oceProject: Wrapper to sf::sf_project()

In oce: Analysis of Oceanographic Data

Wrapper to sf::sf_project()

Description

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.)

Usage

oceProject(xy, proj, inv = FALSE, debug = getOption("oceDebug"))

Arguments

xy	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).
proj	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.
inv	logical value, False by default, indicating whether an inverse projection is requested.
debug	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.

Value

oceProject returns a two-column matrix, with first column holding either longitude or x, and second column holding either latitude or y.

Author(s)

Dan Kelley

See Also

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()

oce documentation built on Sept. 11, 2024, 7:09 p.m.