Create 2D array from point x,y using numpy

Question

With a position x,y as 30,40 as the top left corner of a 30 by 30 pixels (900 pixels total) grid I want to create an array with these x,y points using numpy. I've tried with a list and for loop but it seems slow I hope numpy will be faster.

I think this answer has a solution for you: https://stackoverflow.com/a/32208565/5207081 — user5207081, Aug 12 '17 at 08:05

score 1 · Answer 1 · answered Aug 12 '17 at 08:07

1

source: Numpy matrix of coordinates

Something like this?

import numpy as np

rows = np.arange(30,60)
cols = np.arange(40,70)

coords = np.empty((len(rows), len(cols), 2), dtype=np.intp)

coords[..., 0] = rows[:, None]
coords[..., 1] = cols

answered Aug 12 '17 at 08:07

Anton vBR

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Not really this, it should return an array like [[30,40],[31,40],[32,40],...,[90,110]] – Samuel M. Aug 13 '17 at 08:53
@SamuelMuiruri That creates a bigger matrix than you originally asked for or am I missing smh? – Anton vBR Aug 13 '17 at 13:03

Create 2D array from point x,y using numpy

1 Answers1

source: Numpy matrix of coordinates