circles

The circles style plots a circle with an explicit radius at each data point. 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. If the radius is not given in a separate column for each point it is taken from set style circle. In this case the radius may use graph or screen coordinates.

Many combinations of per-point and previously set properties are possible. For 2D plots these include

    using x:y
    using x:y:radius
    using x:y:color
    using x:y:radius:color
    using x:y:radius:arc_begin:arc_end
    using x:y:radius:arc_begin:arc_end:color

By default a full circle will be drawn. The result is similar to using a points plot with variable size points and pointtype 7, except that the circles scale with the x axis range. It is possible to instead plot arc segments by specifying a start and end angle (in degrees) in columns 4 and 5.

A per-circle color may be provided in the last column of the using specifier. In this case the plot command must include a corresponding variable color term such as lc variable or fillcolor rgb variable.

See set style circle, set object circle, and set style fill.

For 3D plots the using specifier must contain

    splot DATA using x:y:z:radius:color

where the variable color column is optional.

Examples:

    # 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

    # draws Pac-men instead of circles
    plot 'data' using 1:2:(10):(40):(320) with circles

    # draw a pie chart with inline data
    set xrange [-15:15]
    set style fill transparent solid 0.9 noborder
    plot '-' using 1:2:3:4:5:6 with circles lc var
    0    0    5    0    30    1
    0    0    5   30    70    2
    0    0    5   70   120    3
    0    0    5  120   230    4
    0    0    5  230   360    5
    e