| taiwan_model {ChillModels} | R Documentation |
Taiwan model
Description
Quantifies the chill accumulation by means of converting temperatures to chill-units.
Usage
taiwan_model(x, total = TRUE)
Arguments
x |
Vector containing temperature values (Celsius-degree). |
total |
TRUE Shows the total value of accumulation, FALSE shows the value of chill-unit for each temperature (TRUE is default). |
Details
The model is based on chill-units, where 1 chill-unit is when the tree is exposure below 7.2°C. When the temperature is between 15.1°C and 26.6°C, there isn't accumulation of chill-unit. The chill-units accumulation is negative when occurs temperature above 26.7°C, and the chill-unit is -1 when occurs temperature above 27.8°C.
Value
The function returns values the chill-units for each temperature of vector (Total = FALSE), or returns the chill-units accumulation (Total = TRUE).
References
LU, M. T. et al. 2012. A model for estimating chilling requirement of very low-chill peaches in Taiwan. Acta Horticulturae, n. 962, p. 245.
Examples
x <- rnorm(500, 20, 7)
taiwan_model(x)
taiwan_model(x, FALSE)