How to lift the X-axis on graph?

Let's f(x,y)=0 graph

ezplot('sin(x)*sin(y)*sin(x*y)-1/4',[0 pi -4 4])

But more convenient, because of symmetry, -- to lift abscissa axis up to y=0.

Maybe anybody have seen a way... but I think MATLAB hasn't tools (on contrary to Excel)

Answer 1

[Paulo Silva]

axescenter by Matt Fig