h_standard_gnfi3_core

See documentation of <code>h_standard_gnfi3</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

h_standard_gnfi3_core function

<dl><dt>species_id</dt>
<dd>Vector of species ids (see <code>h_standard_gnfi3</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. The
codings must either follow the ger_nfi_2012, the tum_wwk_short, or the
bavrn_state_short coding.</dd>
<dt>dbh_cm</dt>
<dd>Vector of breast height diameters (see
<code>h_standard_gnfi3</code>)</dd>
<dt>d_q_cm</dt>
<dd>The species quadratic mean diameter (cm) in the stand of
interest. (see <code>h_standard_gnfi3</code>)</dd>
<dt>h_q_m</dt>
<dd>The species mean height (m), corresponding to the quadratic mean
diameter in the stand of interest. (see <code>h_standard_gnfi3</code>)</dd>
<dt>params</dt>
<dd>A data frame that defines the function parameters corresponding
to the species coding represented by <code>species_id</code></dd></dl>

Arguments

Core Function for the Estimation of Tree Heights Using the Standard Height
Curve System of the 3rd German National Forest Inventory — h_standard_gnfi3_core

<dl>

<dt>species_id</dt>
<dd>Vector of species ids (see <code>h_standard_gnfi3</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. The
codings must either follow the ger_nfi_2012, the tum_wwk_short, or the
bavrn_state_short coding.</dd>


<dt>dbh_cm</dt>
<dd>Vector of breast height diameters (see
<code>h_standard_gnfi3</code>)</dd>


<dt>d_q_cm</dt>
<dd>The species quadratic mean diameter (cm) in the stand of
interest. (see <code>h_standard_gnfi3</code>)</dd>


<dt>h_q_m</dt>
<dd>The species mean height (m), corresponding to the quadratic mean
diameter in the stand of interest. (see <code>h_standard_gnfi3</code>)</dd>


<dt>params</dt>
<dd>A data frame that defines the function parameters corresponding
to the species coding represented by <code>species_id</code></dd>

</dl>

h_standard_gnfi3_core: Core Function for the Estimation of Tree Heights Using the Standard Height Curve System of the 3rd German National Forest Inventory

Description

Usage

Value

Arguments

Details