| headtail {spatstat} | R Documentation |
Returns the first few elements (head) or the last few
elements (tail) of a spatial pattern.
## S3 method for class 'ppp' head(x, n = 6L, ...) ## S3 method for class 'ppx' head(x, n = 6L, ...) ## S3 method for class 'psp' head(x, n = 6L, ...) ## S3 method for class 'tess' head(x, n = 6L, ...) ## S3 method for class 'ppp' tail(x, n = 6L, ...) ## S3 method for class 'ppx' tail(x, n = 6L, ...) ## S3 method for class 'psp' tail(x, n = 6L, ...) ## S3 method for class 'tess' tail(x, n = 6L, ...)
x |
A spatial pattern of geometrical figures,
such as a spatial pattern of points
(an object of class |
n |
Integer. The number of elements of the pattern that should be extracted. |
... |
Ignored. |
These are methods for the generic functions head
and tail. They extract the first or last
n elements from x and return them as an object of the
same kind as x.
To inspect the spatial coordinates themselves, use
View(x)
or head(as.data.frame(x)).
An object of the same class as x.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.
Conversion to data frame:
as.data.frame.ppp,
as.data.frame.ppx,
as.data.frame.psp
head(cells) tail(as.psp(spiders), 10) head(dirichlet(cells), 4)