Python Tutorial - Numpy Hstack
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^Downloadable code & more! np.hstack() is a numpy function using two or more arrays that allows you to combine arrays and make them into one array. Hstack stands for horizontal stack. This video explains how to use python numpy hstack function on arrays / matrices.
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How to use np.hstack in python
we import numpy as np
And now we will create some arrays to demonstrate with.
To create an array type np.array, parentheses, bracket to start the matrix, and a bracket starting each row. End by closing the last bracket and parentheses.
We will press the up arrow on the keyboard to bring that up again, and we can edit it to make a matrix y
So here we have matrix x
and here is matrix y
we type np.hstack with parenthesis, and then you MUST make the entry a tuple, so do double parenthesis and put x comma y close close
Notice the x array is on the left and the y matrix is on the right since we put x first then y. h stack is horizontal stack. For it to work, both matrices must have the same amount of ROWS
So remember HR Hstack works when Rows line up.
There you have it, that is how you use Hstack in python
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