Map layer: iso (contour) — tm_iso • tmap

Map layer that draws iso (contour) lines. Stack of tm_lines() and tm_labels_highlighted.

Usage

tm_iso(
  col = tm_const(),
  text = tm_vars(x = 1),
  ...,
  options_lines = opt_tm_lines(),
  options_labels = opt_tm_labels()
)

Arguments

col: Visual variable that determines the color. See details.
text: Visual variable that determines the text. See details.
...: passed on to tm_lines() and tm_labels_highlighted(). For the text color and alpha transparency of the text labels, please use text_col and text_alpha instead of col and col_alpha.
options_lines: The options for tm_lines()
options_labels: The options for tm_labels_highlighted()