write_raster {hillshader}

Write hillshade to a file

Description

Write an array from a hillshade procedure to a geospatial raster file.

Usage

write_raster(hillshade, elevation, filename, format, ...)

Arguments

hillshade

A 2D matrix of shadow intensities.

elevation

Original elevation raster.

filename

Character. Output filename.

format

Character. Output file type. Passed to raster::writeRaster.

...

Additional arguments passed to raster::writeRaster.

Value

This function is used for the side-effect of writing values to a file.

Author(s)

Pierre Roudier

Examples

library(rayshader)

out_fn <- paste0(tempfile(), ".tif")

# Create elevation matrix
el_mat <- maungawhau %>%
 raster_to_matrix()

 el_mat %>%
 # Create hillshade layer using
 # ray-tracing
 ray_shade() %>%
 # Add ambient shading
 add_shadow_2d(
   ambient_shade(
     heightmap = el_mat
   )
 ) %>%
 write_raster(
   elevation = maungawhau,
   filename = out_fn
 )