How can I use a data file as input to a function?

I am trying to write a function that will allow me to input a .dat file, which will then be read as the input for the function.

The code I have tried using is:

      function beam_analysis(obj)
      clear all
      fid=fopen(obj,'r');
      Title=fgets(fid);

Where the command would be:

      beam_analysis('input.dat')

This is returning the error:

      ??? Reference to a cleared variable obj.

      Error in ==> beam_analysis at 4
      fid=fopen(obj,'r');

Is there a better way to go about this? FYI - the input file is just a bunch of tables, in case you know of a better way of inputting this data. Thanks!

Answer 1

[Matt Fig]

Why oh why would you put a 'clear all' as the first line of a function?? Functions have their own workspace, so the only variables they see are those you pass in and those created inside the function....

Calling 'clear' inside a function is completely unnecessary and, as you can see, troublesome. Remove this line and you will be on your way.

[Jeremy]

Wow, I feel foolish. That was leftover from when this was a script file (trying to convert it to a function) and I totally wasn't paying attention. That fixed the problem, thanks!

[Matt Fig]

No worries! Glad you got it fixed. I am also glad you didn't do that on purpose!