v_gri_core

See documentation of <code>v_gri</code> for most information, this function
is the workhorse behind, and should never be called directly by a user.

internal

Provides generic data structures and algorithms for use with forest
mensuration data in a consistent framework. The functions and objects
included are a collection of broadly applicable tools. More specialized
applications should be implemented in separate packages that build on this
foundation. Documentation about 'ForestElementsR' is provided by three
vignettes included in this package. For an introduction to the field of
forest mensuration, refer to the textbooks by Kershaw et al. (2017)
<doi:10.1002/9781118902028>, and van Laar and Akca (2007)
<doi:10.1007/978-1-4020-5991-9>.

Peter Biber

ForestElementsR

Data Structures and Functions for Working with Forest Data

Astor Toraño Caicoya

Torben Hilmers

v_gri_core function

<dl><dt>species_id</dt>
<dd>Vector of species ids (see <code>v_gri</code>), but for
this core function to work, <code>species_id</code> must be provided as
<code>character</code>. This will and should be not checked inside this function,
because if used as intended, that has happened before calling it.</dd>
<dt>dbh_cm</dt>
<dd>Vector of breast height diameters (see <code>v_gri</code>)</dd>
<dt>height_m</dt>
<dd>Vector of tree heights (see <code>v_gri</code>)</dd>
<dt>v_param</dt>
<dd>An internally provided object with appropriate species (group)
specific paramters</dd></dl>

Arguments

Core Function For the GRI Tree Volume Calculation — v_gri_core

<dl>

<dt>species_id</dt>
<dd>Vector of species ids (see <code>v_gri</code>), but for
this core function to work, <code>species_id</code> must be provided as
<code>character</code>. This will and should be not checked inside this function,
because if used as intended, that has happened before calling it.</dd>


<dt>dbh_cm</dt>
<dd>Vector of breast height diameters (see <code>v_gri</code>)</dd>


<dt>height_m</dt>
<dd>Vector of tree heights (see <code>v_gri</code>)</dd>


<dt>v_param</dt>
<dd>An internally provided object with appropriate species (group)
specific paramters</dd>

</dl>

v_gri_core: Core Function For the GRI Tree Volume Calculation

Description

Usage

Value

Arguments

Details