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 class 'quadratcount':
plot(x, \dots, 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
plot(quadratcount(swedishpines, 5))