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All functions

angle_halfcircle_bottom() angle_halfcircle_right() angle_fixed() angle_identity()
Standardize label angles
iso_to_sfg()
Convert isolines or isobands to sfg object
isobands() isolines()
Efficient calculation of isolines and isobands from elevation grid
isobands_grob()
Render isobands
isolines_grob()
Render labeled isolines
label_placer_minmax() label_placer_none() label_placer_manual() label_placer_middle()
Set up a label placement strategy
plot_iso()
Visualize a single isoband