Syntax:
... {linecolor | lc} {<colorspec> | <n>} ... {textcolor | tc} {<colorspec> | {linetype | lt} <n>}
where colorspec
has one of the following forms:
rgbcolor "colorname" rgbcolor "#RRGGBB" rgbcolor variable # color is read from input file palette frac <val> # <val> runs from 0 to 1 palette cb <value> # <val> lies within cbrange palette z variable # color index is read from input file
The "n
" is the linetype number the color of which is used, see test (p.
).
"colorname" refers to one of the color names built in to gnuplot. For a list
of the available names, see show colornames (p. ).
"#RRGGBB" is a hexadecimal constant preceded by the "#" symbol. The RRGGBB
represents the red, green, and blue components of the color, each on a scale
from 0 - 255. For example, magenta = full-scale red + full-scale blue would
be represented by #FF00FF, which is the hexadecimal representation of
(255 16) + (0
8) + (255).
The color palette is a linear gradient of colors that smoothly maps a
single numerical value onto a particular color. Two such mappings are always
in effect. palette frac maps a fractional value between 0 and 1 onto the
full range of the color palette. palette cb maps the range of the color
axis onto the same palette. See set cbrange (p. ). See also set colorbox (p.
).
You can use either of these to select a constant color from the current
palette.
"palette z" maps the z value of each plot segment or plot element into the
cbrange mapping of the palette. This allows smoothly-varying color along a
3d line or surface. It also allows coloring 2D plots by palette values read
from an extra column of data (not all 2D plot styles allow an extra column).