remove_plateaus: Remove sensor-caused plateaus (steps) in hydrographs.
In RHydro: Classes and methods for hydrological modelling and analysis

Description Usage Arguments Details Value Author(s) Examples

This filter removes sensor-caused plateaus (steps) in hydrographs, which may have originated from low-resolution sensors. Opposed to other filters, peak values are preserved.

1	remove_plateaus(runoff, method="start")

`runoff`	vector of hydrograph
`method`	see details

remove_plateaus(..., method="start") eliminates plateaus by interpolating linearly between the start of a plateau and the first following non-plateau-value. remove_plateaus(..., method="center") tries to include the points before, in the middle and after plateaus in the interpolation.

Vector of cleansed hydrograph without plateaus.

Dominik Reusser, Till Francke

runoff          <- c(rep(1,3), 2, 3, rep(4,4), 5, rep(3,4), rep(NA,2), 4, rep(2,5), rep(1,6))
runoff_cleaned_start  <- remove_plateaus(runoff)
runoff_cleaned_center <- remove_plateaus(runoff, method="center")

plot(runoff, type="l")
lines(runoff_cleaned_start, col="red")
lines(runoff_cleaned_center, col="green", lty="dashed")