On Feb 10, 2012, at 3:29 PM, Brad Reisfeld wrote: > Hi, > > I am relatively new to numpy and am seeking some advice on an > appropriate way to do the following simple task. > > The idea is to build a class that will allow a user to easily remove > and keep columns and rows in a 2D numpy array. <clip>
Apart from the good suggestions already made, you may also find useful the carray package available in: https://github.com/FrancescAlted/carry It implements a ctable object that has different capabilities: * Allows addition and removal of columns very efficiently * Allows to enlarge and shrink the ctable * Supports compression (via the fast blosc compressor) * If numexpr is installed, you can seamlessly operate with columns efficiently * You can efficiently select rows using complex conditions (needs numexpr too) You can have a quick look at how this works in the second part of the tutorial: https://github.com/FrancescAlted/carray/blob/master/doc/tutorial.rst Hope it helps, -- Francesc Alted _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
