hyear_start: Extract or guess the Start of a Hydrological Year

In lfstat: Calculation of Low Flow Statistics for Daily Stream Flow Data

Description

Retrieve the start of a hydrological year either from the attributes or from the column 'hyear' of an object of class lfobj.

Usage

hyear_start(x, abbreviate = FALSE)

## S3 method for class 'data.frame'
hyear_start(x, abbreviate = FALSE)

## S3 method for class 'xts'
hyear_start(x, abbreviate = FALSE)

hyear_start(x) <- value
## S3 replacement method for class 'xts'
hyear_start(x) <- value
## S3 replacement method for class 'lfobj'
hyear_start(x) <- value

Arguments

x	object of which the start of the hydrological year should be determined.
abbreviate	logical. Should the names be abbreviated?
value	numeric vector of length one. Month in which the hydrological year starts.

Details

If a valid start of an hydrological year is found in the attributes, it is returned. Otherwise if a column hyear exists, it is used. If this is note possible the integer number one is returned (for January) and a warning is issued.

Value

a vector of length one, either of type character (abbreviate = TRUE) or numeric.

See Also

water_year

Examples

data(ngaruroro)
hyear_start(ngaruroro)

data(ray)
hyear_start(ray, abbreviate = TRUE)

Example output

Loading required package: xts
Loading required package: zoo

Attaching package: 'zoo'

The following objects are masked from 'package:base':

    as.Date, as.Date.numeric

Loading required package: lmom
Loading required package: lattice
[1] 9
[1] "Jan"

lfstat documentation built on May 2, 2019, 6:07 p.m.