Spatial Hydrology functions

Description

These functions perform spatial analyses important in hydrology. All of the functions with the prefix ch_wbt require the installation of the package Whitebox. The functions include:

ch_wbt_removesinks

Removes sinks from a DEM by deepening drainage network

ch_wbt_fillsinks

Removes sinks from a DEM by filling them

ch_wbt_catchment

Generates catchment boundaries for a conditioned DEM based on specified points of interest

ch_wbt_channels

Generates a drainage network from DEM

ch_wbt_flow_accumulation

Accumulates flows downstream in a cathcment

ch_wbt_flow_direction

Calculated flow directions for each cell in DEM

ch_wbt_pourpoints

Snaps pour points to channel

ch_wbt_catchment_onestep

Performs all catchment delineations in a single function

ch_contours

Creates contour lines from DEM

ch_checkcatchment

Provides a simple map to check the outputs from ch_saga_catchment

ch_checkchannels

Provides a simple map to check the outputs from ch_saga_channels

ch_volcano_raster

Returns a raster object of land surface elevations

The Whitebox functions support the following file types for raster data:

type

extension

GeoTIFF

*.tif, *.tiff

Big GeoTIFF

*.tif, *.tiff

Esri ASCII

*.txt, *.asc

Esri BIL

*.flt, *.hdr

GRASS ASCII

*.txt, *.asc

Idrisi

*.rdc, *.rst

SAGA Binary

*.sdat, *.sgrd

Surfer ASCII

*.grd

Surfer Binary

*.grd

Whitebox

*.tas, *.dep