Simulink does not support loading the input data in file

Hi,

I have created a matrix called PMAX.mat consisting of samples in the first row and values in the second row.

For example: 1 2 3 4 5 6 7 .... samples 3 2 1 5 6 4 3 .... values

I want to use this matrix for a from file block in my Simulink simulation.

Now I get always the same error message:

Simulink does not support loading the input data in file 'PMAX.mat'. For data saved using MAT file versions prior to 7.3, Simulink can only load two-dimensional arrays consisting of one-dimensional, double, noncomplex samples. To load data of any other type, complexity or dimension, use a timeseries object and save the file using MAT file version 7.3 or later. For example, use: 'save file_name -v7.3 timeseries_object'.

My preferences in Simulink are: 1. Steps from 1 to 525600 2. Fixed step size 1 3. Solver: discrete

Thanks for your help.

Philipp

Answer 1

[TAB]

From File block not supports Version 7.0 or earlier mat-file. Save your create a mat-file with the same date in the Version 7.3.

In the base workspace run below commands

clear all;
load('PMAX.mat');
delete('PMAX.mat');
save('PMAX.mat','-v7.3');

Run the simulation again.

[K E]

Very useful!

[bushra sultana]

how can we see the values in mat file on simulink... i used display block but it doesn't show the exact values...instead display the complete values from 0 to 255 for uint8 data type

Answer 2

[Philipp]

Perfect, no it works!

Thanks!

[Mohd Noor]

An example that works. The file name is "data.mat"

t = [ 1 2 3 4 5 6 7 8 9 10]; v = [1.123 1.125 1.235 1.443 1.135 1.123 1.125 1.235 1.443 1.135]

noor = timeseries(v,t);

save('data.mat','noor', '-v7.3');

Answer 3

[Christian]

I had the same problem.

I had simply overlooked, that some of my value types were single.

But as i know know, it can only handle double typ.

So a typecast to double solved my problem in combination with the '-v7.3'-attribute.

Something like

PMAX=double(PMAX);

Answer 4

[jessupj]

It seems like there is also a problem with broadcasting between column and row vectors even after saving -v7.3 and converting to double.

Simulink can only load two-dimensional arrays or timeseries objects. 
The array must consist of one-dimensional, double, noncomplex samples.

Calling X=X(:) before saving worked in my case (r2019a) and didn't require saving to -v7.3 or double conversion.