Use of dot()

[dibyendumajumdar]

ray-optics/src/rayoptics/elem/transform.py

Line 70 in e55a4c1

r_cascade = r_cascade.dot(r_after_s1.transpose())

Hi Mike, trying to understand what the dot product is meant to be - dot between matrix/vector and matrix/matrix - is this just matrix multiplication?

[mjhoptics]

This is a matrix-matrix multiplication. Numpy has several ways of doing this, I doubt I had a well thought out reason for choosing this, other than it seemed to work.