Hi Fraser, I believe the package plotrix has a polar plot function. For circular statistics there are the packages CircStats, and circular on CRAN. Those should have what you need.
Nicholas > ------------------------------ > > Message: 3 > Date: Tue, 8 Jul 2008 14:35:16 -0400 > From: Fraser Smith <[EMAIL PROTECTED]> > Subject: [R-sig-eco] polar plot mappng > To: r-sig-ecology@r-project.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes > > Dear list members, > I am very new to R, so apologies for the broad nature of these > questions. > > I am currently attempting to run through some of my data from the > Yukon Territory analyzing spatial layout of live/dead trees and stumps > following partial stand harvesting. > The surveying of these trees involved circular plots with a 20m fixed- > radius. Recordings for location involved a laser range-finder and > electronic compass, and therefore all records have distance- (0-20 > from centre) and bearing- values (0-360 degrees) to pinpoint location. > In order to plot and analyze this data, I wish to use the distance and > bearing values as they are for a measurement from a center point, > instead of converting to an x-y coordinate system or transforming the > data into radians etc. > I am wondering if anyone could recommend any resources, functions, > packages, search terms, etc. for effectively 'mapping' these stems? > > Also, while visualizing this data is a first step, I would like to > later incorporate rose diagrams/circular statistics for tree fall > direction, prevailing winds, slope, aspect, etc as an overlay or > direct comparison to these plot maps. Essentially, I suppose I want to > get R to think in polar plot coordinates instead of cartesian > coordinates for this data > Any help with resources on these procedures specifically related to R > would be greatly appreciated. > > > Fraser Smith > > MScF student > Faculty of Forestry, University of Toronto > [EMAIL PROTECTED] > > _______________________________________________ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
