eilers_peeters_modified: Eilers & Peeters Model Modification

In pam: Fast and Efficient Processing of PAM Data

Eilers & Peeters Model Modification

Description

This function enhances the Eilers and Peeters (1988) model by adding parameters not originally included in the model, which were introduced by other models. It also renames parameters to a standardized naming convention used across all models.

Usage

eilers_peeters_modified(model_result)

Arguments

model_result

A list containing the results of the model, including parameters such as a, b, c, s, pm, ik, im, and w.

Details

A detailed documentation can be found under https://github.com/biotoolbox/pam?tab=readme-ov-file#eilers_peeters_modified

Value

A modified model result as a list with the following elements:

• etr_type: ETR Type based on the model result.

• etr_regression_data: Regression data with ETR predictions based on the fitted model.

• sdiff: The difference between observed and predicted ETR values.

• a: The obtained parameter a.

• b: The obtained parameter b.

• c: The obtained parameter c.

• d: Not available, set to NA_real_.

• alpha: The initial slope of the light curve, transferred unchanged as s.

• beta: Not available, set to NA_real_.

• etrmax_with_photoinhibition: The maximum electron transport rate with photoinhibition, transferred as pm.

• etrmax_without_photoinhibition: Not available, set to NA_real_.

• ik_with_photoinhibition: PAR where the transition point from light limitation to light saturation is achieved with photoinhibition, transferred as ik.

• ik_without_photoinhibition: Not available, set to NA_real_.

• im_with_photoinhibition: The PAR at which the maximum electron transport rate is achieved with photoinhibition, transferred as im.

• w: The sharpness of the peak, transferred as w.

• ib: Not available, set to NA_real_.

• etrmax_with_without_ratio: Not available, set to NA_real_.

Examples

path <- file.path(system.file("extdata", package = "pam"), "20240925.csv")
data <- read_dual_pam_data(path)

result <- eilers_peeters_generate_regression_ETR_II(data)
modified_result <- eilers_peeters_modified(result)

pam documentation built on Aug. 27, 2025, 5:10 p.m.