drawing a circle of radius R around a point

geometry, gnuplot

Solution

If you don't want to graph a circle, you can use the `set object circle` command. You use it like this, for example:

set object X circle at axis 0,0 size scr 0.1 fc rgb "navy"

This will draw a navy blue circle at the origin with a radius of 0.1 of the screen (canvas) size. Note that when you specify a position/radius for the circle you have to specify which coordinate system you are using: `first` corresponds to the first x-y coordinate system, `scr` (short for `screen`) is for screen coordinates. You can learn more by looking in the documentation for drawing circles.

Problem

Original source