How do I create a matrix block of 128x128 for the matrix below whilst wiping away the E value ( E=0) only in blocks 28 and 48.

E = 29000;

A = 25;

Ix = 39;

Iy = 21;

T = [ E*A 1 1 1; 1 E*Ix 1 1; 1 1 E*Iy 1];

Answer 1

[Matt J]

only in blocks 28 and 48.

Are 28 and 48 linear matrix indices, here? If so, then,

E = 29000;
A = 25;
Ix = 39;
Iy = 21;

T = [ E*A 1 1 1; 1 E*Ix 1 1; 1 1 E*Iy 1];

T0= [ 0 1 1 1; 1 0 1 1; 1 1 0 1];

M=repmat({T},128,128);

M([28,48])={T0};

M=cell2mat(M);