Runout Geometry

Computes runnout attributes: width, length, area, max. min. elevation, and surface area using Spatial Polygons and a DEM

runoutGeom(runout_plys, elev, ID = NULL)

Arguments

runout_plys	A SpatialPolygonsDataFrame of runout tracks
elev	A RasterLayer DEM
ID	NOT SURE...

Value

A data frame containing runout geometries

Examples

# Load elevation model (DEM)
dem <- raster::raster(system.file("extdata/elev_12_5m.tif", package="runout.opt"))

# Load runout polygons
file_nm <- system.file("extdata/dflow_runout_ply.shp", package="runout.opt")
slide_plys <- rgdal::readOGR(file_nm)
#> OGR data source with driver: ESRI Shapefile 
#> Source: "/home/jason/R/x86_64-pc-linux-gnu-library/4.0/runout.opt/extdata/dflow_runout_ply.shp", layer: "dflow_runout_ply"
#> with 6 features
#> It has 27 fields
#> Integer64 fields read as strings:  FID_1 OBJECTID OBJECTID_1 FID_2 OBJECTID_2 ID ID_COL Dif_rango 
#> Warning: Z-dimension discarded

slide_geom <- runoutGeom(slide_plys, dem)
slide_geom
#>   fid id    width   length     area surfacearea maxelev minelev reachangle
#> 1   0  1 465.2282 2758.220 524921.5    588836.5    3635    2205   27.40450
#> 2   1  2 307.4041 2811.722 138838.5    159381.3    3755    2227   28.52140
#> 3   2  3 527.2579 3116.045 652965.1    748991.1    4000    2186   30.20575
#> 4   3  4 382.0606 2690.692 197743.9    217936.0    3577    2219   26.78021
#> 5   4  5 276.1625 2641.502 177993.7    196479.0    3479    2212   25.62477
#> 6   5  6 195.9905 1761.484 201892.2    238286.3    3194    2172   30.12198