PointsAlong {GEOmap} | R Documentation |
find evenly spaced points along a line
PointsAlong(x, y, spacing = NULL, N = 1, endtol = 0.1)
x |
x-coordinates |
y |
y-coordinates |
spacing |
spacing of points |
N |
number of points |
endtol |
indent on either ends |
The total length is returned: this is the line integral along the trace.
List:
x |
x-coordinates |
y |
y-coordinates |
rot |
angle at the points |
TOT |
total length along the trace |
Jonathan M. Lees<jonathan.lees@unc.edu
plot(c(-5,5), c(-5,5), asp=1, type='n' ) ff=list() ff$x=c(-4.850,-4.700,-3.934,-2.528, 0.603, 2.647, 3.861, 2.626) ff$y=c(-4.045,-2.087,-0.710, 0.172, 1.291, 2.087,-0.753,-4.131) g = PointsAlong(ff$x, ff$y, N=20) lines(ff$x, ff$y) points(g$x, g$y)