CODEWITHSUNDEEP
pythonnumpymatplotlib
nrob
nrob

Reputation: 889

find parent array of numpy slice array

Is it possible to find the parent array of a slice ie. the array that the slice is taken from? I would like to do this so I can add functionality to matplotlib plots which allows you to change which slice of an array you are viewing interactively in a plot. For instance, if I do this

plt.pcolormesh(myArray[0,:,:])

I would like to be able to run some code to change the plot to

plt.pcolormesh(myArray[1,:,:])

but to do that I need to know that myArray[0,:,:] is a slice of myArray.

Thanks Niall

Upvotes: 1

Views: 455

Answers (1)

mgilson
mgilson

Reputation: 310049

With simple slices, you can look at the base attribute:

a = np.arange(50)
b = a[10:20]
print (b.base is a)

However, I don't believe that this is guaranteed to work in all circumstances...(depending on contiguousness of a, etc.)

Upvotes: 4

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