April 6, 2011
12:13 p.m.
Hi Zach and Derek, thank you very much for your quick and clear answers. Of course the third parameter is the out array, I was just being very stupid! (I had read the documentation though, but somehow it didn't make it to my brain :-) Sorry...
Read the documentation for numpy.minimum and numpy.maximum: they give you element-wise minimum values from two arrays passed as arguments. E.g.:
numpy.minimum([1,2,3],[3,2,1]) array([1, 2, 1])
The optional third parameter to numpy.minimum is an "out" array - an array to place the results into instead of making a new array for that purpose. (This can save time / memory in various cases.)
Thanks again, Emmanuelle