How do I append rows to an array in Python?
Use .append('item-goes-here') to append.
I have an array which is a 1X3 matrix, where:
    column 1 = x coordinate
    column 2 = y coordinate
    column 3 = direction of vector.
I am tracking a series of points along a path.
At each point i want to store the x,y and direction back into the array, as a row.
So in the end, my array has grown vertically, with more and more rows that represents points along the path.
Im struggling to build this function inside a class.
Help plz?
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