Python: Setting an element of a Numpy matrix

Question

I am a pretty new to python. I have created an empty matrix

a = numpy.zeros(shape=(n,n))

Now I can access each element using

a.item(i,j)

How do I set an index (i,j)?

Can Berk Güder · Accepted Answer · 2010-02-08 10:46:52Z

65

Here's how:

a[i,j] = x

answered Feb 8, 2010 at 10:46

Can Berk Güder

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Comments

YOU · Accepted Answer · 2010-02-08 10:52:25Z

11

Or

a.itemset((i,j),x)

answered Feb 8, 2010 at 10:52

YOU

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John La Rooy · Accepted Answer · 2010-02-08 10:48:22Z

3

Try this

a[i,j]=5

answered Feb 8, 2010 at 10:48

John La Rooy

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