what I consider to be a bug in the new mafromtxt (though apparently it existed in earlier versions as well). If you have an entire column of data in a file that contains only masked data, and try to get mafromtxt to automatically choose the dtype, the dtype gets selected to be object type. In this case, I'd think the better behavior would be float, but I'm not sure how hard it would be to make this the case. Here's a test case: import numpy as np from StringIO import StringIO s = StringIO('1 2 3\n4 5 6\n') a = np.mafromtxt(s, missing='2,5', dtype=None) print a.dtype Ryan -- Ryan May Graduate Research Assistant School of Meteorology University of Oklahoma