How to find the index of an array within an array

Question

I have created an array in the way shown below; which represents 3 pairs of co-ordinates. My issue is I don\'t seem to be able to find the index of a particular pair of co-o

Answer 1

index() is a method of the type list, not of numpy.array. Try:

R.tolist().index(x)

Where x is, for example, the third entry of R. This first convert your array into a list, then you can use index ;)