spMakeSpatial_options {FIESTAutils}

Make SpatialPoints options

Description

Returns a list of user-supplied parameters and parameter values for making SpatialPoints.

Usage

spMakeSpatial_options(
  xvar = NULL,
  yvar = NULL,
  xy.crs = 4269,
  prj = NULL,
  datum = NULL,
  zone = NULL,
  zoneS = FALSE,
  aea.param = "USGS",
  ...
)

Arguments

xvar

String. Name of variable in xyplt defining x coordinate.

yvar

String. Name of variable in xyplt defining y coordinate.

xy.crs

PROJ.4 String or CRS object or Integer EPSG code defining Coordinate Reference System. (e.g., EPSG:4269-Geodetic coordinate system for North America, NAD83).

prj

String. Projection, or coordinate system of the X/Y coordinates ("longlat", "utm", "aea"). If other, include PROJ.4 string in prj4str.

datum

String. Datum of projection ("WGS84", "NAD83", "NAD27").

zone

Integer. If prj="utm", the UTM zone.

zoneS

Logical. If prj="utm", if the UTM zone is in the Southern hemisphere.

aea.param

String. If prj="aea", the associated lat/lon parameters (USGS: " +lat_1=29.5 +lat_2=45.5 +lat_0=23 +lon_0=-96 +x_0=0 +y_0=0"). If other, include PROJ.4 string in prj4str.

...

For extendibility.

Details

If no parameters, an empty list is returned.

Value

A list of user-supplied parameters and parameter values for strata.

Author(s)

Grayson W. White

Examples

spMakeSpatial_options()