plot function with matlab

[Bou]

Hello,

If we have a function like this

f(x,y)

ans we want to plot it with matlab with a condition that y>x else f(x,y) is indifined

how we can do it?

10x

 

[andre_luis]

Not clear whether x is the domain of the f function, or if you're considering another implicit variable, such as t for instance representing the time line, therefore I'm assuming the 2^nd case.

You can use the y>x constraint to create another curve ( e.g: z ) which contains the same value of f. You will now plot z(x,y) instead of f(x,y), but setting the range of the plot function as the size of the z funcion, such as something like that ( not tested ) :

axis([ min(t) max(t) min(z) max(z)])