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spphpr (version 1.0.0)

Spring Phenological Prediction

Description

Predicts the occurrence times (in day-of-year) of spring phenological events. Three methods, including the accumulated degree days (ADD) method, the accumulated days transferred to a standardized temperature (ADTS) method, and the accumulated developmental progress (ADP) method, were used. See Shi et al. (2017a) and Shi et al. (2017b) for details.

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Version

Install

install.packages('spphpr')

Monthly Downloads

301

Version

1.0.0

License

GPL (>= 2)

Maintainer

Peijian Shi

Last Published

January 8th, 2025

Functions in spphpr (1.0.0)

predADD

Prediction Function of the Accumulated Degree Days Method
predADP

Prediction Function of the Accumulated Developmental Progress Method
toDOY

Function for Transferring a Date to the Value of Day-of-Year
apricotFFD

First flowering date records of Prunus armeniaca
predADTS

Prediction Function of the Accumulated Days Transferred to a Standardized Temperature Method
ADD

Function for Implementing the Accumulated Degree Days Method
ADP

Function for Implementing the Accumulated Developmental Progress Method
spphpr

Spring Phenological Prediction
ADTS

Function for Implementing the Accumulated Days Transferred to a Standardized Temperature Method
BJDAT

Daily Air Temperature Data of Beijing from 1952 to 2012.