plot.quadrattest
Display the result of a quadrat counting test.
Given the result of a quadrat counting test, graphically display the quadrats that were used, the observed and expected counts, and the residual in each quadrat.
Usage
# S3 method for quadrattest
plot(x, ..., textargs=list())
Arguments
- x
Object of class
"quadrattest"
containing the result ofquadrat.test
.- …
Additional arguments passed to
plot.tess
to control the display of the quadrats.- textargs
List of additional arguments passed to
text.default
to control the appearance of the text.
Details
This is the plot method for objects
of class "quadrattest"
. Such an object is produced by
quadrat.test
and represents the result of
a \(\chi^2\) test for a spatial point pattern.
The quadrats are first plotted using plot.tess
.
Then in each quadrat, the observed and expected counts
and the Pearson residual are displayed as text using
text.default
.
Observed count is displayed at top left; expected count at top right;
and Pearson residual at bottom.
Value
Null.
See Also
Examples
# NOT RUN {
plot(quadrat.test(swedishpines, 3))
# }