Python Numpy Where
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^Downloadable code & more! np.where
Oh right so we have a giant matrix A and another smaller matrix be in this video we’re going to use Np.where to change and manipulate the matrices how we want.
np.where can take in up to 3 parameters, the array of booleans, the array to keep values, and a replacement array. I will show you how it works with some examples.
all right so let’s going with our examples. First we will just give np.where a mask on b where b 0. This will give back indices where the condition is met.
Lets do the same thing with A
In this next example we will give a few more parameters .
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