Add an example for an equivalent of numpy's column_stack function in ndarray_for_numpy_users #650

synasius · 2019-06-30T13:34:13Z

I was looking for an equivalent function of numpy's column_stack (see https://docs.scipy.org/doc/numpy/reference/generated/numpy.column_stack.html) in ndarray docs.

This is how I managed to solve the issue:

use ndarray::{Array, Axis, stack, arr2};

let a = Array::linspace(0., 1., 5).into_shape((5,1)).unwrap();
let b = Array::<f64, _>::ones((5, 1));
let res = stack(Axis(1), &[b.view(), a.view()]);
assert!(res == Ok(arr2(&[[1., 0.],
                 [1., 0.25],
                 [1., 0.5],
                 [1., 0.75],
                 [1., 1.]])));

It could be worth to have an example in ndarray_for_numpy_users section of the docs.

LukeMathWalker added A-docs good first issue labels Jul 1, 2019

LukeMathWalker mentioned this issue Jul 28, 2019

Add dstack, vstack, and hstack #667

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rust-ndarray / ndarray

Add an example for an equivalent of numpy's column_stack function in ndarray_for_numpy_users #650

Add an example for an equivalent of numpy's column_stack function in ndarray_for_numpy_users #650

synasius commented Jun 30, 2019 •

edited by LukeMathWalker

rust-ndarray / ndarray

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Add an example for an equivalent of numpy's column_stack function in ndarray_for_numpy_users #650

Add an example for an equivalent of numpy's column_stack function in ndarray_for_numpy_users #650

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synasius commented Jun 30, 2019 • edited by LukeMathWalker

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synasius commented Jun 30, 2019 •

edited by LukeMathWalker