Re: [Numpy-discussion] median filtering a masked array
On 5 November 2014 19:11, Moroney, Catherine M (398E) catherine.m.moro...@jpl.nasa.gov wrote: What is the recommended way of doing a fast median filter on an array where only certain elements of the array need to be calculated? I'm trying to avoid a nested loop over all (I,J) elements. Since you are using FORTRAN, I believe the simplest way is to do this double loop in Cython. While you are at it, if you want to squeeze cycles, you can implement the median in Cython too. Here is some code: http://numpy-discussion.10968.n7.nabble.com/A-faster-median-Wirth-s-method-td14267.html /David. ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] median filtering a masked array
On 2014-11-06 11:10:29, Daπid davidmen...@gmail.com wrote: On 5 November 2014 19:11, Moroney, Catherine M (398E) catherine.m.moro...@jpl.nasa.gov wrote: What is the recommended way of doing a fast median filter on an array where only certain elements of the array need to be calculated? I'm trying to avoid a nested loop over all (I,J) elements. Since you are using FORTRAN, I believe the simplest way is to do this double loop in Cython. If you'd prefer to stay on the Python side, have a look at scipy.ndimage.generic_filter Stéfan ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
