eilers_peeters_generate_regression_ETR_II {pam} | R Documentation |
Eilers-Peeters Regression for ETR II
Description
Fits a regression model for ETR II based on Eilers-Peeters (1988), considering photoinhibition.
Usage
eilers_peeters_generate_regression_ETR_II(
data,
a_start_value = eilers_peeters_default_start_value_a,
b_start_value = eilers_peeters_default_start_value_b,
c_start_value = eilers_peeters_default_start_value_c
)
Arguments
data |
A |
a_start_value |
Numeric. Starting value for |
b_start_value |
Numeric. Starting value for |
c_start_value |
Numeric. Starting value for |
Details
A detailed documentation can be found under https://github.com/biotoolbox/pam?tab=readme-ov-file#eilers_peeters_generate_regression_etr_i-and-eilers_peeters_generate_regression_etr_ii.
Value
A list containing:
-
etr_regression_data
: Predicted ETR values. -
sdiff
: Deviation between actual and predicted values. -
a
,b
,c
: Fitted parameters. -
pm
: Maximum ETR (p_m
). -
s
: Initial slope (s
). -
ik
: Transition point from light limitation to light saturation (I_k
). -
im
: PAR at maximum ETR (I_m
). -
w
: Peak sharpness (w
).
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: doi:10.1016/0304-3800(88)90057-9
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)