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

MATLAB ships with built in functions ind2sub and sub2ind. Please check the documentation of MATLAB.

Please note that in MATLAB the linear indexing is going down the rows and indexing starts with 1

Example: for a 3 x 3 matrix

1 4 7

2 5 8

3 6 9