skylark: Skylark population data

In rtrim: Trends and Indices for Monitoring Data

Skylark population data

Description

The Skylark dataset that was included with the original TRIM software.

The dataset can be loaded in two forms. The skylark dataset is exactly equal to the data set in the original TRIM software:

Column	Type	Description
site	integer	Site number
time	integer	Time point coded as integer sequence
count	numeric	Counted skylarks
Habitat	integer	Habitat type (1, 2)
Deposition	integer	Deposition type (1, 2, 3, 4)

The current implementation is more flexible and allows time points to be coded as years and covariates as factors. The skylark2 data set looks as follows.

Column	Type	Description
site	factor	Site number
year	integer	Time point coded as year
count	integer	Counted skylarks
Habitat	factor	Habithat type (dunes, heath)
Deposition	integer	Deposition type (1, 2, 3, 4)
Weight	numeric	Site weight

Usage

data(skylark); data(skylark2)

Format

.RData

rtrim documentation built on June 22, 2024, 10:39 a.m.