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pheno (version 1.5)

Auxiliary functions for phenological data analysis

Description

Provides some easy-to-use functions for time series analyses of (plant-) phenological data sets. These functions mainly deal with the estimation of combined phenological time series and are usually wrappers for functions that are already implemented in other R packages adapted to the special structure of phenological data and the needs of phenologists. Some date conversion functions to handle Julian dates are also provided.

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Version

Install

install.packages('pheno')

Monthly Downloads

351

Version

1.5

License

GPL (>= 2)

Maintainer

Joerg Schaber

Last Published

October 16th, 2009

Functions in pheno (1.5)

Example of a two-way classification table

Phenological observations

Daylength at julian day i on latitude l

Maximal day length on latitude l

Converts Julian date to integers day,month,year

Fits a two-way linear fixed model

Fits a two-way linear mixed model

Number of days between two dates

Converts numeric matrix to data frame

Dense design matrix for phenological data

Converts Julian date into string date

Kendall's normalized tau

getConnectedSets

Finds connected sets in a matrix or data frame

Sequential Mann-Kendall test for time series.

Converts a date (day,month,year) to Julian date

Converts a numeric data frame to matrix

maxConnectedSet

Maximal connected set in a matrix

Simple example of a two-way classification table

Fits a robust two-way linear model

Boolean test for leap year

Connected sets in a matrix

Converts string date to Julian date