Adding coordinate lines

This layers adds coordinate contours to smooth effect plots. It is mainly useful for smooth-on-the-sphere plots.

l_coordContour(brLO = c(-9:9 * 20), brLA = c(-8:8 * 10), ...)

Arguments

brLO	a vector of meridians to be plotted.
brLA	a vector of parallels to be plotted.
...	graphical arguments to be passed to ggplot2::geom_contour.

Value

An object of class gamLayer.

See also

See plot.sos.smooth for examples.