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grid3
This module, contributed by Philippe Ivaldi, can be used for drawing
3D grids. Here is an example (further examples can be found in
grid3.asy
and at http://piprim.tuxfamily.org/asymptote/grid3/):
import grid3; size(8cm,0); currentprojection=orthographic(0.5,1,0.5); defaultpen(overwrite(SuppressQuiet)); bbox3 b=limits((-2,-2,0),(0,2,2)); aspect(b,1,1,1); scale(Linear, Linear, Log); grid3(b,XYZgrid); xaxis(Label("$x$",position=EndPoint,align=S),b,RightTicks()); yaxis(Label("$y$",position=EndPoint,align=S),b,RightTicks()); zaxis(Label("$z$",position=EndPoint,align=(0,0.5)+W),b,RightTicks());