bem_data: Download and load digital elevation data of Berlin
In Ignimbrit/rbem: Access High Resolution DEM data of Berlin in R

Description Usage Arguments Details Value Examples

View source: R/fetch_dem.R

Download and load digital elevation data of Berlin

bem_data(
  x,
  directory = "BEMdata",
  read = TRUE,
  output_format = "raster",
  merge_output = TRUE
)

`x`	The target area for which dem data are to be downloaded. Either created with `bem_target` or any object which can be passed to `sf::st_bbox`
`directory`	A string giving the path to the directory where downloaded .zip files should be saved to
`read`	Logical. Should the downloaded data be read into R?
`output_format`	Character specifying the output format. Default "raster" will return output as raster::`Raster-class`. The alternative is "tbl" which will return a tibble::`tibble-package` of xyz coordinates instead.
`merge_output`	Logical. If `TRUE`, all downloaded tiles will be merged in a single object. If `FALSE`, a list of objects with one entry per tile will be returned

This function will identify targeted tiles of the 1m resolution digital elevation model of Berlin that are distributed by the Geoportal Berlin ("Geoportal Berlin / ATKRIS(R) DGM (1m-Rasterweite)" https://www.govdata.de/dl-de/by-2-0) and download them into a specified directory (default is "BEMdata/"). It will then attempt to load all downloaded data into R and return it in a meaningful format that should make further processing easy.

Either a raster::`Raster-class`, a tibble::`tibble-package` or a list of any of those things, depending on output_format. If read = FALSE, x is returned invisible.

## Not run: 
my_area_of_interest <- bem_target(
xmin = 384000, 
xmax = 386000, 
ymin = 5806000, 
ymax = 5808000)

# Careful! This will kick of ~ 100 MB download!
result <- bem_data(my_area_of_interest)

# In this case the result can be examined e.g. with the help of

# raster::plot(result)

# or

# mapview::mapview(result)
     

## End(Not run)