What does 'y:' stand for in plot command?

I need to debug a piece of code and I can't understand the 'y:' attribute at the end of the line. Can someone point out what it does?

 if true
    plot(<a 99X1 matrix>,<a 99x1 matrix>,'y:');
  end

[Stephen23]

" I can't understand the 'y:' attribute at the end of the line. Can someone point out what it does?"

The LineSpec is explained in the plot documentation. Reading the documentation is how you can learn how MATLAB functions work.

Answer 1

[Birdman]

It means a dotted yellow line. For that, you may check the documentation of plot command. That third input argument decides the line style, marker and color:

Plot