ChillModels (version 1.0.2)

gala_model: Gala model

Description

Quantifies the chill accumulation by means of converting temperatures to chill-units.

Usage

gala_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).

Value

The function returns values the chill-units for each temperature of vector (Total = FALSE), or returns the chill-units accumulation (Total = TRUE).

Details

The model is based on chill-units, where 1 chill-unit is when the tree is exposure between -2.1<U+00B0>C and 5.5<U+00B0>C. When the temperature is above 18<U+00B0>C, the chill-unit is -1. The chill-units accumulation is 0 when occurs temperature between 13<U+00B0>C and 16<U+00B0>C.

References

GUAK, Sunghee & NEILSEN, Denise. (2013). Chill Unit Models for Predicting Dormancy Completion of Floral Buds in Apple and Sweet Cherry.

Examples

# NOT RUN {
x <- rnorm(500, 10, 5)
gala_model(x)
gala_model(x, FALSE)

# }