CTF {hydrostats}

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)