fit_carbon_regression: fit_carbon_regression

In SPATIAL-Lab/NEONiso: Tools to Calibrate and Work with NEON Atmospheric Isotope Data

fit_carbon_regression

Description

fit_carbon_regression

Usage

fit_carbon_regression(
  ref_data,
  method,
  calibration_half_width,
  plot_regression_data = FALSE,
  plot_dir = "/dev/null",
  site,
  min_nobs = NA
)

Arguments

ref_data	Reference data.frame from which to estimate calibration parameters.
method	Are we using the Bowling et al. 2003 method ("Bowling_2003") or direct linear regression of d13C and CO2 mole fractions ("linreg")?
calibration_half_width	Determines the period (in days) from which reference data are selected (period is 2*calibration_half_width).
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. If method == "Bowling_2003", then data.frame includes gain and offset parameters for 12CO2 and 13CO2, and r^2 values for each regression. If method == "linreg", then data.frame includes slope, intercept, and r^2 values for d13C and CO2 values.

Author(s)

Rich Fiorella [e-mail]

SPATIAL-Lab/NEONiso documentation built on April 5, 2024, 5:28 a.m.