This function is used to isolate other oce functions from
changes to the map-projection functions that are done in the sf
package. (Until 2020 December, the rgdal package was used,
after a year of tests ensuring that the results of the two packages were
the same.)
oceProject(xy, proj, inv = FALSE, debug = getOption("oceDebug"))oceProject returns a two-column matrix, with first column
holding either longitude or x, and second column holding either
latitude or y.
two-column numeric matrix specifying locations. If inv
is False, then xy[,1] will hold longitude and xy[,2] will hold
latitude, but if inv is True, then the columns will be easting
and northing values (in metres).
a character value specifying the desired map
projection. See the projection parameter of mapPlot() for
details, including a historical note dated 2023-04-11 about the
now-deprecated sp package.
logical value, False by default, indicating whether an inverse projection is requested.
an integer specifying whether debugging information is
to be printed during the processing. This is a general parameter that
is used by many oce functions. Generally, setting debug=0
turns off the printing, while higher values suggest that more information
be printed. If one function calls another, it usually reduces the value of
debug first, so that a user can often obtain deeper debugging
by specifying higher debug values.
Dan Kelley
Other functions related to maps:
formatPosition(),
lonlat2map(),
lonlat2utm(),
map2lonlat(),
mapArrows(),
mapAxis(),
mapContour(),
mapCoordinateSystem(),
mapDirectionField(),
mapGrid(),
mapImage(),
mapLines(),
mapLocator(),
mapLongitudeLatitudeXY(),
mapPlot(),
mapPoints(),
mapPolygon(),
mapScalebar(),
mapText(),
mapTissot(),
oceCRS(),
shiftLongitude(),
usrLonLat(),
utm2lonlat()