LTDataFrame {DSpat}R Documentation

Creates covariate dataframes

Description

Creates covariate dataframes for observations and dummy quadrature points

Usage

LTDataFrame(study.area, lines, lines.psp, int.formula, det.formula, 
                   covariates, Q.lt)

Arguments

study.area owin object that defines study area
lines data frame of lines with structure as shown in quadscheme.lt
lines.psp psp class with added list elements width and label
int.formula model formula for intensity process
det.formula model formula for detection scale process
covariates covariate dataframe (see DSpat for structure)
Q.lt lt quadscheme of class quad

Details

Checks to make sure that all of the variables used in formula are either in covariates or in lines. Then it extracts the values of covariates for each observation and for dummy points. These are merged with the needed covariates from lines and then a single dataframe is returned with the observations followed by the dummy points. In addition, the covariate images in a list are returned to keep with the dspat object for use in integrate.intensity.

Value

cov.df dataframe of covariates followed by rows for covariates for dummy quadrature points
covariate.im list of covariate images

Author(s)

Devin Johnson; Jeff Laake

See Also

quadscheme.lt,create.covariate.images


[Package DSpat version 0.1.0 Index]