load data from file using script in octave

Question

I tried looking online for this and can’t find what I am looking for. I am trying to write a script to do something I do a lot. I would like to be able to pass in, as the command argument, the name of a file. Then my script goes off and plots it the way I want. So I need to have a character string as the input to the script. Furthermore I would like to add a check and bail if the input is not a valid character string.

So I want to do something like this… (much appreciated)

Function retval = load_3d(filename)       
    retval = 1;
    if( !(filename is character string)) // or better check if it is a CSV file :)
             retval = 0;
             Return;
    Endif

    Bla bla
    .
    .
    . 
endfunction

carandraug · Accepted Answer · 2013-01-09 04:37:01Z

2

You want to use the functions ischar, exist and csvread.

function status = load_3d (filename)
    status = false;
    if (ischar (filename) &&
        (exist (filename, "file") && ! exist (filename, "dir")))
        status = true;
        data = csvread (filename);
        ## do stuff with data
    endif
endfunction

Note that a directory is just a special type of file, so exist (filename, "file") will return true for directories.

answered Jan 9, 2013 at 4:37

carandraug

13.1k1 gold badge28 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

load data from file using script in octave

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related