MATLAB: How to convert first cell value into zero

Question

Hello

I have a array of numbers but the first cell is always a string like below. Is there way that I put ''0" instead of "theta\phi[rad]"? Then, I can do analysis 🙂

theta\phi[rad] 0 0.01 0.02

0 -0.15 -0.17 -0.14

0.2 0.19 -0.13 -0.11

Answer 1

 cell_array(cellfun(@isstring, cell_array)) = {0}