how to extract value from .mat file

J'ai un modèle Simulink où je récupère les valeurs d'une variable dans un fichier .mat en utilisant Tofile block.

J'ai créé un script pour pouvoir récupérer que la dernière valeur du fichier .mat donc j'ai utilisé la fonction load pour charger le fichier après je ne sais pas quelle fonction à utiliser pour pouvoir récupérer ma valeur.

[KSSV]

Approximate translation:

I have a Simulink template where I retrieve the values of a variable in a .mat file using Tofile block.

I created a script to be able to recover the last value of the .mat file so I used the load function to load the file after I do not know what function to use to be able to retrieve my value.

[Samah EL QASSAH]

thank you KSSV for the translation. I didn't notice that I express in frensh.

Answer 1

[Cam Salzberger]

Hello Samah,

It's not entirely clear to me what you are looking for. If you have a MAT file that contains an array, and you want only the last element of the array, you could do something like this:

load myMatFile.mat myArrayName
val = myArrayName(end);

If using load, it is generally good practice to specify which variables are being loaded. This allows the code to be more readable by seeing where variables originate from.

You can also use the matfile function to access the data within the MAT file, without explicitly loading all variables. This only works for numeric data, and is most efficient if the MAT file was saved with the v7.3 setting or argument.

m = matfile('myMatFile.mat');
val = m.myArrayName(end);

Hope this helps!

-Cam