TimeInterval: Time Interval

In pvldcurve: Simplifies the Analysis of Pressure Volume and Leaf Drying Curves

Description

Calculates time intervals (min) between temporally repeated measurements

Usage

TimeInterval(data, sample = "sample", date.and.time = "date.and.time")

Arguments

data	data frame containing at least a column giving the time (and date) (class POSIXct) of the measurements ordered by sample and chronologically. A column containing the sample IDs is optionally required if several samples were measured.
sample	optional name of the column in data containing the sample ID, default: "sample"
date.and.time	optional name of the column in data containing the time (and date) as class POSIXct, default: "date.and.time"

Value

the original data frame extended by a numerical vecor containing the time intervals (min) between the measurements of a sample. The first values of each sample is NA since time intervals are computed from row i and i-1.

Examples

# get example data
df <- leaf_drying_data

# extend df by time interval
df_with_ti <- TimeInterval(df)

pvldcurve documentation built on Oct. 23, 2020, 8:09 p.m.