append versus resize for numpy array
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by Abruzzo Forte e Gentile
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Published on 2010-05-25T21:30:11Z
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2010/05/25
21:51 UTC
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numpy
Hi all
I would like to append a value at the end of my numpy.array
.
I saw numpy.append
function but this performs an exact copy of the original array adding at last my new value. I would like to avoid copies since my arrays are big.
I am using resize
method and then set the last index available to the new value.
Can you confirm that resize
is the best way to append a value at the end?
Is it not moving memory around someway?
Thanks AFG
oldSize = myArray,shape(0) myArray.resize( oldSize + 1 ) myArray[oldSize] = newValue
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