create.covariate.images: Create a list of covariate images
Description
Creates a list of covariates images from a dataframe of covariates
defined on a grid for the study area. Images are created for
variables contained in vector of names varnames and the values of the covariates are
in the covariates dataframe.
Usage
create.covariate.images(covariates, varnames)
Arguments
covariates
covariate dataframe (see DSpat for structure)
varnames
vector of names of fields contained in covariates that will be used for fitted model