compare_regression_models_ETR_I: Compare Regression Models for ETR I

In pam: Fast and Efficient Processing of PAM Data

Compare Regression Models for ETR I

Description

Compares multiple regression models for electron transport rate (ETR) data using predefined performance metrics.

Usage

compare_regression_models_ETR_I(data_dir)

Arguments

data_dir

A character string specifying the directory containing input data files.

Details

This function compares the performance of the following models:

• Eilers-Peeters (1988)

• Platt (1980)

• Vollenweider (1965)

• Walsby (1997)

Models are ranked based on the deviation between observed and predicted values. The results guide users in selecting the most appropriate model for their dataset. Start values for parameters cannot be adjusted within this function. A detailed documentation can be found under https://github.com/biotoolbox/pam?tab=readme-ov-file#walsby_modified

Value

A vector with total points assigned to each regression model based on their performance. Models are ranked as follows:

• 1st place: 3 points

• 2nd place: 2 points

• 3rd place: 1 point

• 4th place: 0 points

If regression is not possible for a model, no points are awarded for any of the models for the respective file.

References

Eilers, P. H. C., & Peeters, J. C. H. (1988). A model for the relationship between light intensity and the rate of photosynthesis in phytoplankton. Ecological Modelling, 42(3-4), 199-215. Available at: \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1016/0304-3800(88)90057-9")}

Platt, T., Gallegos, C. L., & Harrison, W. G. (1980). Photoinhibition of photosynthesis in natural assemblages of marine phytoplankton. Journal of Marine Research, 38(4). Available at: https://elischolar.library.yale.edu/journal_of_marine_research/1525/.

Romoth, K., Nowak, P., Kempke, D., Dietrich, A., Porsche, C., & Schubert, H. (2019). Acclimation limits of Fucus evanescens along the salinity gradient of the southwestern Baltic Sea. Botanica Marina, 62(1), 1-12. Available at: \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1515/bot-2018-0098")}.

Vollenweider, R. A. (1965). Calculation models of photosynthesis-depth curves and some implications regarding day rate estimates in primary production measurements. In C. R. Goldman (Ed.), Primary Productivity in Aquatic Environments (pp. 427-457). Mem. Ist. Ital. Idrobiol., 18 Suppl., University of California Press, Berkeley.

Walsby, A. E. (1997). Numerical integration of phytoplankton photosynthesis through time and depth in a water column. New Phytologist, 136(2), 189-209. Available at: \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1046/j.1469-8137.1997.00736.x")}.

Examples

path <- file.path(system.file("extdata", package = "pam"))
points <- compare_regression_models_ETR_I(path)

pam documentation built on April 4, 2025, 2:12 a.m.