Python Tutorial - Numpy Vstack

np.vstack() is a numpy function using two or more arrays that allows you to combine arrays and make them into one array. Vstack stands for vertical stack. This video explains how to use python numpy vstack function on arrays / matrices.

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VSTACK

How to use np.vstack 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.vstack 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 top and the y matrix is on the bottom since we put x first then y. v stack is vertical stack. For it to work, both matrices must have the same amount of Columns

SO remember VC vstack works when column dimensions are the same.

There you have it, that is how you use Vstack in python

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