treepipit: Tree Pipit Data
In maxstat: Maximally Selected Rank Statistics

Description Usage Format Details Source References Examples

Counts of tree pipits at 86 raster points in oak forests.

1	data("treepipit")

A data frame with 86 observations on the following 2 variables.

counts: number of tree pipits counted.
coverstorey: canopy overstorey in percent.

The influence of canopy overstorey on the number of bird individuals is of special interest.

Data collected and kindly provided by Joerg Mueller <mue@lwf.uni-muenchen.de>.

Mueller J. and Hothorn T. (2004), Maximally Selected Two-sample Statistics as a New Tool for the Identification and Assessment of Habitat Factors with an Application to Breeding-bird Communities in Oak Forests, European Journal of Forest Research, 123(3), 219–228.

mod <- maxstat.test(counts ~ coverstorey, data = treepipit, 
                    smethod = "Data", pmethod = "HL", minprop = 0.2,
                    maxprop = 0.8)
print(mod)
plot(mod)