A volume plot with
volume shows several partially transparent isosurfaces for volume rendering. The API of
volume is close to the one of
isosurface. However, whereas isosurface plots show all surfaces with the same opacity, tweaking the
opacityscale parameter of
volume results in a depth effect and better volume rendering.
Basic volume plot
In the three examples below, note that the default colormap is different whether isomin and isomax have the same sign or not.
using PlotlyJS data = range(-8, stop=8, length=40) X, Y, Z = mgrid(data, data, data) values = sin.(X .* Y .* Z) ./ (X .* Y .* Z) plot(volume( x=X[:], y=Y[:], z=Z[:], value=values[:], isomin=0.1, isomax=0.8, opacity=0.1, # needs to be small to see through all surfaces surface_count=17, # needs to be a large number for good volume rendering ))