create_flow_direction: Create the flow direction of each gridcell for VIC routing...

In Sibada/sibadaR: Sibada's accumulated R scripts for next probably use to avoid reinventing the wheel.

Description

Create the flow direction data of each VIC gridcell for the routing model of VIC by providing a high resolution flow accumulation data (about 90m usually caculated from SRTM DEM by ArcGIS) and the domain file of VIC model. WARNING: This is a simple heuristic method and more fit for small gridcell. It's usually needs further manual calibration by set_direc and plot_flow_direc.

Usage

create_flow_direction(flow_file, domain_file, arc_code = TRUE,
  diag_tsh = 0.382)

Arguments

flow_file	An netCDF4 file of the flow accumulation data from high resolution DEM (about 90m). Must containing all the area.
domain_file	Domain file (netCDF4 format) of VIC model.
arc_code	If the direction code is ArcInfo type. If FALSE, it would set to 1 to 8.
diag_tsh	Diag threshould. Determine if flow to the diag gridcell.

Value

A list including the meta parameters (num of rows and columns, size of the cells, x and y corner) and the matrix of the flow direction data.

Sibada/sibadaR documentation built on Jan. 31, 2020, 6:40 p.m.