How to add new rows in an existing .mat file?

Hello. I am trying to save the texture features that I extracted from an image in a .mat file and set it as my training dataset. I wanted to save each and every texture features that I extracted everytime I process an image to that same .mat file. How can I do it? Or do you have any code that can help me to get it? I read about"append" but it replaces the values with same variables. Please, I appreciate your help on this one.

Best regards!

[Stephen23]

"I read about"append" but it replaces the values with same variables"

Unfortunately the append option is simply very badly named. It would have been better called ensureExists or overwrite.

[Abhishek Chakraborty]

I have been facing the same problem. Using the code :

try load db; F=[F c]; db=[db;F]; save db.mat db

catch db=[F c]; save db.mat db

end

Every time I open a new image, the values get overwritten. Please make a correction in this so that new rows are added.

Answer 1

[Ahmet Cecen]

Take a loot at this: MATFILE.

This is actually a function, and you can modify most variables in a matfile like you would in the workspace, without loading them entirely to RAM.

Answer 2

[chiraz Ajmi]

Hello , i am facing the some problem can some one help me i want to save each time the extracted features from the image in a file and set it as the training dataset .