Re: [R] Creating a polygon from an unordered set of points

2012-10-23 Thread Greg Snow
One possibility: Estimate the center of the polygon with the mean of the x coords and the mean of the y coords. Calculate the angle of each point from that center point using the atan2 function sort the data by the angle calculated. This will not be perfect if you have inlets and peninsulas, but

[R] Creating a polygon from an unordered set of points

2012-10-23 Thread peleve
Hello, I have the contour of the shoreline of a lake. I have measured data points away from the lake shore signifying a particular depth. The data is not ordered as a polygon and hence trying to draw it creates a series of lines all over the place. I would like to turn the points into a ordered