stat_spat_coordinates: Extract coordinates from 'SpatVector' objects

In dieghernan/tidyterra: 'tidyverse' Methods and 'ggplot2' Helpers for 'terra' Objects

Extract coordinates from SpatVector objects

Description

stat_spat_coordinates() extracts the coordinates from SpatVector objects and summarises them to one pair of coordinates (x and y) per geometry.

Usage

stat_spat_coordinates(
  mapping = aes(),
  data = NULL,
  geom = "point",
  position = "identity",
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE,
  ...
)

Arguments

mapping	Set of aesthetic mappings created by aes(). If specified and inherit.aes = TRUE (the default), it is combined with the default mapping at the top level of the plot. You must supply mapping if there is no plot mapping.
data	A SpatVector object, see terra::vect().
geom	The geometric object to use to display the data for this layer. When using a ⁠stat_*()⁠ function to construct a layer, the geom argument can be used to override the default coupling between stats and geoms. The geom argument accepts the following: A Geom ggproto subclass, for example GeomPoint. A string naming the geom. To give the geom as a string, strip the function name of the geom_ prefix. For example, to use geom_point(), give the geom as "point". For more information and other ways to specify the geom, see the layer geom documentation.
position	A position adjustment to use on the data for this layer. This can be used in various ways, including to prevent overplotting and improving the display. The position argument accepts the following: The result of calling a position function, such as position_jitter(). This method allows for passing extra arguments to the position. A string naming the position adjustment. To give the position as a string, strip the function name of the position_ prefix. For example, to use position_jitter(), give the position as "jitter". For more information and other ways to specify the position, see the layer position documentation.
na.rm	If FALSE, the default, missing values are removed with a warning. If TRUE, missing values are silently removed.
show.legend	logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes. You can also set this to one of "polygon", "line", and "point" to override the default legend.
inherit.aes	If FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. borders().
...	Other arguments passed on to ggplot2::stat_sf_coordinates().

Details

Wrapper of ggplot2::stat_sf_coordinates().

See ggplot2::stat_sf_coordinates() for details.

Value

A ggplot2 layer

See Also

Other ggplot2 utils: autoplot.Spat, fortify.Spat, geom_spat_contour, geom_spatraster(), geom_spatraster_rgb(), ggspatvector

Examples

cyl <- terra::vect(system.file("extdata/cyl.gpkg", package = "tidyterra"))

library(ggplot2)

ggplot(cyl) +
  stat_spat_coordinates()

ggplot(cyl) +
  geom_errorbarh(
    aes(
      geometry = geometry,
      xmin = after_stat(x) - 50000,
      xmax = after_stat(x) + 50000,
      y = after_stat(y),
      height = 10000
    ),
    stat = "sf_coordinates"
  )

dieghernan/tidyterra documentation built on Feb. 20, 2025, 4:18 p.m.