srtmVN

Installation and loading

You can install srtmVN from GitHub

# install.packages("devtools")
devtools::install_github("epix-project/srtmVN", build_vignettes = TRUE)

Once installed, you can load the package:

library(srtmVN)

Usage examples

The RasterLayer DEM from SRTM can be retrieved with the getsrtm function:

srtm <- getsrtm()
#> Loading required package: raster
#> Loading required package: sp

It’s a RasterLayer object:

srtm
#> class      : RasterLayer 
#> dimensions : 17796, 8790, 156426840  (nrow, ncol, ncell)
#> resolution : 0.0008333333, 0.0008333333  (x, y)
#> extent     : 102.1446, 109.4696, 8.562917, 23.39292  (xmin, xmax, ymin, ymax)
#> crs        : +proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0 
#> source     : /Library/Frameworks/R.framework/Versions/3.6/Resources/library/srtmVN/extdata/srtm90.tif 
#> names      : srtm90 
#> values     : -129, 3106  (min, max)

that can be plotted with the plot method:

plot(srtm)