Loading text files using variable names

Hi, Is there any way of loading a text file (say mydata.txt) using a variable name? What I need to do is allow the user to input the name of a text file, which contains an array, in the previous command, and then for the program to load the file with name and store it into another variable. Thanks in advance.

Answer 1

[Arnaud Miege]

filename = input('Enter the file name (without the txt extension)','s');
fid = fopen([filename '.txt']);
C = textscan(fid, <format to be used>);
fclose(fid);

HTH,

Arnaud

[Kingsley Ripley]

At the risk of sounding stupid, what conversion specifier would I then use to load a 3x3 numeric array?

[Arnaud Miege]

It depends on what data type it is and how the data is delimited. Assuming a simple text file with:

5.2 5.3 5.4

6.5 6.6 6.7

7.8 7.9 8.0

You'll need something like:

C = textscan(fid,'%f %f %f','CollectOutput',1);

HTH,

Arnaud