import palette; 
import graph3; 

size3(8cm,8cm,3cm,IgnoreAspect);
size(8cm,0);

triple camera=(36,32,23),
       up=(-0.03,-0.015,0.015),
       target=(0.066,-0.49,-0.26);
currentprojection=orthographic(camera,up,target);

limits((-5,-5,-1),(5,5,1)); 

xaxis3(Label("$x$",MidPoint,align=Y-Z),
       Bounds(),
       OutTicks(scale(.7)*Label(),Step=2,step=.2,pTick=black,ptick=gray),
       p=blue); 
yaxis3(Label("$y$",MidPoint,align=X-Z),
       Bounds(),
       OutTicks(scale(.7)*Label(),Step=2,step=.2,pTick=black,ptick=gray),
       p=blue); 
zaxis3(Label("$z$",MidPoint,align=X-Y),
       Bounds(),
       OutTicks,
       p=red); 

real f(pair z) {return sin((abs(z))^2/3);}

surface s=surface(f,(-5,-5),(5,5),50,50);

s.colors(palette(s.map(zpart),Rainbow())); 
draw(s,meshpen=blue);