mapGrid. It works
simply by subtracting 180 from each longitude, if any longitude
in the vector exceeds 180.
shiftLongitude(longitudes)matrixShiftLongitude and standardizeLongitude.Other functions related to maps: lonlat2map,
lonlat2utm, map2lonlat,
mapArrows, mapAxis,
mapContour,
mapDirectionField, mapGrid,
mapImage, mapLines,
mapLocator,
mapLongitudeLatitudeXY,
mapMeridians, mapPlot,
mapPoints, mapPolygon,
mapScalebar, mapText,
mapTissot, mapZones,
utm2lonlat