enter.parameters: Enter parameters

Description Usage Arguments Details Value Note Author(s)

View source: R/ClickyBox.r


Dialogue box for help setting up a parameter list


enter.parameters(Parameters = NULL)



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


Initial population size


Population growth rate


Maximum number of years in the simulation


Proportion of population by type of individual


Distance between individual movement centers for each type of individual


Movement radius for each type of individual


Percent of time within movement radius for each type of individual


Proportion of movement distribution to allow


Area of each grid cell


Minimum value of map where individual movement centers can be located.


Cutoff of map values above habitat.cutoff required for a grid cell to be included in sampling


Maximum number of visits per year


Initial detection probability = 1 (perfect detection to established availability)


Please direct all complaints about the damn clicky box to Mike Schwartz


Martha Ellis, Jody Tucker, Mike Schwartz

rSPACE documentation built on May 29, 2017, 11:37 a.m.