3D contour and 3D surface

t=%pi*(-10:10)/10;
deff('[z]=surf(x,y)','z=sin(x)*cos(y)');
rect=[-%pi,%pi,-%pi,%pi,-5,1];
z=feval(t,t,surf);
contour(t,t,z,10,35,45,'X@Y@Z',[1,1,0],rect,-5);
plot3d(t,t,z,35,45,'X@Y@Z',[2,1,3],rect);
xtitle('plot3d and contour ',' ',' ');