I'm not sure if there are any packages that do this, but I've created similar plots in R. The easiest way I've found is to think in terms of a unit circle in polar coordinates for drawing the plot. I haven't tested the code below, but it will give you the idea.
dist=dist/9000 t = seq(0,360,length.out=1000)*pi/180 #want radians not degrees angle=angle*pi/180 circle$x=cos(t) circle$y=sin(t) plot(circle$x,circle$y,type='l') You can use the polygon function to draw the 'petals'. # for 0-10 t0 = seq(0,10,length.out=50)*pi/180 petal0$x = dist[1]*cos(t0) petal0$y = dist[1]*sin(t0) polygon( x=c(0,petal0$x,0),y=c(0,petal0$y,0),col=color.list[1]) I hope this helps. Alan Mitchell -----Original Message----- From: kitty [mailto:kitty.a1...@gmail.com] Sent: Tue 7/26/2011 2:20 PM To: r-help@r-project.org Subject: [R] Plotting problems directional or rose plots Hi, I'm trying to get a plot that looks somewhat like the attached image (sketched in word). I think I need somthing called a rose diagram? but I can't get it to do what I want. I'm happy to use any library. Essentially, I want a circle with degree slices every 10 degrees with 0 at the top representing north, and 'tick marks' around the outside in 10 degree increments to match the slices (so the slices need to be ofset by 5 degrees so the 0 degree slice actually faces north) I then want to be able to colour in the slices depending on the distance that the factor extends to; so for example the 9000 dist is the largest in the example so should fill the slice, a distance in this plot of 4500 would fill halfway up the slice. I also want to be able to specify the colour of each slice so that I can relate it back to the spatial correlograms I have. I have added some sample data below. Thank you for reading my post, All help is greatly appreciated, K sample data: #distance factor extends to dist<-c(5000,7000,9000,4500,6000,500) #direction angle<-c(0,10,20,30,40,50) #list of desired colour example, order corrisponds to associated angle/direction color.list<-c('red','blue','green','yellow','pink','black') (my real data is from 0 to 350 degrees, and so I have corresponding distance and colour data for each 10 degree increment). ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
