I would like to draw 3D arrows in my plot3d plot using the rgl library as mentioned for example here.
But apparently arrows3d is not part of the package, is it deprecated or future music as
No vignettes or demos or help files found with alias or concept or title matching ‘arrows3D’ using fuzzy matching.
rgl (version 0.95.1470, available only on R-forge at the moment; see How do I install the latest version of rgl? for how to get it) has a function
arrow3d() modelled after the
heplots::arrow3d function, but expanded quite a bit.
It can draw arrows like the
heplots function (i.e. made up of line segments), or as flat polygons, or as extrusions of polygons, or as rotations of polygons. The
?arrow3d help example currently does this:
xyz <- matrix(rnorm(300), ncol = 3) plot3d(xyz) arrow3d(xyz[1,], xyz[2,], type = "extrusion", col = "red") arrow3d(xyz[3,], xyz[4,], type = "flat", col = "blue") arrow3d(xyz[5,], xyz[6,], type = "rotation", col = "green") arrow3d(xyz[7,], xyz[8,], type = "lines", col = "black") arrow3d(spriteOrigin = xyz[9:12,], col = "purple")
which produces this output:
Normally it draws just one arrow per call, but if you ask for 3D sprites (as in the
purple example) it can draw multiple copies of the same arrow.