Plot long-lat grid over projected data

Plot long-lat grid over projected data

llgridlines(obj, easts, norths, ndiscr = 20, lty = 2, offset=0.5, side="WS",
llcrs = "+proj=longlat +datum=WGS84", plotLines = TRUE, plotLabels =
TRUE, ...)

Arguments

obj	object, deriving from Spatial-class having projection specified
easts	numeric; see gridlines
norths	numeric; see gridlines
ndiscr	numeric; see gridlines
offset	numeric; see gridlines
side	character, default “WS”; see gridlines; available from sp 0.9-84
lty	line type to be used for grid lines
llcrs	proj4string of longitude - latitude
plotLines	logical; plot lines?
plotLabels	logical; plot labels?
...	graphics arguments passed to plot function for lines and text function for labels

Value

none; side effect is that grid lines and lables are plotted

See also

is.projected, CRS-class

Examples

set_thin_PROJ6_warnings(TRUE)
data(meuse)
coordinates(meuse) = ~x+y
proj4string(meuse) <- CRS("+init=epsg:28992")
plot(meuse) 
llgridlines(meuse, lty=3)
#> Warning: CRS object has comment, which is lost in output; in tests, see
#> https://cran.r-project.org/web/packages/sp/vignettes/CRS_warnings.html
#> Warning: CRS object has comment, which is lost in output; in tests, see
#> https://cran.r-project.org/web/packages/sp/vignettes/CRS_warnings.html
plot(meuse) 
llgridlines(meuse, lty=3, side = "EN", offset = 0.2)
#> Warning: CRS object has comment, which is lost in output; in tests, see
#> https://cran.r-project.org/web/packages/sp/vignettes/CRS_warnings.html
#> Warning: CRS object has comment, which is lost in output; in tests, see
#> https://cran.r-project.org/web/packages/sp/vignettes/CRS_warnings.html