MATLAB: Is the ability to use ADDPATH in the deployed application available in MATLAB Compiler 4.11 (R2009b)

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I am writing an application that utilizes the ADDPATH function, thus adding a directory to the MATLAB search path. When I run this application in MATLAB, it responds consistently. However, when I compile this application, the compiled version does not seem to recognize that the path has been added.

Best Answer

In general, a compiled application should avoid MATLAB commands that directly access or modify MATLAB's internal paths, i.e. the MATLAB path and the MATLAB Java class path. These functions are: ADDPATH, CD, JAVAADDPATH, JAVACLASSPATH, JAVARMPATH, PATH, RMPATH, SAVEPATH.

To learn more about Path Management in Deployed Applications, please refer to the following article:

http://blogs.mathworks.com/loren/2008/08/11/path-management-in-deployed-applications/

Related Solutions

MATLAB: Does the compiled application fail to run when some directories were specified as relative paths at compile time using MATLAB Compiler 4.0 (R14)

This bug has been fixed in Release 2006a (R2006a). For previous product releases, read below for any possible workarounds:

There is a bug in MATLAB Compiler 4.0 (R14) in the way that relative paths are handled during compilation.

To work around this issue, all paths should be specified as full paths. Several MATLAB commands may be of interest in constructing these paths: PWD, which returns the current directory, FILESEP, which returns '/' or '\' depending on the operating system, and the FULLFILE command, which builds a full directory path from individual subdirectories.

For example, the current directory and any subdirectories can be added as full paths with the following command:

addpath(genpath(pwd));

MATLAB: Can I use ADDPATH in a compiled application from MATLAB Compiler 4.10 (R2009a)

This change has been incorporated into the documentation in Release 2011a (R2011a). For previous releases, read below for any additional information:

It is not recommended to use ADDPATH in a deployed application. As a workaround, use paths relative to MATLABROOT or CTFROOT.

For example, change code like this:

addpath(my/data/directory)
fp = fopen('data.file', 'r');

To code like this:

fp = fopen(fullfile(ctfroot, 'my', 'data', 'directory', 'data.file'));

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Related Solutions

MATLAB: Does the compiled application fail to run when some directories were specified as relative paths at compile time using MATLAB Compiler 4.0 (R14)

MATLAB: Can I use ADDPATH in a compiled application from MATLAB Compiler 4.10 (R2009a)

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