View source: R/extract-elevation.R
extract_condem | R Documentation |
Extract (crop and mask) a geographic subset of a Raster object.
extract_condem(condem = rawdem_br, poly_station, dis.buf = 0)
condem |
character, path file of hydrologically conditioned elevation model (CON) from Hydrosheds data set. Default: raster("~/Dropbox/datasets/GIS/hydrosheds/sa_con_3s_hydrosheds.grd"). |
poly_station |
a sf polygon or a raster extent, Default: extract_poly(station = 74). |
dis.buf |
scalar numeric. |
This function was created with the intention of use to create the
input NETCDF file for the FUSE model, elevation_bands.nc
. The function for
processing of hydrosheds CON raster is available at data-raw/con-hydrosheds.R
.
The resulting CON raster for South America (sa_con_3s_hydrosheds.gr*,
spatial resolution of ~90 m) can be downloaded
here.
Raster object.
The CON raster file is not distributed with the package due to its huge size (12.5 GB).
prep_poly_posto
,
mask
,crop
## Not run: if(FALSE){ info_posto <- info_station(name_regex = "MUNHOZ") poly_posto <- extract_poly(station = info_posto$posto) rawdem_br <- raster( system.file("extdata", "BRA_msk_alt.grd", package = "HEgis") ) con_posto <- extract_condem( rawdem_br, poly_posto, dis.buf = 0 ) con_posto } ## End(Not run)
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