plot.quadratcount
Plot Quadrat Counts
Given a table of quadrat counts for a spatial point pattern, plot the quadrats which were used, and display the quadrat count as text in the centre of each quadrat.
Usage
# S3 method for quadratcount
plot(x, …, add = FALSE,
entries = as.vector(t(as.table(x))),
dx = 0, dy = 0, show.tiles = TRUE,
textargs = list())
Arguments
- x
Object of class
"quadratcount"
produced by the functionquadratcount
.- …
Additional arguments passed to
plot.tess
to plot the quadrats.- add
Logical. Whether to add the graphics to an existing plot.
- entries
Vector of numbers to be plotted in each quadrat. The default is to plot the quadrat counts.
- dx,dy
Horizontal and vertical displacement of text relative to centroid of quadrat.
- show.tiles
Logical value indicating whether to plot the quadrats.
- textargs
List containing extra arguments passed to
text.default
to control the annotation.
Details
This is the plot method for the objects
of class "quadratcount"
that are
produced by the function quadratcount
.
Given a spatial point pattern, quadratcount
divides the observation window into disjoint tiles or quadrats,
counts the number of points in each quadrat, and stores the
result as a contingency table which also belongs to the
class "quadratcount"
.
First the quadrats are plotted
(provided show.tiles=TRUE
, the default).
This display can be controlled by passing additional arguments …
to plot.tess
.
Then the quadrat counts are printed using
text.default
. This display can be controlled
using the arguments dx,dy
and textargs
.
Value
Null.
See Also
Examples
# NOT RUN {
plot(quadratcount(swedishpines, 5))
# }