Run a script file multiple times and save variable values to array

I have a script file that I would like to run 50 times. Each time the script file is executed I would like certain variables generated by the script file to be saved in an array I have created in the driver file. I have tried creating a driver file with a for loop and using the control variable for the for loop to index the array entries, but Matlab seems to not let me access the control variable (or any other variables in the driver file). Is there an easy way to do this? I am familiar with diary but the text output is tedious to manually convert to an array.

Answer 1

[Jan]

What is a "driver file"? "Matlab seems to not let me access the control variable" - what does this mean? What do you observe? Which code do you try?

It is easy actually:

% YourScript.m
% Your script (prefer functions for a clean programming style!)
a = rand

and the main function for the loop:

function yourLoop
result = zeros(1, 50);
for k = 1:50
    run('YourScript')
    result(k) = a;
end
end

[Evan Scope Crafts]

I was trying to do something like this:

trials = 50;
Times = zeros(trials,3);
for k=1:trials
    ResNet_C2F
    Times(k,1) = time1
    Times(k,2) = time2
    Times(k,3) = time3

but it would throw an error on the Times(k,1) = time1 line because it said there was no variable k. I didn't realize you had to add the word run, thank you you for your help!!

[Evan Scope Crafts]

Actually, for whatever reason this is still not working. I tried

function [Times,Results,Validation] = ResNet_C2F_Driver1(trials)
Times = zeros(trials,3);
Results = zeros(trials,6);
Validation = zeros(trials,3);
for k=1:trials
    run('ResNet_C2F')
    Times(k,1) = time1;
    Times(k,2) = time2;
...etc 

and got the error "Reference to a cleared variable k.". Do you know why this is?

[Walter Roberson]

Get rid of all "clear" statements you have in your code.

[Evan Scope Crafts]

Wow can't believe I didn't catch that. Thanks for helping an undergraduate out

[Jan]

@Evan: clear is rarely useful in Matlab, but it causes troubles frequently.