cat_shp: Basin Shape Metrics

Description Usage Arguments Details Value

View source: R/WatershedScale_Functions.r

Description

Calculates metrics the describe the shape of a networks waterhsed.

Usage

1
cat_shp(network, NHDCatchments)

Arguments

network

a single network extracted from NHDPlusV2

NHDCatchments

NHDPlusV2 catchment coverage, Catchment.shp

Details

Compactness coefficient (CmpC) is defined as the ratio of the watershed perimeter to the circumference of equivalent circular area.

Elongation ratio (ElnR) is defined as the ratio of diameter of a circle of the same area as the watershed to the maximum watershed length. The numerical value varies from 0 (in highly elongated shape) to 1 (in circular shape).

Circulatory ratio (CrcR) is defined as the ratio of watershed area to the area of the circle having the same perimeter as the watershed perimeter. The numeric value may vary in between 0 (in line) and 1 (in a circle).

Value

sf object of watershed attributed with width (width), maximum length (mxln), area (area), parimeter (prmt), compactedness coefficient (CmpC), circularoty ratio (CrcR), and elongation ratio (ElnR). Where applicable, units = m


dkopp3/MMASN documentation built on Dec. 20, 2021, 12:07 a.m.