import graph3;

size(6cm,0);
currentprojection=orthographic(1,1,1);

bbox3 b=limits((-2,-2,0),(0,2,2));
aspect(b,1,1,1);

xaxis("$x$",b,RightTicks());
yaxis("$y$",b.X(),b.XY(),LeftTicks());
zaxis("$z$",b,RightTicks());