Log scaling not applied

[srtaylor]

Log-Log scaling on currentpicture works for me as expected, but not on any other picture. E.g. this minimal example works as expected:
import graph;
scale(Log,Log);
size(200,IgnoreAspect);
real f (real x) {return x^2;}
draw(graph( f, 1, 16 ) );
xaxis("$x$",BottomTop,RightTicks);
yaxis("$y$",LeftRight,LeftTicks);

but the following code (which should given identical output) does not: log scale isn't applied, and the axis ticks are wrong:
import graph;
picture pic;
scale(pic,Log,Log);
size(pic,200,IgnoreAspect);
real f (real x) {return x^2;}
draw(pic, graph( f, 1, 16 ) );
xaxis(pic,"$x$",BottomTop,RightTicks);
yaxis(pic,"$y$",LeftRight,LeftTicks);
shipout(pic);

I need to get this working so I can draw multiple graphs on one picture. Have I done something subtly wrong here?

[oguibe]

Hello

Please replace
draw(pic, graph( f, 1, 16 ) );
by
draw(pic, graph( pic,f, 1, 16 ) );

O.G.

[srtaylor]

Thank you!