vollenweider_modified {pam} | R Documentation |
Vollenweider Model Modification
Description
This function adds parameters that were not originally included in the Vollenweider (1965) model, but were introduced by other models, and renames the parameters to a standardized one for all models.
Usage
vollenweider_modified(model_result)
Arguments
model_result |
A list containing the results of the model, including parameters such as |
Details
A detailed documentation can be found under https://github.com/biotoolbox/pam?tab=readme-ov-file#vollenweider_modified
Value
A modified model result as a list containing 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
: Obtained parametera
, here equal toetrmax_without_photoinhibition
. -
b
: Obtained parameterb
, transferred asa
. -
c
: Obtained parameterc
, here transferred asalpha
. -
d
: Obtained parameterd
, here transferred asn
. -
alpha
: The initial slope of the light curve. -
beta
: Not available, here set toNA_real_
. -
etrmax_with_photoinhibition
: The maximum electron transport rate with photoinhibition, transferred aspopt
. -
etrmax_without_photoinhibition
: The maximum electron transport rate without photoinhibition, transferred aspmax
. -
ik_with_photoinhibition
: PAR where the transition point from light limitation to light saturation is achieved taking photoinhibition into account, transferred asiik
. -
ik_without_photoinhibition
: PAR where the transition point from light limitation to light saturation is achieved not taking photoinhibition into account, transferred asik
. -
im_with_photoinhibition
: The PAR at which the maximum electron transport rate is achieved by taking photoinhibition into account, determined using the regression data from the model. -
w
: Not available, here set toNA_real_
. -
ib
: Transferred unchanged asib
. -
etrmax_with_without_ratio
: Ratio ofetrmax_with_photoinhibition
toetrmax_without_photoinhibition
andik_with_photoinhibition
toik_without_photoinhibition
.
Examples
path <- file.path(system.file("extdata", package = "pam"), "20240925.csv")
data <- read_dual_pam_data(path)
result <- vollenweider_generate_regression_ETR_II(data)
modified_result <- vollenweider_modified(result)