How to save the last value of a simulation in a .mat ?
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Hello,
I'm having some troubles with something that looks easy : I would like to save the last value of a Simulink simulation to be stored in a .mat file without passing by a .m script. Kind of like a mix between the to-File block and the "Limit data point to last" option of the scopes, to Workspace, etc...
I know that the To-File block is able to log all the simulation but i really only need the last step !
Thank you in advance !
Aurelien
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Answers (1)
Sebastian Castro
on 8 Mar 2015
Hello Aurelien,
Have you looked into saving a SimState? While the format might be different, it is a functionality we provide for saving data at the end of a simulation (presumably to use at the beginning of another simulation).
- Sebastian
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Sebastian Castro
on 9 Mar 2015
If you want this to work after auto code generation, I guess you could use the Configuration Parameters as shown below:
1. In the Data Import/Export pane, you can enable whatever type of logging that will get you your data. Also, check "Limit data points to last" and change the value to 1 such that you only get the last data point out.
2. In the Code Generation > Interface pane, check the "Enable MAT-File Logging" box. This should be available for both "grt.tlc" (Simulink Coder) and "ert.tlc" (Embedded Coder).
Note that the MAT-file logging works with the following blocks (from the documentation).
Enable MAT-file logging . When you select this option, the generated code saves to MAT-files simulation data specified in one of the following ways:
- Configuration Parameters > Data Import/Export, Save to workspace subpane (see Data Import/Export Pane)
- To Workspace blocks
- To File blocks
- Scope blocks with the Save data to workspace parameter enabled
- Sebastian
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