% m4_indices.m - playing with Matlab indices

1:6

1:2:6

6:-1:1

a = 1:16

a(end-3:end)

ans([1 3])

a(2:5:16)

A = reshape(a,4,4)

A(2:5:16)

repmat(ans,6,1)

A(2:5:16) = [97 98 99]

A(2:5:16) = 0

A(:,2)

A(:,2) = []

find(A==0)

A(ans) = 15

find(A==15)

[I,J] = find(A==15)

A==15

A>15

find(mod(A,2)==0)

A(ans) = 100*A(ans)

A = rand(5,5)

A(5:4:21) = (1:5).^2

A(A~=round(A)) = 999