#####Example 1################# a=rand(2,2) b=a b=ones(size(a)) a #####Example 2######################### a=rand(2,2) b=a b[1:4].=1.0 a Q- Why do we get different results ? In example 1, “a” is not equal to “b”. But in example 2, “a” is equal to “b”. My understanding was, in example…

Your second assignment in Example 1 (b = ones(size(a))) means that b no longer refers to the same matrix that a does. In Example 2 on the other hand, you are changing the elements of the matrix that b refers to, which a also refers to.

Modifying elements of a Matrix

New to Julia

DNF March 4, 2022, 6:27am 4

Or, more conveniently,

b .= 1.0

Both of your examples needlessly create and allocate an entire new matrix on the right hand side of the assignment.

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Modifying elements of a Matrix

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