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.tessto control the display of the quadrats.- textargs
List of additional arguments passed to
text.defaultto 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))
# }