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Get Matlab Startup directory

Asked by Markus Aigner on 17 Apr 2019
Latest activity Commented on by Markus Aigner on 23 Apr 2019
Hello,
I use a batch script to start Matlab and set the startup directory via the -sd switch.
Example:
:: Matlab startup directory
set STARTUP_DIRECTORY=%USERPROFILE%\Documents\Matlab\R2019a_x64\MyDirectory
:: Matlab Executable
set MATLAB_EXECUTABLE=%ProgramFiles%\MATLAB\R2019a\bin\matlab.exe
:: start Matlab with specified startup directory
call "%MATLAB_EXECUTABLE%" -sd "%STARTUP_DIRECTORY%"
I use this procedure because I work with multiple Matlab configurations (Java classpath, Java library path, Matlab path) in each of the startup directories.
I have a setup script which collects all required information and stores the 3 Matlab configuration files (javaclasspath.txt, javalibrarypath.txt, pathdef.m) in the startup directory. To get that directory in the current Matlab session i used the following (dirty but working) code:
char(java.lang.System.getProperty('user.dir'));
But since Matlab 2019a, this line always returns:
'C:\Users\<UserName>\Desktop'
I have also tried the userpath command but unfortunately, this always returns the same directory, no matter which directory is specified as startup directory:
'C:\Users\<UserName>\Documents\MATLAB'
Maybe someone has got a solution or workaround for my problem?
Thank you,
Markus

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Products


Release

R2019a

2 Answers

Answer by Ben Cunningham on 17 Apr 2019
Edited by Ben Cunningham on 17 Apr 2019

You can use :
>> pwd
to return the present working directory in MATLAB.
You define your procedure as :
  • I start Matlab with the modified startup directory (-sd switch)
  • Now I change to another directory where my software is located e.g. D:\MyProject\MySoftware
  • In this directory I execute a setup M script
Why not :
  • I start Matlab with the modified startup directory (-sd switch)
  • I save the startup directory to a variable
startDir = pwd
  • Now I change to another directory where my software is located e.g. D:\MyProject\MySoftware
  • In this directory I execute a setup M script
Your setup M script then uses the variable 'startDir' to copy the files as required.

  3 Comments

The software is not only used by me but can be used by other people who use Matlab, too.
In this case I don't have the possibility to execute the mentioned command.
The people get our software, create a startup directory for this software (to have a clean Matlab configuration and/or to not mess up their current configuration), switch to our software directory and execute the setup script.
When they re-start Matlab with the modified startup path, the Matlab environment is prepared to use our software.
It seems to me that if the user is creating this start up directory, then why not use
startDir = uigetdir
in your script and let the user navigate to it.
Additionally, they could create the directory at the same time in the UI. I know it's not exactly what you're after.
Thank you for your quick response and some ideas for an alternative setup procedure.
I may think about your suggested solution or a similar one (e.g. giving the user the possibility to pass the "configuration directory" as optional argument for the setup script).
Maybe it would be a nice feature for future releases to get this user defined startup directory via the userpath command?

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Answer by Markus Aigner on 17 Apr 2019
Edited by Markus Aigner on 17 Apr 2019

Thank you but unfortunately I cannot use this solution.
My procedure is as follows:
  • I start Matlab with the modified startup directory (-sd switch)
  • Now I change to another directory where my software is located e.g. D:\MyProject\MySoftware
  • In this directory I execute a setup M script
This setup script generates the Matlab configuration files which shall be copied into the startup directory (for the next Matlab startup).
Because I have already changed the current working directory (in this case to D:\MyProject\MySoftware), I cannot use the pwd command.

  1 Comment

I've updated my answer - I think this does what you need?

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