Hey, i'd like to compose a clock-like looking plot composed out of two circles, each showing the length of a period (to compare them). first, to do so, it looked the easiest by using pie(), just puting multiple pie-charts over each other. the problem is that once the second pie is drawn, it replaces the first one. does anybody know how to add a second, smaller pie over an existing one, like a layer? thanks, lars
display two pie-charts
4 messages · Lars, Barry Rowlingson, Romain Francois +1 more
Lars wrote:
i'd like to compose a clock-like looking plot composed out of two circles, each showing the length of a period (to compare them). first, to do so, it looked the easiest by using pie(), just puting multiple pie-charts over each other. the problem is that once the second pie is drawn, it replaces the first one. does anybody know how to add a second, smaller pie over an existing one, like a layer?
pie() calls plot.new(), thus creating a new plot. Comment out the plot.new call and you'll have a pie() function that splats over the current plot. Suggest you copy 'pie' to something of your own: > clock = pie Then edit the 'clock' function, removing the 'plot.new' call. All 'pie' does is call 'polygon' with some sine and cosine trickery - you may be better off writing your own graphics function to do what you want. Reading the 'pie' code may help! Baz
Le 11.05.2005 15:43, Lars a ??crit :
Hey, i'd like to compose a clock-like looking plot composed out of two circles, each showing the length of a period (to compare them). first, to do so, it looked the easiest by using pie(), just puting multiple pie-charts over each other. the problem is that once the second pie is drawn, it replaces the first one. does anybody know how to add a second, smaller pie over an existing one, like a layer? thanks, lars
Look at : ?layout ?par And try : par(mfrow=c(1,2)) pie(runif(4)) pie(runif(4))
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Lars wrote:
Hey, i'd like to compose a clock-like looking plot composed out of two circles, each showing the length of a period (to compare them). first, to do so, it looked the easiest by using pie(), just puting multiple pie-charts over each other. the problem is that once the second pie is drawn, it replaces the first one. does anybody know how to add a second, smaller pie over an existing one, like a layer?
Hi Lars, You might be able to do what you want with either floating.pie() or clock24.plot() in the plotrix package. I can't try it out right now, but I'll have a look later today. Jim