- pdf
the name of the leaf angle distribution functions. One of
"uniform", "spherical", "planophile", "erectophile", "plagiophile",
"extremophile", "ellipsoidal", "twoParamBeta".
- chi
a float, parameter of the ellipsoidal leaf angle distribution.
The ratio the ratio horizontal axis over vertical axis. See section "Leaf
Angle Ditribution functions" for details.
- mu
a float, parameter controlling the Beta distribution. See section
"Leaf Angle Distribution functions" for details.
- nu
a float, parameter controlling the Beta distribution. See section
"Leaf Angle Distribution functions" for details.