In this followup to our coverage of the
release of
gnuplot 5.4, we look more deeply at
one of the new features: voxel plots. We only
briefly touched on these plots in that article, but they are the most conspicuous addition in
this release of
the free-software graphing tool.
Voxel plotting provides multiple ways to visualize 3D data, so it is worth
looking at this new plot type in more detail.

Source: LWN.net – [$] Voxel plotting with gnuplot 5.4