WQcompos: Combine multiple samples into one composite sample (loads and...

In USGS-R/USGSHydroTools: Collection of functions for hydrological analysis

Combine multiple samples into one composite sample (loads and concentrations)

Description

function to composite samples weighted by the associated volume the result is a volume-weighted concentration and summation of volumes

Usage

WQcompos(df.samples, sampleID, parms, volume = "Evolume", bdate, edate, codes)

Arguments

df.samples	dataframe with sample results and volumes
sampleID	character variable name for the IDs for compositing samples (multiple samples will have the same ID)
parms	vector Parameters to composite
volume	character variable name for the volume, defaults to "Evolume"
bdate	character variable name for the beginning of event times for each sample
edate	character variable name for the ending of event times for each sample
codes	a vector of character variable names for the values that should be pasted together into one string when combining samples (lab IDs are common here)

Value

IDdf dataframe

Examples

flowData <- flowData
FIBdata <- FIBdata
FIBcomposData <- Hydrovol(dfQ=flowData,Q="Q",time="pdate",
       df.dates=FIBdata,bdate="SSdate",edate="SEdate")
WQcompos(df.samples=FIBcomposData,sampleID="SampleID",
       parms=c("Ecoli","Enterococci"), volume="event.vol",
       bdate="SSdate",edate="SEdate",codes="SampleID")

USGS-R/USGSHydroTools documentation built on April 17, 2023, 8:09 p.m.