Hello Pythonistas! I'm looking for a way to duplicate entries in a symmetrical matrix that's composed of genetic distances. For example, suppose I have a matrix like the following:
A B C A 0.000000 0.500000 1.000000 B 0.500000 0.000000 0.500000 C 1.000000 0.500000 0.000000 Say I want to duplicate entry B; the resulting matrix would look like: A B B C A 0.000000 0.500000 0.500000 1.000000 B 0.500000 0.000000 0.000000 0.500000 B 0.500000 0.000000 0.000000 0.500000 C 1.000000 0.500000 0.500000 0.000000 The cases I'd like to do this for are more complicated, naturally, where I want to duplicate different entries different numbers of times. I'm aware of Numeric, Numarray, and NumPy, though I've not used any of them, but I am not sure if any of them possess a simple means to duplicate entries in a matrix. I started writing code on my own but I can see it is becoming exponentially more complex, and before I proceed any further, I want to make sure I'm not reinventing any wheels. If anyone here has any advice on how to manipulate matrices in this manner, I'd _greatly_ appreciate it! Thanks in advance, Chris -- http://mail.python.org/mailman/listinfo/python-list
