Plot a Point Matching
Plot an object of class "pppmatching" which represents
a matching of two planar point patterns.
## S3 method for class 'pppmatching' plot(x, addmatch = NULL, main = NULL, ..., adjust = 1)
x |
Point pattern matching object (class |
addmatch |
Optional. A matrix indicating additional pairs of points that should be matched. See Details. |
main |
Main title for the plot. |
... |
Additional arguments passed to other plot methods. |
adjust |
Adjustment factor for the widths of line segments. A positive number. |
The object x represents a matching found between
two point patterns X and Y. The matching may be
incomplete. See pppmatching.object for further
description.
This function plots the matching by drawing the two point patterns
X and Y as red and blue dots respectively, and drawing
line segments between each pair of matched points. The width of the
line segments is proportional to the strength of matching. The
proportionality constant can be adjusted using the argument
adjust.
The argument addmatch is for use mainly by developers to
study algorithms which update the matching.
If addmatch is given, it should be a matrix with dimensions
npoints(X) * npoints(Y). If addmatch[i,j] > 0 then
a light grey line segment will be drawn between X[i] and Y[j.
Null.
Dominic Schuhmacher and Adrian Baddeley Adrian.Baddeley@curtin.edu.au.
X <- runifrect(7) Y <- runifrect(7) am <- r2dtable(1, rep(10,7), rep(10,7))[[1]]/10 m2 <- pppmatching(X, Y, am) plot(m2, adjust=0.3)
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