MATLAB: How to programmatically change the Default Data Package for a Simulink signal/parameter from ‘Simulink’ to ‘mpt’

datadefaultmptpackageparametersignalsimulink

In prior versions of MATLAB I have used the command:

set_param(0, 'DefaultDataPackage', 'mpt');

to set the default data package to 'mpt', as specified by our process. I noticed that command does not work in R2016a and the release notes indicate that it has been removed. They mention ways to set the package, but the methods do not appear to be sticky, i.e. I must set them every time a new MATLAB session is opened. Additional searches of the help documentation have been fruitless.

What is the new way to programmatically set the default data package?

Best Answer

Unfortunately, the "set_param(0, 'DefaultDataPackage', 'mpt')" command has been deprecated as of MATLAB R2016a. Henceforth, the default data package has to be manually set using Model Explorer as described here:

https://www.mathworks.com/help/releases/R2016a/simulink/release-notes.html

-> Data Management -> Functionality being removed or changed

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MATLAB: How to modify the model callback functions programmatically

You may use the "set_param" function.

Here is the example code about how to change the 'InitFcn' programmatically using one of our shipped example 'vdp.slx':

>> vdp
>> set_param('vdp','InitFcn','a = 2;')

>> vdp
>> set_param(gcs,'InitFcn','a = 2;')

Please reference our documentation page for more details about the 'set_param' function and Model Callbacks:

https://www.mathworks.com/help/simulink/slref/set_param.html

https://www.mathworks.com/help/simulink/ug/model-callbacks.html#btoznm0

MATLAB: How to change the directory the support packages get installed in

When installing support packages, the root directory is set to a default location for your specific system.

For Windows, the default root directory is :

R2016a or Older

'C:\MATLAB\SupportPackage\<release>'

R2016b or Newer

'C:\ProgramData\MATLAB\SupportPackages\<release>'

where <release> is your specific MATLAB release.

If the default directory already exists and is not empty, the root directory becomes 'C:\MATLAB\SupportPackages\<release>_1'.

For Unix, the default root directory is:

'/home/user/Documents/MATLAB/SupportPackages/<release>'

where <release> is your specific MATLAB release.

If the computed default directory already exists and is not empty, it becomes '/home/user/Documents/MATLAB/SupportPackages\<release>_1'.

You can change the location if your application requires a custom directory for installation. You must have administration privileges and be able to write to this custom folder. In order to set the support package root and verify the change, follow this example:

Note: You must have administration privileges for the custom folder you specify.

matlabshared.supportpkg.setSupportPackageRoot('C:\MATLAB\CustomSupportPackageRoot')
matlabshared.supportpkg.getSupportPackageRoot()
ans =
C:\MATLAB\CustomSupportPackageRoot

When setting the support package root, savepath is called to add the location to the MATLAB search path. To ensure the path is loaded correctly, start MATLAB, run the setSupportPackageRoot function, and then restart MATLAB.

Best Answer

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MATLAB: How to modify the model callback functions programmatically

MATLAB: How to change the directory the support packages get installed in

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