dem: DEM for the 'landslides' dataset

In RSAGA: SAGA Geoprocessing and Terrain Analysis

DEM for the landslides dataset

Description

Digital elevation model (DEM) for the landslides dataset's study area in southern Ecuador

Usage

dem

Format

Digital elevation model given as a list consisting of the elements header (nine properties) and data (grid elevation values in m a.s.l.). The 10 m x 10 m digital elevation model was triangulated from aerial imagery as described by Jordan et al. (2005) and provided as a courtesy of Lars Ungerechts (2010).

Details

Landslide data provided here are a subset of that used by Muenchow et al. (2012) to predict spatially landslide susceptibility using generalized additive models (GAMs). Specifically, the here provided landslides belong to the "natural" part of the RBSF area. Please refer also to the accompanying vignette for an introductory tutorial on the use of the RSAGA package for terrain analysis, geoprocessing, and model-building using these data.

Note

Loading landslides replaces any existing objects in the current work environment named dem, landslides, and study_area.

Source

Ungerechts, L. (2010): DEM 10m (triangulated from aerial photo - b/w). Retrieved from ⁠http://vhrz669.hrz.uni-marburg.de/tmf_respect/data_pre.do?citid=901⁠

Jordan, E., Ungerechts, L., Caceres, B. Penafiel, A. and Francou, B. (2005): Estimation by photogrammetry of the glacier recession on the Cotopaxi Volcano (Ecuador) between 1956 and 1997. Hydrological Sciences 50, 949-961.

See Also

landslides

Examples

## Not run: 
library("RSAGA")
data(dem)

# Print the DEM header:
dem$header

# Write the DEM to a SAGA grid:
write.sgrd(data = dem, file = "dem", header = dem$header, env = env)

# Calculate slope of DEM:
rsaga.slope(in.dem = "dem", out.slope = "slope", method = "poly2zevenbergen")

## End(Not run)

RSAGA documentation built on April 3, 2025, 6:48 p.m.