Speed up for loop in Matlab

Question

I have the following for loop which makes my program runs very slow when the file size is very big. What is the best way to vectorize it.

I read d

Answer 1

This will do what you want

>> pc = str2double([data{:}].')
pc =
    0.1033   -0.2737    0.8570  221.0000  196.0000  174.0000  255.0000
    0.1054   -0.2731    0.8550  220.0000  195.0000  173.0000  255.0000
    ...
    0.1139   -0.2803    0.8490  221.0000  194.0000  172.0000  255.0000
    0.1117   -0.2829    0.8500  225.0000  200.0000  178.0000  255.0000

You can remove the last column and row (as appears to be done in your question) with

>> pc = pc(1:end-1, 1:end-1)
pc =
    0.1033   -0.2737    0.8570  221.0000  196.0000  174.0000
    0.1054   -0.2731    0.8550  220.0000  195.0000  173.0000
    ...
    0.1139   -0.2803    0.8490  221.0000  194.0000  172.0000