plot_dz: Plot a digital elevation profile based on xyz data

In ITSLeeds/slopes: Calculate Slopes of Roads, Rivers and Trajectories

Plot a digital elevation profile based on xyz data

Description

Plot a digital elevation profile based on xyz data

Usage

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))

ITSLeeds/slopes documentation built on Oct. 13, 2024, 3:54 a.m.