plot_map: Plot Map

In tylermorganwall/rayshader: Create Maps and Visualize Data in 2D and 3D

Plot Map

Description

Displays the map in the current device.

Usage

plot_map(
  hillshade,
  rotate = 0,
  asp = 1,
  title_text = NA,
  title_offset = c(20, 20),
  title_color = "black",
  title_size = 30,
  title_font = "sans",
  title_style = "normal",
  title_bar_color = NULL,
  title_bar_alpha = 0.5,
  title_position = "northwest",
  ...
)

Arguments

hillshade	Hillshade to be plotted.
rotate	Default '0'. Rotates the output. Possible values: '0', '90', '180', '270'.
asp	Default '1'. Aspect ratio of the resulting plot. Use 'asp = 1/cospi(mean_latitude/180)' to rescale lat/long at higher latitudes to the correct the aspect ratio.
title_text	Default 'NULL'. Text. Adds a title to the image, using 'magick::image_annotate()'.
title_offset	Default 'c(20,20)'. Distance from the top-left (default, 'gravity' direction in image_annotate) corner to offset the title.
title_color	Default 'black'. Font color.
title_size	Default '30'. Font size in pixels.
title_font	Default 'sans'. String with font family such as "sans", "mono", "serif", "Times", "Helvetica", "Trebuchet", "Georgia", "Palatino" or "Comic Sans".
title_style	Default 'normal'. Font style (e.g. 'italic').
title_bar_color	Default 'NULL'. If a color, this will create a colored bar under the title.
title_bar_alpha	Default '0.5'. Transparency of the title bar.
title_position	Default 'northwest'. Position of the title.
...	Additional arguments to pass to the 'raster::plotRGB' function that displays the map.

Examples

#Plotting the Monterey Bay dataset with bathymetry data
if(run_documentation()) {
water_palette = colorRampPalette(c("darkblue", "dodgerblue", "lightblue"))(200)
bathy_hs = height_shade(montereybay, texture = water_palette)
#For compass text
par(family = "Arial")

#Set everything below 0m to water palette
montereybay %>%
 sphere_shade(zscale=10) %>%
 add_overlay(generate_altitude_overlay(bathy_hs, montereybay, 0, 0))  %>%
 add_shadow(ray_shade(montereybay,zscale=50),0.3) %>%
 plot_map()
}
#Correcting the aspect ratio for the latitude of Monterey Bay

extent_mb = attr(montereybay,"extent")
mean_latitude = mean(c(extent_mb@ymax,extent_mb@ymin))
if(run_documentation()) {
montereybay %>%
 sphere_shade(zscale=10) %>%
 add_overlay(generate_altitude_overlay(bathy_hs, montereybay, 0, 0))  %>%
 add_shadow(ray_shade(montereybay,zscale=50),0.3) %>%
 plot_map(asp = 1/cospi(mean_latitude/180))
}

tylermorganwall/rayshader documentation built on Nov. 21, 2024, 8:11 a.m.