Extract Subset of Point Pattern on Linear Network
Extract a subset of a point pattern on a linear network.
## S3 method for class 'lpp': [(x, i, ...)
- A point pattern on a linear network (object of class
- Subset index. A valid subset index in the usual Rsense, indicating which points should be retained.
This function extracts a designated subset of a point pattern on a linear network.
[.lpp is a method for
[ for the
"lpp". It extracts a designated subset of a point pattern.
i should be a subset index in the usual Rsense:
either a numeric vector
of positive indices (identifying the points to be retained),
a numeric vector of negative indices (identifying the points
to be deleted) or a logical vector of length equal to the number of
points in the point pattern
x. In the latter case,
(x$x[i], x$y[i]) for which
subset[i]=TRUE will be retained, and the others
will be deleted.
Use the function
unmark to remove marks from a
marked point pattern.
- A point pattern on a linear network (of class
# Chicago crimes data - remove cases of assault chicago[marks(chicago) != "assault"]