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glevellevels) |
| See Also | gplot , and mesh or surface |
z
at which curves plotted with the "levels" version of
gplot
,
mesh or surface
change color,
where levels
is an integer, real, or double-precision column vector
that is
strictly monotone increasing
.
The first color in the
current color sequence
is used where z is less than or equal to
the first element of levels,
the second color is used where z is between
the first and second elements, and so on.
If there are more levels than there are colors in the
current color sequence, the sequence will "wrap around"
to the first color after using the last color in the sequence.
ginit
y = {-1, 0, 1}
x = y
z = y
levels = {-.5, 0, .5}
colors = {"red", "black", "green", "blue"}
glevel(levels)
gcolor(colors)
gplot(x, y, z, "solid", "levels")
O-Matrix will generate a plot that changes color at
z = -.5, z = 0, and z = .5.
(Note that 4 colors are plotted, but there are only 3 color changes.)