dendro.resample

This function is designed to change the temporal resolution of data. Depending on the objective, the user can define either maximum, minimum, or mean values to resample data in hourly, daily, weekly or monthly frequency.

There are various functions for managing and cleaning data before the application of different approaches. This includes identifying and erasing sudden jumps in dendrometer data not related to environmental change, identifying the time gaps of recordings, and changing the temporal resolution of data to different frequencies. Furthermore, the package calculates daily statistics of dendrometer data, including the daily amplitude of tree growth. Various approaches can be applied to separate radial growth from daily cyclic shrinkage and expansion due to uptake and loss of stem water. In addition, it identifies periods of consecutive days with user-defined climatic conditions in daily meteorological data, then check what trees are doing during that period.

Sugam Aryal

dendRoAnalyst

A Tool for Processing and Analyzing Dendrometer Data

Martin Häusser

Jussi Grießinger

Ze-Xin Fan

Achim Bräuning

dendro.resample function

<dl><dt>df</dt>
<dd>dataframe with first column containing date and time in the format <code>yyyy-mm-dd HH:MM:SS</code>.</dd>
<dt>by</dt>
<dd>either H, D, W or M to resample data into hourly, daily, weekly or monthly resolution.</dd>
<dt>value</dt>
<dd>either max, min, mean or sum for the resampling value.</dd></dl>

Arguments

Resampling temporal resolution of dendrometer  and climate data — dendro.resample

<dl>

<dt>df</dt>
<dd>dataframe with first column containing date and time in the format <code>yyyy-mm-dd HH:MM:SS</code>.</dd>


<dt>by</dt>
<dd>either H, D, W or M to resample data into hourly, daily, weekly or monthly resolution.</dd>


<dt>value</dt>
<dd>either max, min, mean or sum for the resampling value.</dd>

</dl>

dendro.resample: Resampling temporal resolution of dendrometer and climate data

Description

Usage

Value

Arguments

Examples