Four-dimensional contourf plot in Matlab

Please, find the attached .mat file. How can I create a 4D contourf plot of x1,y1,z1,Phi1? I am using

Contourf(x1, y1,z1,Phi1)

But it is not working. Please, help.

Answer 1

[Aquatris]

I do not think there is a way like you imagine but take a look at these function, in particular contourslice .