gnuplot documentation

28 FILLEDCURVES gnuplot 4.3 43
.
Note: To place additional symbols, such as the median value, on a box-and-whisker plot requires additional
plot commands as in this example:
# Data columns:X Min 1stQuartile Median 3rdQuartile Max
set bars 4.0
set style fill empty
plot ’stat.dat’ using 1:3:2:6:5 with candlesticks title ’Quartiles’, \
’’ using 1:4:4:4:4 with candlesticks lt -1 notitle
# Plot with crossbars on the whiskers, crossbars are 50% of full width
plot ’stat.dat’ using 1:3:2:6:5 with candlesticks whiskerbars 0.5
See ‘set boxwidth‘, ‘set bars‘ and ‘set style fill‘.
27 Dots
The dots style plots a tiny dot at each point; this is
useful for scatter plots with many points. Either 1
or 2 columns of input data are required in 2D. Three
columns are required in 3D.
For some terminals (post, pdf) the size of the dot
can be controlled by changing the linewidth.
1 column y # x is taken from row number
2 columns: x y
3 columns: x y z # 3D only (splot)
28 Filledcurves
The filledcurves style is only relevant to 2D plotting.
Three variants are possible. The first two
variants require either a function or two columns
of input data, and may be further modified by the
options listed below.
Syntax:
plot ... with filledcurves [option]
with filledcurves
above
below
curve 1
curve 2
where the option can be
[closed | {above | below} {x1 | x2 | y1 | y2}[=] | xy=,]
The first variant, closed, treats the curve itself as a closed polygon. This is the default if there are two
columns of input data.
The second variant is to fill the area between the curve and a given axis, a horizontal or vertical line, or
a point.
filledcurves closed ... just filled closed curve,
filledcurves x1 ... x1 axis,
filledcurves x2 ... x2 axis, etc for y1 and y2 axes,
filledcurves y1=0 ... line y=0 (at y1 axis) ie parallel to x1 axis,
filledcurves y2=42 ... line y=42 (at y2 axis) ie parallel to x2, etc,
filledcurves xy=10,20 ... point 10,20 of x1,y1 axes (arc-like shape).