Setting up matlab scripting enviroment

[kristen jakubowski]

I am trying to set up matlab scripting. I have followed the instructions given, however I keep getting the error

>> configureOpenSim
Error using fopen
Invalid filename.

Error in configureOpenSim>edit_path_txt_file (line 89)
fopen(fileID,'%s\n',char(Cnew{1}{i}));

Error in configureOpenSim (line 56)
edit_path_txt_file(classFile,OpenSimJarPath)

any ideas how to resolve this issue?

Thanks
Kristen

[jimmy d]

Hi Kristen,

The copy of this file, distributed with opensim, reads

Code: Select all

 fprintf(fileID,'%s\n',char(Cnew{1}{i})); 

at line 89.

I replicated the error you're seeing by editing the file and changing fprintf to fopen.

Hope that helps,
-james

[kristen jakubowski]

Hi James,

When I make that change I still get the following errors,

Code: Select all

>> configureOpenSim
Error using fprintf
Invalid file identifier.  Use fopen to generate a valid file
identifier.

Error in configureOpenSim>edit_path_txt_file (line 89)
        fprintf(fileID,'%s',char(Cnew{1}{i}));

Error in configureOpenSim (line 56)
    edit_path_txt_file(classFile,OpenSimJarPath)

Im not sure how to resolve the issue.

Thanks
Kristen

[Dan Kritzer]

Have you had any luck Kristen? I'm trying to do the same and am getting the exact same error.

[kristen jakubowski]

No I haven't had any luck resolving the issue successfully.

Let me know if you do!

Thanks
Kristen

[jimmy d]

I haven't been able to replicate this issue. This may occur because you don't have admin privileges to edit the file. Perhaps check this first.

Saying that, it may be with the permissions used by fopen().

You can test by changing line 78;

Code: Select all

fileID = fopen(txtname);

to read;

Code: Select all

fileID = fopen(txtname,'r+');

let us know if that works.

-james

PS. Also, in the mean time, the instructions for setting up the environment manually are still on the confluence

[kristen jakubowski]

I was able to fix the problem by changing the admin privileges of my computer, the change you suggested did not work. however, changing the setting in the control panel was successful.

thanks
Kristen

[Sarah Roelker]

Kristen,

Can you be more specific about how you changed the admin privileges on your computer to resolve this error?

Thanks,
Sarah

[Wasim Malik]

In newer versions of Matlab, the java class directory paths should go into a file called javaclasspath.txt in your preferences folder (which you can find using 'prefdir' in Matlab). I believe the 'librarypath.txt' and 'classpath.txt' file structure is no longer supported by Matlab, as I get a warning in Matlab 2014a.
-Wasim

[kristen jakubowski]

Sarah where you able to get it to work?

If you can't get the script to run, you can follow the directions on setting up the environment manually, and that should work

Kristen