How to assign values in an identity matrix?

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Emanuele Joy
Emanuele Joy 2018-6-2
编辑： James Tursa 2018-6-2
Simple question, but say I have a 3x3 identity matrix:
I = eye(3)
I =
1 0 0
0 1 0
0 0 1
And I want to change the upper right two elements to, say, 2 and 4:
I =
1 0 2
0 1 4
0 0 1
Is there a function that will allow me to do this?

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James Tursa
James Tursa 2018-6-2
编辑：James Tursa 2018-6-2
For this specific question, simple indexed assignment:
I(1:2,end) = [2;4];
But what is your actual problem?

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