import graph3; size(0,200); size3(200,IgnoreAspect); currentprojection=orthographic(4,6,3); real x(real t) {return cos(2pi*t);} real y(real t) {return sin(2pi*t);} real z(real t) {return t;} path3 p=graph(x,y,z,0,2.7,operator ..); draw(p,Arrow3); scale(true); xaxis3(XZ()*"$x$",Bounds(),red,InTicks(Label,2,2)); yaxis3(YZ()*"$y$",Bounds(),red,InTicks(beginlabel=false,Label,2,2)); zaxis3(XZ()*"$z$",Bounds(),red,InTicks);