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News in latest version of ‘dendRoAnalyst’ package

Sugam Aryal

2024-03-07

New to dendRoAnalyst version 0.1.5!

• This version of package is based on the ‘tidyverse’.
• The functions are faster compared to previous version.
• The ‘phase.sc’ and ‘phase.zg’ only calculate the phases and phase statistics.
• There are two separate functions added to plot the output of ‘phase.sc’ and ‘phase.zg’.
• A new function, ‘dm.detrend’ has been added to detrend the dendrometer data using ‘gam’, ‘first difference’ and ‘gompertz’ function.
• A new function ‘dm.fit.gompertz’ is introduced to fit Gompertz function. It also provide option to calculate the growth rate applying first derivative of the Gompertz function.
• The function ‘spline.interpolation’ is now ‘dm.na.interpolation’, with two methods: ‘spline’ and ‘seasonal’ interpolation. The seasonal interpolation used ARIMA model to detect the daily pattern for three weeks (the week of gap occurrence + one week earlier and later) and interpolates the missing values.
• A new function ‘read.dendrometer’ is included to read the dendrometer data from TXT, CSV and EXCEL files.
• A new function ‘mean.detrended.dm’ calculates the averaged detrended dendrometer data with possibility getting first order autocorrelation free averaged series.
• A new function ‘mov.cor.dm’ is added for calculating climate-growth relationships.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.