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chillR

Description

chillR aims to provide…

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CRAN Version

Installation

Install the released version of chillR from CRAN with install.packages("chillR").

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Version

Install

install.packages('chillR')

Monthly Downloads

1,649

Version

0.77

License

GPL-3

Maintainer

Eike Luedeling

Last Published

December 11th, 2025

Functions in chillR (0.77)

PhenoFlex_fixedDynModelwrapper

PhenoFlex_fixedDynModelwrapper
UniForce_Wrapper

UniForce_Wrapper
PhenoFlex_fixedDynModelGAUSSwrapper

PhenoFlex_fixedDynModelGAUSSwrapper
PhenoFlex_GDHwrapper

PhenoFlex_GDHwrapper
UniChill_Wrapper

UniChill_Wrapper
StepChill_Wrapper

StepChill_Wrapper
add_date

Add date/time column to data.frame
UnifiedModel_Wrapper

UnifiedModel_Wrapper
bloom_prediction

Bloom prediction from chilling and forcing requirements, assumed to be fulfilled strictly in sequence
bloom_prediction2

Bloom prediction from chilling and forcing requirements, assumed to be fulfilled strictly in sequence - version 2
bloom_prediction3

Bloom prediction from chilling and forcing requirements, assumed to be fulfilled strictly in sequence - version 3
YEARMODA2Date

YEARMODA to Date conversion
KA_weather

Weather data for Klein-Altendorf, Germany
Winters_hours_gaps

Hourly temperature data sample
convert_scen_information

Converts list of change scenarios to data.frame or vice versa
check_temperature_scenario

Check temperature scenario for consistency
california_stations

Weather stations in California
VIP

Calculate VIP scores for PLS regression
RMSEP

Root Mean Square Error of Prediction (RMSEP)
color_bar_maker

Make color scheme for bar plots in outputs of the chillR package
Utah_Model

Calculation of cumulative chill according to the Utah Model
bootstrap.phenologyFit

bootstrap.phenologyFit
c.bootstrap_phenologyFit

Concatenate bootstrap_phenologyfit objects
chile_agromet2chillR

Convert a weather file downloaded from the Chilean Agromet website to chillR format
chillR-package

chillR logo chillR: statistical methods for phenology analysis in temperate fruit trees
check_temperature_record

Check a daily or hourly temperature record for compliance with chillR's standards
genSeason

Generate Seasons
RPD

Residual Prediction Deviation (RPD)
chilling_hourtable

Add chilling and heat accumulation to table of hourly temperatures
RPIQ

Ratio of Performance to InterQuartile distance (RPIQ)
chilling

Calculation of chilling and heat from hourly temperature records
extract_cmip6_data

Unpacks and formats downloaded CMIP6 data
download_baseline_cmip6_ecmwfr

Download historical CMIP6 Data via the ecwfr package
download_cmip6_ecmwfr

Download CMIP6 Data via the ecwfr package
fix_weather

Weather data fixer and quality checker
extract_differences_between_characters

Identify shared leading or trailing character strings
chifull

chifull
extract_temperatures_from_grids

Extract temperature information from gridded dataset
filter_temperatures

Quality filter for temperature records
daily_chill

Calculation of daily chill and heat accumulation
gen_rel_change_scenario

Generates relative climate change scenarios based on extracted CMIP6 data
genSeasonList

genSeasonList
daylength

Compute sunrise and sunset times, and daylength
handle_gsod

List, download or convert to chillR format data from the Global Summary of the Day database
handle_dwd_old

List, download or convert to chillR format data from the Deutscher Wetterdienst database
getClimateWizardData

Extract climate data from the ClimateWizard database
getClimateWizard_scenarios

Extract mutltiple scenarios from the ClimateWizard database
identify_common_string

Identify shared leading or trailing character strings
interpolate_gaps

Linear gap interpolation
make_JDay

Make Julian Day in dataframe
make_all_day_table

Fill in missing days in incomplete time series
handle_cimis

List, download or convert to chillR format data from the CIMIS database
handle_ucipm

List, download or convert to chillR format data from the UCIPM database
get_last_date

Get the last date from a phenology record
handle_gsod_old

Deprecated version of handle_gsod. List, download or convert to chillR format data from the Global Summary of the Day database
get_weather

Download weather data from online database
load_ClimateWizard_scenarios

Load climate wizard scenarios
handle_dwd

List, download or convert to chillR format data from the Deutscher Wetterdienst database
make_daily_chill_plot2

