flowlength: Calculates the flow distance towards the catchment outlet
In topmodel: Implementation of the Hydrological Model TOPMODEL in R
flowlength R Documentation
Calculates the flow distance towards the catchment outlet
Description
Given a digital elevation model and the coordinates of the catchment outlet,
this function calculates the flowlength of each gridcell to the outlet, based
on a single flow direction algorithm (D8).
Usage
flowlength(DEM,outlet)
Arguments
DEM
A matrix representing a digital elevation model [m] with equally sized pixels and equal NS and EW resolution
outlet
A vector containing the row and column indices of the pixel
representing the catchment outlet.
Details
The function returns the flowlength in cell size units. So you have to multiply by the map resolution to get the flow in meters.
Value
A matrix of the same size as DEM
Author(s)
Wouter Buytaert, Imperial College London, based on an implementation from the Hydrology Group of Lancaster University
References
See https://github.com/ICHydro/topmodel for examples.
See Also
sinkfill, river
topmodel documentation built on Nov. 16, 2022, 9:08 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
| flowlength | R Documentation |
Calculates the flow distance towards the catchment outlet
Description
Given a digital elevation model and the coordinates of the catchment outlet, this function calculates the flowlength of each gridcell to the outlet, based on a single flow direction algorithm (D8).
Usage
flowlength(DEM,outlet)
Arguments
DEM |
A matrix representing a digital elevation model [m] with equally sized pixels and equal NS and EW resolution |
outlet |
A vector containing the row and column indices of the pixel representing the catchment outlet. |
Details
The function returns the flowlength in cell size units. So you have to multiply by the map resolution to get the flow in meters.
Value
A matrix of the same size as DEM
Author(s)
Wouter Buytaert, Imperial College London, based on an implementation from the Hydrology Group of Lancaster University
References
See https://github.com/ICHydro/topmodel for examples.
See Also
sinkfill, river
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.