Learn R Programming

spphpr (version 1.1.4)

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.

Copy Link

Version

Install

install.packages('spphpr')

Monthly Downloads

301

Version

1.1.4

License

GPL (>= 2)

Maintainer

Peijian Shi

Last Published

April 6th, 2025

Functions in spphpr (1.1.4)

First flowering date records of Prunus armeniaca

Prediction Function of the Accumulated Degree Days Method Using Minimum and Maximum Daily Temperatures

Function for Implementing the Accumulated Degree Days Method Using Mean Daily Temperatures

Function for Implementing the Accumulated Degree Days Method Using Minimum and Maximum Daily Temperatures

Function for Implementing the Accumulated Developmental Progress Method Using Minimum and Maximum Daily Temperatures

Function for Implementing the Accumulated Developmental Progress Method Using Mean Daily Temperatures

Prediction Function of the Accumulated Degree Days Method Using Mean Daily Temperatures

Function for Implementing the Accumulated Days Transferred to a Standardized Temperature Method Using Mean Daily Temperatures

Daily Air Temperature Data of Beijing from 1952 to 2012.

Function for Implementing the Accumulated Days Transferred to a Standardized Temperature Method Using Minimum and Maximum Daily Temperatures

Prediction Function of the Accumulated Days Transferred to a Standardized Temperature Method Using Mean Daily Temperatures

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

Prediction Function of the Accumulated Days Transferred to a Standardized Temperature Method Using Minimum and Maximum Daily Temperatures

Prediction Function of the Accumulated Developmental Progress Method Using Minimum and Maximum Daily Temperatures

Spring Phenological Prediction

Prediction Function of the Accumulated Developmental Progress Method Using Mean Daily Temperatures