How can i changethe value at a position in an array

Hello, i wanted to cahnge some values in an array but could not do it, can you help me? Thanks in advance.

k=zeros(201);

k(0)=0;

k(101)=1;

k(201)=2;

Answer 1

[Star Strider]

The ‘k’ array is a (201x201) array of zeros. The code likely works correctly, however using a single index into an array uses linear indexing. To understand the row and column assignments for element 101 and 201, use the ind2sub function:

k = zeros(201)

k = 201×201

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

k(101)=1;
[r1,c1] = ind2sub(size(k), 101)

r1 = 101

c1 = 1

k(r1,c1)

ans = 1

k(201)=2;
[r2,c2] = ind2sub(size(k), 201)

r2 = 201

c2 = 1

k(r2,c2)

ans = 2

See the documentation on Matrix Indexing for details. .