read multiple mat files with Simulink

Question

SS 2022-8-8

回答： Suman 2024-7-26

I want to load multiple data with Simulink.

I know there is a from file block in Simulink.

But from file block can read only one data.

I want to read multiple data,so I think to use MATLAB Function block.

Please tell me a solution.

Answer 1

Suman 2024-7-26

Yes since you want to load multiple .mat files, it is best to use a MATLAB function block.

Here is a simple example code:

function data = readMatFiles()

matFiles = {'file1.mat', 'file2.mat', 'file3.mat'};

%an empty array or structure to hold the data

data = [];

for i = 1:length(matFiles)

fileData = load(matFiles{i});

if isempty(data)

data = fileData;

else

data = [data; fileData];

end

You should be careful about few points when using MATLAB Function block to load data:

Data Format: Ensure that the data format in the .mat files is consistent and compatible with how you intend to use it in Simulink.
File Paths: If your .mat files are not in the current working directory, provide the full path to each file.
Performance: Loading multiple .mat files can be time-consuming if the data is very large. You might consider loading the data into model workspace at model load time and then using the data as required.