CTF: Cease-to-flow (CTF) spell statistics

In hydrostats: Hydrologic Indices for Daily Time Series Data

Cease-to-flow (CTF) spell statistics

Description

Calculates summary statistics describing cease-to-flow spell characteristics.

Usage

CTF(flow.ts, threshold = 0.1)

Arguments

flow.ts	Dataframe with date and discharge data in columns named "Date" and "Q" respectively. Date must be in POSIX format (see ts.format).
threshold	values below this threshold (default 0.1) are treated as zero for the purpose of defining cease to flow spells to account for the fact that cease to flow levels are poorly defined for many gauging sites.

Value

A dataframe with 5 columns (see below).

p.CTF	Proportion time cease to flows occur
avg.CTF	Average cease-to-flow spell duration
med.CTF	Median cease-to-flow spell duration
min.CTF	Minimum cease-to-flow spell duration
max.CTF	Maximum cease-to-flow spell duration

Author(s)

Nick Bond <[e-mail]>

Examples

data(Cooper)
Cooper<-ts.format(Cooper)

CTF(Cooper)
CTF(Cooper, threshold=0)

hydrostats documentation built on June 1, 2022, 9:06 a.m.