Description Usage Arguments Details Value Note References Examples
View source: R/dynamic_model.R
Quantifies the chill accumulation with dynamic equation (two-steps).
1 | dynamic_model(x, total = TRUE)
|
x |
Vector containing temperature values (Celsius-degree). |
total |
TRUE Shows the total value of accumulation, FALSE shows the value of chill for each temperature (TRUE is default). |
The model is based on dynamic accumulation, by means of the relationship between temperatures. The dynamic model assumes that the accumulated chill-units are not annulled by high temperatures.
The function returns values the chill for each temperature of vector (Total = FALSE), or returns the chill accumulation (Total = TRUE).
Code adapted from the function Dynamic_Model
, of the chillR Package
FISHMAN, Svetlana, EREZ, A. & COUVILLON, G. A. (1987). The Temperature Dependence of Dormancy Breaking in Plants: Computer Simulation of Processes Studied Under Controlled Temperatures. J. Theor. Biol.
LUEDELING, Eike (2018). chillR: Statistical Methods for Phenology Analysis in Temperate Fruit Trees. R package version 0.70.12. https://CRAN.R-project.org/package=chillR
1 2 3 | x <- rnorm(500, 10, 5)
dynamic_model(x)
dynamic_model(x, FALSE)
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