Looping through Files with For - Error or Bug?

Hi!

I have several files I need to edit, and I was trying to write a script to do that for me. I need to run several matlab scripts to get different variables in the workplace, and then run a particular matlab function on those variables.

So this is the code I tried to use:

for n=1:9
    filename = ['N' int2str(n) '.dat';
    bears = ['/Users/DMSenter/Dropbox/REU/Project6/mainparameters' int2str(n) '.m'];
    run(bears)
    run('/Users/DMSenter/Dropbox/REU/Project6/IGLE.m'(kernel,parameters,flags))
end

The different script files are named N1.m,N2.m, N3.m,...,N9.m. The output is supposed to be saved in an equivalent dat file (this is why I reset the filename each time). My problem though is as follows: the line

      bears = ['/Users/DMSenter/Dropbox/REU/Project6/mainparameters' int2str(n) '.m'];

Always returns an error:

Error: File: shortcut.m Line: 17 Column: 11 The expression to the left of the equals sign is not a valid target for an assignment.

When I run just this line in the console/interpreter however, it works as I'd like it to work. I tried several different variable names (bears is just the last one I tried). I always get this error. Why?

In regards to calling the script-file, I know the run command works. Will it work the way I wrote for calling a function? Something like

function [Xpath,Xend,acf_x,t]=IGLE(kernel,parameters,flags)

Thanks for the help!

- Mike

Answer 1

[Image Analyst]

Instead of

filename = ['N' int2str(n) '.dat';

try to include the trailing bracket:

filename = ['N' int2str(n) '.dat'];

[Image Analyst]

Or better yet, use sprintf:

filename = sprintf('N%d.dat', n);