On 11/7/2006 12:11 AM, Xiaomei Ma wrote: > I have drawn a map in which the X and Y axes are latitude and > longitude. Now I need to draw one circle on the map - the center is a > point with specific latitude and longitude, but the challenge is that > the radius is in miles. Is there a way to do this? I'd very much > appreciate your response.
You want the circle to appear to be a circle on the plot, or an accurate representation of a circle on the ground (which may not be circular when plotted)? Uwe answered the former. I don't know the answer to the latter, but surely someone does... Duncan Murdoch ______________________________________________ R-help@stat.math.ethz.ch 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.
