param_grid: Parameter data for the secondary sampling of a grid

In jamestsakalos/ComSpat: Analysis of Within-Community Spatial Organization using Species Combinations

Parameter data for the secondary sampling of a grid

Description

A data frame containing information on the size and shape of secondary sampling units for the 'comspat()' function.

Usage

param_grid

Format

A data frame with 16 observations (sampling steps) on the following 3 variables.

Steps.of.scaling

Numeric. Sampling step number

Length.of.plots

Numeric. Length of the sampling unit.

Height.of.plots

Numeric. Height of the sampling unit.

Details

The 'comspat()' function requires spatially explicit information. The 'params' argument stores and provides spatially explicit information. The parameter data frame for the grid and transect data (i.e., 'params.grid' and 'params.tran') are available in the package. The data contains information on the number of scaling steps ('Steps.of.scaling' column) and the size (the number of primary sampling units to create the length and height of the secondary sampling unit, captured in the 'Length.of.plots' and 'Height.of.plots' columns) of the secondary sampling units. For example, to perform secondary sampling on a grid, the first row of the parameter data set will read 1 for 'Steps.of.scaling', 'Length.of.plots' and 'Height.of.plots'. If the data was sampled as a '"Transect"' only the 'Length.of.plots' coordinate is required. If the data was sampled as a '"Grid"' both 'Length.of.plots' and 'Height.of.plots' are required.

'Length.of.plots' and 'Height.of.plots' are measured in the number of sampling units.

Examples

data("param_grid", package = "comspat")
str(param_grid)

jamestsakalos/ComSpat documentation built on July 1, 2023, 3:52 p.m.