How to use variables as filename when saving to a .txt file?

Hi.

I have a program with many variables. I would like to use some of the variables as the filename when outputting to a .txt file. For example say I have variables:

Date = 22052014;
Time = 1422;
Machine = Alpha;

And I wish the filename to be:

Alpha_22052014_1422.txt

How can I do this? It's easy with the 'saveas' function but that is for images only to my knowledge and fopen doesn't appear to allow the same formatting.

Any help appreciated.

Answer 1

[Sean de Wolski]

I assume

Machine = 'Alpha'

Where Alpha is a string rather than variable. The easiest way is with sprint

Date = 22052014;
Time = 1422;
Machine = 'Alpha';

fn = sprintf('%s_%i_%i.txt',Machine,Date,Time)

[Iain]

the functions you might want to use to write text files are the basic ones:

fopen, fprintf, fclose, etc.

But csvwrite might be up your street.

[Ross]

Thanks guys that solved it for the filename. :)