annualExtremes: Calculate annual extreme flows.

In discharge: Fourier Analysis of Discharge Data

Description

Calculates annual extreme events for all years in the series. By default, the function finds annual extreme discharge in streamflow object, but any matrix or data.frame may be used.

Usage

annualExtremes(x,data.col=NULL, year.col=NULL, moving.avg=FALSE)

Arguments

x	Object from which to extract extremes. Should be of class streamflow or data.frame or matrix.
data.col	Optional. If input is a matrix or data.frame, specifies which column contains the data.
year.col	Optional. If input is a matrix or data.frame, specifies which column contains the year.
moving.avg	Logical; defaults to FALSE. Can be specified TRUE to use 7-day moving average discharge when input is of class "streamflow".

Value

A list with items

annual.max	Matrix giving maximum flow for each year in series. Each row contains the maximum values and all corresponding variables from that observation.
annual.min	Matrix giving minimum flow for each year in series. Each row contains the minimum values and all corresponding variables from that observation.

Examples

data(sycamore)
sycamore.flows<-asStreamflow(sycamore,river.name="Sycamore Creek")
syc.extremes<-annualExtremes(sycamore.flows)
names(syc.extremes)
syc.extremes$annual.max[1:3,]

discharge documentation built on May 2, 2019, 5:54 a.m.