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3.1.7 plfp
A third variant of the plf command is plfp, which plots an arbitrary
list of filled polygons; it is not limited to quadrilaterals. While
pli is a special case of plf, plfp is a generalization of plf:
Here z is the list of colors, and x and y the coordinates of the corners
of the polygons. The fourth argument n is a list of the number of
corners (or sides) for each successive polygon in the list. All four
arguments are now one dimensional arrays; the length of z and n is the
number of polygons, while the length of x and y is the total number of
corners, which is sum(n). Again, plfp draws the polygons in the
order of the z (or n) array.
As a special case, if all of the lengths n after the first are 1, the
first polygon coordinates are taken to be in NDC units, and the
remaining single points are used as offsets to plot numberof(n)1
copies of this polygon. This arcane feature is necessary for the plmk
function.
As of yorick 1.5, z may also be a 3 by sum(n) array of type char
in order to make a true color filled mesh. The first index of z is
(red, green, blue), with 0 minimum intensity and 255 maximum.
