
30 Accelerating MATLAB
®
Performance
Code lines that have not run at all are colored gray and their line number is not hyper-
linked. It is important to check such segments to determine whether the code should really
have been skipped, or in fact should have run, indicating an algorithmic bug. The line
numbers of comment lines, colored green, are also not hyperlinked.
A blue value next to the line number indicates the number of times that each particular
line was ran. In deeply nested loops, this value can be huge. Seeing the values associated
with each source-code line helps us identify cases where loops can be optimized to reduce
the number of ...