x = X(training(c,1),:);

What is the meaning of the function X()? How is it used?

[Stephen23]

Duplicate question:

http://www.mathworks.com/matlabcentral/answers/281664-meaning-of-x-x-training-c-1

[Stephen23]

@AngXuman Xarma: this and your other question indicate that you need to learn some very basic MATLAB concepts. You should start by doing these tutorials (which will also answer both of your questions!):

http://www.mathworks.com/help/matlab/getting-started-with-matlab.html

and read this:

http://www.mathworks.com/matlabcentral/answers/228557-experts-of-matlab-how-did-you-learn-any-advice-for-beginner-intermediate-users

Answer 1

[Stephen23]

X is not a function, it is a variable.

I explained this in my answer to your other question:

http://www.mathworks.com/matlabcentral/answers/281664-meaning-of-x-x-training-c-1