var_periods

Computes aggregates (sums or mean) over defined temporal periods and identifies min/max periods.

internal

Provides a high-performance framework for deriving bioclimatic and custom summary variables from
large-scale climate raster data. The package features a dual-backend architecture that intelligently switches
between fast in-memory processing for smaller datasets (via the 'terra' package) and a memory-safe tiled approach
for massive datasets that do not fit in RAM (via 'exactextractr' and 'Rfast'). The main functions,
derive_bioclim() and derive_statistics(), offer a unified interface with advanced options for
custom time periods and static indices, making it suitable for a wide range of ecological and
environmental modeling applications. A software note is in preparation. In the meantime, you can visit
the package website <https://gepinillab.github.io/fastbioclim/> to find tutorials in English and Spanish.

Gonzalo E. Pinilla-Buitrago

fastbioclim

Scalable and Efficient Derivation of Bioclimatic Variables

Luis Osorio-Olvera

var_periods function

<dl><dt>variable</dt>
<dd>Matrix of temporal values (rows=pixels/cells, cols=units).</dd>
<dt>periodos</dt>
<dd>List of unit groupings (output from compute_periods).</dd>
<dt>n_units</dt>
<dd>Integer. Total number of temporal units.</dd>
<dt>period_length</dt>
<dd>Integer. Length of each period.</dd>
<dt>stat</dt>
<dd>Character. Either `"mean"` or `"sum"`, specifying whether to calculate the average or total</dd></dl>

Arguments

Calculate Temporal Period Aggregates — var_periods

<dl>

<dt>variable</dt>
<dd>Matrix of temporal values (rows=pixels/cells, cols=units).</dd>


<dt>periodos</dt>
<dd>List of unit groupings (output from compute_periods).</dd>


<dt>n_units</dt>
<dd>Integer. Total number of temporal units.</dd>


<dt>period_length</dt>
<dd>Integer. Length of each period.</dd>


<dt>stat</dt>
<dd>Character. Either `"mean"` or `"sum"`, specifying whether to calculate the average or total</dd>

</dl>

var_periods: Calculate Temporal Period Aggregates

Description

Usage

Value

Arguments