disp(['Points Pol Shift:' mat2str(sum(mt_pol_diff_idx))]);
disp(['Points Pol Shift:' mat2str(sum(mt_pol_diff_idx))]);
disp(['this is a test number: ' 12])

% Float and Array String Display
ar_fl_list = [1,2,3,4,5];
fl_index = 1.1;
fprintf('fl_index %.2f is not in [%s]\n', fl_index, num2str(ar_fl_list));
Undefined function or variable 'mt_pol_diff_idx'.

Error in fs_print (line 2)
disp(['Points Pol Shift:' mat2str(sum(mt_pol_diff_idx))]);