apricotFFD {spphpr} | R Documentation |
First flowering date records of Prunus armeniaca
Description
The data consist of the first flowering date records of Prunus armeniaca
at the Summer Palace (39{}^{\circ}
54'
38''
N,
116{}^{\circ}
8'
28''
E, 50 m a.s.l.) in Beijing of China
between 1963 and 2010. Data source: Chinese Phenological Observation Network (Guo et al., 2015).
Usage
data(apricotFFD)
Details
In the data set, there are two columns of vectors: Year
, and Time
.
Code
saves the recording years; and
Time
saves 1963-
2010 first flowering dates of Prunus armeniaca in day of year.
References
Guo, L., Xu, J., Dai, J., Cheng, J., Wu, H., Luedeling, E. (2015) Statistical identification of chilling
and heat requirements for apricotflower buds in Beijing, China.
Scientia Horticulturae 195, 138-
144. doi:10.1016/j.scienta.2015.09.006
Examples
data(apricotFFD)
attach(apricotFFD)
dev.new()
par1 <- par(family="serif")
par2 <- par(mar=c(5, 5, 2, 2))
par3 <- par(mgp=c(3, 1, 0))
plot( Year, Time, asp = 1, cex.lab = 1.5, cex.axis = 1.5,
xlab = "Year", ylab = "First flowering date (day of year)" )
par(par1)
par(par2)
par(par3)
# graphics.off()
[Package spphpr version 0.1.4 Index]