FlowScreen (version 1.2.6)

MAMn: Calculate mean annual minimum n-day flows

Description

This function calculates the calculates the mean annual minimum n-day flow by calendar year or by hydrologic year. This function can also be used to find the annual minimum series by setting n=1.

Usage

MAMn(TS, n = 7, by = "hyear")

Value

Returns a numeric vector containing the calculated MAM n-day flow for each year in the input time series. The "times" attribute provides the corresponding year for each calculated value.

Arguments

TS

output from create.ts containing a data.frame of flow time series

n

Numeric value for the number of days in the n-day flow period. Default is 7.

by

Character string indicating whether to use hydrologic years or calendar years. Default is "hyear". Other option is "year".

Author

Jennifer Dierauer

See Also

screen.metric

Examples

data(cania.sub.ts)

# find the annual minimum series and plot 
res <- MAMn(cania.sub.ts, n=1)
res2 <- screen.metric(res, "Q (m3/s)")

# do the same with MAM 7-day flow instead of annual minimum
res <- MAMn(cania.sub.ts, n=7)
res2 <- screen.metric(res, "Q (m3/s)")