offset_subsetting: offset_subsetting

In valentingar/ConFluxPro: A toolkit for soil gas analysis

offset_subsetting

Description

This function helps to create the corr_map dataframe for the offset correction. Based on the Date input, it creates a new section variable and maps it to all SAMPLE_NO.

Usage

offset_subsetting(df, start, end, mode)

Arguments

df	(dataframe) The gasdata-dataframe.
start	(vector, Date) A vector of type Date that specifies the starting date of each section (the starting date is included in the section!).
end	(vector, Date) A vector of type Date that specifies the end date of each section (the end date is included in the section!). The start date of element i should be the end date of (i-1) +1 day.
mode	(vector, character) A vector of type character that specifies the correction method to be used in each section. Valid methods are "const", here the median value is being used as a constant factor, and "lin", where a linear model is fit against time, to account for an temporal drift.

Value

df (dataframe) The corr_map dataframe used in the offset_correction() function

See Also

offset_correction

offset_override

Other gasdata: balance_correction(), offset_correction()

Examples

{
data("gasdata")

library(dplyr)

gasdata <- gasdata %>%
  mutate(depth_cat = ifelse(depth>0,"HU","MIN"),
         SAMPLE_NO = row_number())

cmap <-
  offset_subsetting(gasdata,
                    start = "2021-01-01",
                    end = "2022-01-01",
                    mode = "const")

offset_correction(gasdata,
                  corr_map = cmap,
                  gases = "CO2",
                  gases_std = 400e-6,
                  depth_cal = "HU")

}

valentingar/ConFluxPro documentation built on Dec. 1, 2024, 9:35 p.m.