add Copernicus Digital Elevation Model

[TomBor]

Copernicus DEM has recently extended is public dataset to GLO-30 in addition to GLO-90.
It could be great to have this source available in elevatr alongside Terrain Tiles and OpenTopography.

https://registry.opendata.aws/copernicus-dem/

[jhollist]

Thanks for the suggestion. I will take a look at this for a possible inclusion in a future release.

[cjcrosby]

FWIW, Copernicus DEM (GLO-30 & GLO-90) are both accessible via the OpenTopography Global Datasets API. There are 11 regional & global datasets available in total: https://portal.opentopography.org/apidocs/#/Public/getGlobalDem Since elevatr is already hitting the OT API, I assume exposing these other datasets in addition to SRTM and ALOS World 3D should be straightforward by adding them as a source?

data_set <- switch(src,
gl3 = "SRTMGL3",
gl1 = "SRTMGL1",
alos = "AW3D30",
srtm15plus = "SRTM15Plus")