View source: R/spMakeSpatial_options.R
spMakeSpatial_options | R Documentation |
Returns a list of user-supplied parameters and parameter values for making SpatialPoints.
spMakeSpatial_options(
xvar = NULL,
yvar = NULL,
xy.crs = 4269,
prj = NULL,
datum = NULL,
zone = NULL,
zoneS = FALSE,
aea.param = "USGS",
...
)
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. |
If no parameters, an empty list is returned.
A list of user-supplied parameters and parameter values for strata.
Grayson W. White
spMakeSpatial_options()
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