Plot a digital elevation profile based on xyz data

plot_dz(
  d,
  z,
  fill = TRUE,
  horiz = FALSE,
  pal = colorspace::diverging_hcl,
  ...,
  legend_position = "top",
  col = "black",
  cex = 0.9,
  bg = grDevices::rgb(1, 1, 1, 0.8),
  title = "Slope colors (percentage gradient)",
  brks = NULL,
  seq_brks = NULL,
  ncol = 4
)

Arguments

d	Cumulative distance
z	Elevations at points across a linestring
fill	Should the profile be filled? `TRUE` by default
horiz	Should the legend be horizontal (`FALSE` by default)
pal	Color palette to use, `colorspace::diverging_hcl` by default.
...	Additional parameters to pass to legend
legend_position	The legend position. One of "bottomright", "bottom", "bottomleft", "left", "topleft", "top" (the default), "topright", "right" and "center".
col	Line colour, black by default
cex	Legend size, 0.9 by default
bg	Legend background colour, `grDevices::rgb(1, 1, 1, 0.8)` by default.
title	Title of the legend, `NULL` by default.
brks	Breaks in colour palette to show. `c(1, 3, 6, 10, 20, 40, 100)` by default.
seq_brks	Sequence of breaks to show in legend. Includes negative numbers and omits zero by default
ncol	Number of columns in legend, 4 by default.

Value

A plot showing the elevation profile associated with a linestring.

Examples

library(sf)
route_xyz = lisbon_road_segment_3d
m = st_coordinates(route_xyz)
d = cumsum(sequential_dist(m, lonlat = FALSE))
d = c(0, d)
z = m[, 3]
slopes:::plot_dz(d, z, brks = c(3, 6, 10, 20, 40, 100))