Can anyone give some pointers or examples how to visualize for example triple integrals in Matlab?

Let's say we have the following integral:

\int\int{\int_D{z dxdydz}}

where D is given by:

x^2 + y^2 \leq z^2
x^2 + y^2 + z^2 \leq 1
z \geq 0

How would you visualize that?