data processing of the .mat result from Dymola simulation

Question

I am trying to do data processing with the .mat result from Dymola. My plan is to use MATLAB. I got a few questions about the .mat file:

1. If I load the .mat file int

Answer 1

Regarding the file format, note that there is a utility to convert the MAT files to a simple HDF5-based format, if that makes post-processing easier. There are scripts for both MATLAB and Python to read such files (extension SDF).

Answer 2

You can get an explanation for the basic data-structure of the result file if you generate a textual result file (it might also be somewhere in the documentation), and the most relevant part is:

 Matrix with 4 columns defining the data of the signals:

 dataInfo(i,1)=    j: name i data is stored in matrix "data_j".
                      (1,1)=0, means that name(1) is used as abscissa
                      for ALL data matrices!

 dataInfo(i,2)=    k: name i data is stored in column abs(k) of matrix
                      data_j with sign(k) used as sign.

And to simplify things: there are at most two data-matrices, and the abscissa used for ALL data matrices is "Time".

2. You cannot currently directly output mat-files in specific units. However, you can output csv-files using specific units.