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: stackoverflow.com/a/32208565/5207081 — dusk
– dusk, Commented Aug 12, 2017 at 8:05

Anton vBR · Accepted Answer · 2017-08-12 08:07:52Z

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, 2017 at 8:07

Anton vBR

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2 Comments

Samuel M. Over a year ago

Not really this, it should return an array like [[30,40],[31,40],[32,40],...,[90,110]]

Anton vBR Over a year ago

@SamuelMuiruri That creates a bigger matrix than you originally asked for or am I missing smh?

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