Plot daily climate metric accumulation throughout the year (2)
interpolate_gaps_hourly

Interpolate gaps in hourly temperature records
leap_year

Leap year finder
make_climate_scenario

Make climate scenario
load_temperature_scenarios

Load temperature scenarios
make_daily_chill_plot

Plot daily climate metric accumulation throughout the year
make_climate_scenario_from_files

Make climate scenario from multiple saved csv files
make_multi_pheno_trend_plot

Combine multiple phenology contour plots in one figure
make_pheno_trend_plot

Make image showing phenology response to temperatures during two phases
make_daily_chill_figures

Produce image of daily chill and heat accumulation
make_hourly_temps

Make hourly temperature record from daily data
ordered_climate_list

Sort files in a folder, so that numbers are in ascending sequence
phenologyFitter

phenologyFitter
plot.bootstrap_phenologyFit

plot bootstrap_phenologyFit
plot_climate_scenarios

Plot multiple chilling scenario groups (or for other metrics)
plot_climateWizard_scenarios

Plot mutltiple ClimateWizard scenarios obtained with getClimateWizard_scenarios
make_chill_plot

Plot climate metrics over time
make_california_UCIPM_station_list

Makes a list of the UC IPM weather stations
phenologyFit

phenologyFit
plot.phenologyFit

plot phenologyFit
patch_daily_temperatures

Patch gaps in daily weather records
patch_daily_temps

Patch gaps in daily weather records - updated
plot_PLS

Output of Partial Least Squares analysis results of phenology vs. daily mean temperatures
print.phenologyFit

print phenologyFit
predict.bootstrap_phenologyFit

predict bootstrap_phenologyFit
read_tab

Read csv table regardless of whether it is a true csv or the French type
runn_mean

Running mean of a vector
plot_scenarios

Plot historic and future scenarios for climate-related metrics (ggplot2 version)
plot_phenology_trends

Visualizing phenology responses to temperatures during two phases
runn_mean_pred

Prediction based on a running mean
save_temperature_scenarios

Save temperature scenarios generated with temperature_generation
temperature_generation

Generation of synthetic temperature records
summary.phenologyFit

summary phenologyFit
temperature_scenario_baseline_adjustment

Make temperature scenario relative to a particular baseline
select_by_file_extension

Select string that end in a particular way (e.g. a certain file extension)
tempResponse_hourtable

Add metric accumulation to table of hourly temperatures
tempResponse

Calculation of climatic metrics from hourly temperature records
tempResponse_daily_list

Calculation of climatic metrics from lists of daily temperature records
predict.phenologyFit

predict phenologyFit
test_if_equal

Test if all character vectors in a string are equal
stack_hourly_temps

Stacking of hourly temperatures
temperature_scenario_from_records

Make monthly temperature scenario from historic records
stage_transitions

Compute what it takes to advance through development stages
weather2chillR

Convert downloaded weather to chillR format
summary.bootstrap_phenologyFit

summary.bootstrap_phenologyFit
step_model

Calculation of cumulative temperature metric according to a user-defined stepwise weight function
GDH

Calculation of cumulative heat according to the Growing Degree Hours Model
ChuineFstar

ChuineFstar
ChuineCF

ChuineCF
Date2YEARMODA

Date to YEARMODA conversion
PhenoFlex

PhenoFlex
KA_bloom

Cherry bloom data for Klein-Altendorf, Germany
GDD

Calculation of cumulative heat according to the Growing Degree Day Model
GDH_model

Calculation of cumulative heat according to the Growing Degree Hours Model (alternative function name)
JDay_earlier

Check whether a Julian date is before or after another one
PLS_chill_force

Partial Least Squares analysis of phenology vs. accumulated daily chill and heat
JDay_count

Count days between two Julian dates
Empirical_daily_temperature_curve

Empirical daily temperature curve
Empirical_hourly_temperatures

Empirical daily temperature prediction
PhenoFlex_GAUSSwrapper

PhenoFlex_GAUSSwrapper
Chilling_Hours

Calculation of cumulative chill according to the Chilling Hours Model
Dynamic_Model

Dynamic_Model
JDay_later

Check whether a Julian date is after another one
DynModel_driver

DynModel_driver
PLS_pheno

Partial Least Squares analysis of phenology vs. daily mean temperatures