annual.mean: Annual mean of flow records

In RiverLoad: Load Estimation of River Compounds with Different Methods

Description

The function returns the annual arithmetic mean of flow records. It is also possible to obtain the standard deviation.

Usage

annual.mean(flow.data, standev)

Arguments

flow.data	A dataframe with a first column with DateTime information in standard format(yyyy-mm-dd HH:MM:SS) labeled "datetime" and a second column with flow records labelede "flow".
standev	An optional argument. If the user specifies "sd", the function will return the value of the standard deviation for each row.

Value

A data frame with two columns: the first with the years (labeled "year") and the second with annual mean flow data (labeled "flow"). If the user has specified "sd", there is a third column with standard deviation value for each row (labeled "sd").

Author(s)

Veronica Nava

See Also

daily.mean monthly.mean monthly.year.mean

Examples

data("flow.data1")
annual.mean(flow.data1)
annual.mean(flow.data1, "sd")

RiverLoad documentation built on Jan. 4, 2022, 5:07 p.m.