/usr/share/doc/asymptote-doc/src/logimage.asy is in asymptote-doc 2.37-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | import graph;
import palette;
size(10cm,10cm,IgnoreAspect);
real f(real x, real y) {
return 0.9*pow10(2*sin(x/5+2*y^0.25)) + 0.1*(1+cos(10*log(y)));
}
scale(Linear,Log,Log);
pen[] Palette=BWRainbow();
bounds range=image(f,Automatic,(0,1),(100,100),nx=200,Palette);
xaxis("$x$",BottomTop,LeftTicks,above=true);
yaxis("$y$",LeftRight,RightTicks,above=true);
palette("$f(x,y)$",range,(0,200),(100,250),Top,Palette,
PaletteTicks(ptick=linewidth(0.5*linewidth())));
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