If I want to mask some part of the plot (for example points located inside unit disk) I can use the following code:
[X,Y] = meshgrid(-6:.1:6) ;
Is it possible to include the masking commands directly into anonymous function definition in order to avoid definition of auxiliary variable Z (lines with (*) ).
In my first attempt I followed the pattern of defining piece-wise continuous functions. Something like this
g = @(t,r) (r<2) .* (r .* cos(t) ) + (r>=2) .* NaN ;
figure, surfc(X,Y, g(T,R) )
However, this code does not work because function g will always return NaN. How can it be done?