R: Tree Pipit Data

treepipit {maxstat} | R Documentation

## Tree Pipit Data

### Description

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

### Usage

    data("treepipit")

### Format

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

counts

  number of tree pipits counted.

coverstorey

  canopy overstorey in percent.

### Details

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

### Source

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

### References

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.

### Examples

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

[Package maxstat version 0.7-25 Index]