surrogate_to_analyte_interpolation {realTimeloads}

Interpolate timeseries x(tx) onto y(ty)

Description

Interpolate timeseries x(tx) onto y(ty) with temporal threshold on interpolation

Usage

surrogate_to_analyte_interpolation(tx, x, ty, y, threshold)

Arguments

tx

time for x "surrogate" (time, POSIXct)

x

quantity used to estimate y, for example, accoustic backscatter

ty

time for y "analyte" (time, POSIXct)

y

measured quantity, for example, an analyte such as suspended-sediment concentration

threshold

maximum duration where interpolation is allowed (minutes)

Value

a data frame with surrogate (x) interpolated onto timestep of analyte (y), interpolated values exceeding threshold are excluded from the output

Author(s)

Daniel Livsey (2023) ORCID: 0000-0002-2028-6128

Examples

tx <- as.POSIXct(seq(0,24*60^2,60*1), origin = "2000-01-01",tz = "Australia/Brisbane")
x <- sin(1:length(tx))
ty <- as.POSIXct(seq(0,24*60^2,60*15), origin = "2000-01-01",tz = "Australia/Brisbane")
y <- seq(0,24*60^2,60*15)
threshold <- 10
calibration <- surrogate_to_analyte_interpolation(tx,x,ty,y,threshold)