Plot and fill area enclosed by n lines using Octave\Matlab

Question

Lets suppose I have n curves, which together enclose some region. How to plot the curves and fill in the region they enclose using Octave/Matlab? Below is example for 3 curves (

Answer 1

You can use the function fill.

See the matlab documentation there:

http://www.mathworks.fr/help/techdoc/ref/fill.html