A data frame containing information on the size and shape of secondary
sampling units for the comspat
function.
Format
A data frame with 16 observations (sampling steps) on the following 2 variables.
- Steps.of.scaling
Numeric. Sampling step number
- Length.of.plots
Numeric. Length 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.,
param_grid
and param_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.