Paul Johnston wrote: > Hi I'm new to python and have just been taking a look at what it has > to offer. > I noted the lack of matrices so installed numpy
You will want to ask numpy questions on the numpy list. http://www.scipy.org/Mailing_Lists numpy arrays are not matrices; they are arrays. All of the arithmetic operations on them are done element-wise. The dot() function will do matrix multiplication. There is a matrix class (with the constructor numpy.mat(some_array)) that derives from arrays and overrides the * operator to do matrix multiplication if that is what you want. I prefer using dot() on regular arrays, myself. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
