layer_spatial.Raster {ggspatial}

Spatial ggplot2 layer for raster objects

Description

This is intended for use with RGB(A) rasters (e.g., georeferenced imagery or photos). To work with bands as if they were columns, use df_spatial and geom_raster.

Usage

## S3 method for class 'Raster'
layer_spatial(
  data,
  mapping = NULL,
  interpolate = NULL,
  is_annotation = FALSE,
  lazy = FALSE,
  dpi = 150,
  ...
)

## S3 method for class 'Raster'
annotation_spatial(data, mapping = NULL, interpolate = NULL, ...)

StatSpatialRaster

StatSpatialRasterAnnotation

StatSpatialRasterDf

GeomSpatialRaster

Arguments

data

A Raster object

mapping

Currently, only RGB or RGBA rasters are supported. In the future, one may be able to map specific bands to the fill and alpha aesthetics.

interpolate

Interpolate resampling for rendered raster image

is_annotation

Lets raster exist without modifying scales

lazy

Delay projection and resample of raster until the plot is being rendered

dpi

if lazy = TRUE, the dpi to which the raster should be resampled

...

Passed to other methods

Format

An object of class StatSpatialRaster (inherits from Stat, ggproto, gg) of length 3.

An object of class StatSpatialRaster (inherits from StatSpatialRaster, Stat, ggproto, gg) of length 3.

An object of class StatSpatialRasterDf (inherits from Stat, ggproto, gg) of length 5.

An object of class GeomSpatialRaster (inherits from Geom, ggproto, gg) of length 5.

Value

A ggplot2 layer

Examples

library(ggplot2)
load_longlake_data(which = c("longlake_osm", "longlake_depth_raster"))
ggplot() + layer_spatial(longlake_osm)
ggplot() + layer_spatial(longlake_depth_raster) + scale_fill_continuous(na.value = NA)