Linear indexing in symmetric matrices

Question

We can access matrices using linear indexing, which follows this pattern

0 1 2

3 4 5

6 7 8

It\'s easy to get the i,j coordinates for this cas

Answer 1

Loop through your rows, keeping track of the offset of each one and the starting index for each:

offset = 0;
startOfRow = 0;
for(i=0;i

I don't know Matlab, so it's just pseudocode, but it should work. As horchler says, make sure your indexing is correct. I used i,j here as you had it in your example, but it just feels weird to me.