Plot a digital elevation profile based on xyz data

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 = c(3, 6, 10, 20, 40, 100),
  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, "Slope colors (percentage gradient)" by default.

brks

Breaks in colour palette to show. c(3, 6, 10, 20, 40, 100) by default.

seq_brks

Sequence of breaks to show in legend. By default this is calculated from brks.

ncol

Number of columns in legend, 4 by default.

Value

A plot is created on the current graphics device.

Details

This function is called by plot_slope() but can be used directly.

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]
plot_dz(d, z, brks = c(3, 6, 10, 20, 40, 100))