fit_water_regression {NEONiso}

fit_water_regression

Description

fit_water_regression

Usage

fit_water_regression(
  ref_data,
  calibration_half_width,
  slope_tolerance,
  r2_thres,
  plot_regression_data = FALSE,
  plot_dir = "/dev/null",
  site,
  min_nobs = NA
)

Arguments

ref_data

Reference data.frame from which to estimate calibration parameters.

calibration_half_width

Determines the period (in days) from which reference data are selected (period is 2*calibration_half_width).

slope_tolerance

Allows for filtering of slopes that deviate from 1 by slope_tolerance.

r2_thres

What is the minimum r2 value permitted in a 'useful' calibration relationship.

plot_regression_data

True or false - should we plot the data used in the regression? Useful for debugging.

plot_dir

If plot_regression_data is true, where should the plots be saved?

site

Needed for regression plots.

min_nobs

Minimum number of high-frequency observations to define a peak.

Value

Returns a data.frame of calibration parameters. Output data.frame includes slope, intercept, and r^2 values for d13C and CO2 values.