Free Interactive Python Tutorial

Given: R is an mxn float matrix Output: O is an mxn matrix where O[i,j] = R[i,j] if (i,j) is a loca… Read more Python: Faster Local Maximum In 2-d Matrix

I have a 3D matrix in python as the following: import numpy as np a = np.ones((2,2,3)) a[0,0,0] = … Read more Converting 3d Matrix To Cascaded 2d Matrices

I create an arbitrary 2x2 matrix: In [87]: mymat = np.matrix([[2,4],[5,3]]) In [88]: mymat Out[88]… Read more Eigenvectors Created By Numpy.linalg.eig Don't Seem Correct

In numpy, I have an array of N 3x3 matrices. This would be an example of how I'm storing them (… Read more Multiple Matrix Multiplication

I have the following numpy row matrix. X = np.array([1,2,3]) I want to create a block matrix as fo… Read more What Is The Best Way To Create A Block Matrix Form A Row Vector?

a = np.asarray([1,2,3]) b = np.asarray([2,3,4,5]) a.shape (3,) b.shape (4,) I want a 3 by 4 m… Read more Python: Multiply Two 1d Matrices In Numpy

I am trying to find the fastest way to perform the following pairwise distance calculation in Pytho… Read more Calculate Weighted Pairwise Distance Matrix In Python

I'm searching for an efficient way to create a matrix of occurrences from two arrays that conta… Read more Fill Matrix Of Occurences From Column/row Arrays Of Indexes