oce (version 1.1-1)

shiftLongitude: Shift Longitude to Range -180 to 180

Description

This is a utility function used by mapGrid. It works simply by subtracting 180 from each longitude, if any longitude in the vector exceeds 180.

Usage

shiftLongitude(longitudes)

Arguments

longitudes

a numerical vector of longitudes

Value

vector of longitudes, shifted to the desired range.

See Also

matrixShiftLongitude and standardizeLongitude.

Other functions related to maps: lonlat2map, lonlat2utm, map2lonlat, mapArrows, mapAxis, mapContour, mapDirectionField, mapGrid, mapImage, mapLines, mapLocator, mapLongitudeLatitudeXY, mapPlot, mapPoints, mapPolygon, mapScalebar, mapText, mapTissot, oceCRS, usrLonLat, utm2lonlat