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Circles
The circles style plots a circle with an explicit radius at each data point.
Three columns of data are required: x, y, radius. An optional 4th column may
be used to specify color information. The radius is always interpreted in the
units of the plot's horizontal axis (x or x2). The scale on y and the aspect
ratio of the plot are both ignored.
Example (draws circles whose area is proportional to the value in column 3):
set style fill transparent solid 0.2 noborder
plot 'data' using 1:2:(sqrt($3)) with circles, \
'data' using 1:2 with linespoints
The result is similar to using a points plot with variable size points and
pointstyle 6, except that the circles will scale with the x axis range.
See also set object circle (p.
) and fillstyle (p.
).
Autobuild
2010-07-05