enter.parameters: Enter parameters
In rSPACE: Spatially-Explicit Power Analysis for Conservation and Ecology

Description Usage Arguments Details Value Note Author(s)

View source: R/ClickyBox.r

Dialogue box for help setting up a parameter list

1	enter.parameters(Parameters = NULL)

Parameters

Optional parameters to use as defaults in clicky box.

Creates a minimal set of parameters necessay to run simulations and analysis. Additional arguments can be added to the outputted list as needed.

Parameter explanations

Population parameters	----------------
Initial population size	Population size at the start of the simulation
Population growth rate	Annual population multiplication rate (Lambda=N_t/N_0)
Number of years	Maximum number of years for the simulation
Number of types	Types of individuals to treat separately in the population simulation
Proportion of population	Proportion of population in each individual-type (e.g. sex ratio)
Movement parameters	----------------
Buffer distance	Minimum distance between movement centers for each type of individual
Movement radius	With `moveDistQ`, used to define bivariate normal use distribution
Proportions of movements within radius	With movement radius, used to define bivariate normal use distribution
Truncation	Limits to long-distance movements (proportion of movement distribution to allow)
Sampling parameters	----------------
Cell size	Area of grid cell
Minimum habitat value	Cutoff value for where individual centers should be located
Minimum sampling value	Cutoff for home much habitat must be included in cell to sample
Number of visits	Maximum number of visits to each grid cell per year

For parameters defining movement distribution, estimates may be drawn from either movement studies (e.g., step lengths), home range studies (e.g., minimum convex polygon, kernal estimates), or expert opinion. These parameter estimates should reflect expected movement during the sampling season only. For some species (e.g., a wide-ranging species such as wolverine), an individual may be reasonably expected to potentially visit any location in its home range during the sampling season; however, this is not always expected to be the case.

A parameter list with the following items

N: Initial population size
lmda: Population growth rate
n_yrs: Maximum number of years in the simulation
MFratio: Proportion of population by type of individual
buffer: Distance between individual movement centers for each type of individual
moveDist: Movement radius for each type of individual
moveDistQ: Percent of time within movement radius for each type of individual
maxDistQ: Proportion of movement distribution to allow
grid_size: Area of each grid cell
habitat.cutoff: Minimum value of map where individual movement centers can be located.
sample.cutoff: Cutoff of map values above habitat.cutoff required for a grid cell to be included in sampling
n_visits: Maximum number of visits per year
detP: Initial detection probability = 1 (perfect detection to established availability)