initgrid: Initiate Grid

In remi-daigle/BESTMPA:

Description

Initiates a SpatialPolygonsDataFrame grid that will be used as the model domain. Variables in the dataframe of the SpatialPolygonsDataFrame that should otherwise be logical (e.g. areas) are converted to numeric since logical variables are incompatible with ESRI shapefiles.

Usage

initgrid(EEZ, cell_size, proj, areas = NA)

Arguments

EEZ	A SpatialPolygonsDataFrame of the model domain
cell_size	cell size of the grid to be created
proj	A character string of projection arguments; the arguments must be entered exactly as in the PROJ.4 documentation
areas	a named list of areas to include within the dataframe of the grid SpatialPolygonsDataFrame. (e.g. areas=c(Habitats=Habitats,Breeding=Breeding))

Value

SpatialPolygonsDataFrame

Examples

proj  <- "+proj=utm +zone=20 +datum=NAD83 +units=m +no_defs +ellps=GRS80 +towgs84=0,0,0"
p <- initgrid(EEZ=EEZ,cell_size=20000,proj=proj,areas=c(Habitats=Habitats,Breeding=Breeding))

remi-daigle/BESTMPA documentation built on May 27, 2019, 4:55 a.m.