Description Usage Arguments Details Value Author(s) See Also Examples
Given a point and a matrix of lines, calculate the projection of the vector of the point to the first coordinate of each line and the perpendicular distance.
1 | points2line(Lp, VL)
|
Lp |
Point list (x,y) |
VL |
Matrix of points, N by 4 as X1, Y1, X2, Y2 |
The first point in the matrix is considered the base.
list:
rat |
cosine projection |
srat |
sine projection |
Jonathan M. Lees<jonathan.lees@unc.edu>
REplane
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | S= stressSETUP()
pstart()
PLOTbox(S$Rax, S$Rbox, axcol= 'green', boxcol= 'purple')
PLOTplane(S$Rp, planecol="brown")
basepoint = 3
legpoints = c(7,4,2)
VL = cbind( rep(S$Rbox[basepoint,1] , length(legpoints)),
rep(S$Rbox[basepoint,2] , length(legpoints)),
S$Rbox[legpoints,1], S$Rbox[legpoints,2])
Lp=list()
Lp$x=c(40.0180732557)
Lp$y=c(40.4847345741)
G = points2line(Lp, VL )
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