be_high_low: be_high_low

In jkennel/waterlevel: Well Water Level Analysis Tools

Description

Uses the maximum and minimum values for a time period to calculate be.

Usage

be_high_low(dat, dep = "wl", ind = "baro", time = "datetime",
  time_group = "%Y-%m-%d")

Arguments

dat	data that has the independent and dependent variables (data.table)
dep	name of the dependent variable column (character). This is typically the name for the column holding your water level data.
ind	name of the independent variable column (character). This is typically the name for the column holding your barometric pressure data.
time	name of the column containing the time (character)
time_group	format for grouping time (ie: "%Y-%m-%d") (character)

Value

barometric efficiency based on high and low values

Examples

library(data.table)
datetime <- seq.POSIXt(as.POSIXct("2016-01-01 00:00:00", tz = 'UTC'),
                       as.POSIXct("2016-01-06 00:00:00", tz = 'UTC'), by='hour')
baro  <- sin(seq(0, 2*pi, length.out = length(datetime)))
wl    <- 0.4 * baro + rnorm(length(datetime), sd = 0.01)
dat   <- data.table(baro, wl, datetime)
be_hl <- be_high_low(dat)
be_hl <- be_high_low(dat, time_group = 86400)

jkennel/waterlevel documentation built on Dec. 1, 2019, 6:24 p.m.