read_tdf

read_tdf.character

read_tdf.trimcommand

Read data files intended for the original TRIM programme.

The TRIM model is widely used for estimating growth and decline of
animal populations based on (possibly sparsely available) count data. The
current package is a reimplementation of the original TRIM software developed
at Statistics Netherlands by Jeroen Pannekoek. See
<https://www.cbs.nl/en-gb/society/nature-and-environment/indices-and-trends%2d%2dtrim%2d%2d>
for more information about TRIM.

Adriaan Meyling

rtrim

Trends and Indices for Monitoring Data

Patrick Bogaart

Mark van der Loo

Jeroen Pannekoek

Statistics Netherlands 

read_tdf function

<dl><dt>x</dt>
<dd>a filename or a <code>trimcommand</code> object</dd>
<dt>...</dt>
<dd>(unused)</dd>
<dt>missing</dt>
<dd><code>[integer]</code> missing value indicator.
Missing values are translated to <code><a href="/link/NA?package=rtrim&version=2.3.1" data-mini-rdoc="rtrim::NA">NA</a></code>.</dd>
<dt>weight</dt>
<dd><code>[logical]</code> indicate presence of a weight column</dd>
<dt>ncovars</dt>
<dd><code>[logical]</code> The number of covariates in the file</dd>
<dt>labels</dt>
<dd><code>[character]</code> (optional) specify labels for the covariates.
Defaults to <code>cov&lt;i&gt;</code> (<code>i=1,2,...,ncovars</code>) if none are specified.</dd></dl>

Arguments

TRIM input data is stored in a <code>ASCII</code> encoded file where headerless columns
are separated by one or more spaces. Below are the columns as <code>read_tdf</code> expects
them.
<table class="table">
<tr><td>Variable</td><td>status</td><td>R type</td></tr>
<tr><td><code>site</code></td><td>requiered</td><td><code>integer</code></td></tr>
<tr><td><code>time</code></td><td>required</td><td><code>integer</code></td></tr>
<tr><td><code>count</code></td><td>required</td><td><code>numeric</code></td></tr>
<tr><td><code>weight</code></td><td>optional</td><td><code>numeric</code></td></tr>
<tr><td><code>&lt;covariate1&gt;</code></td><td>optional</td><td><code>integer</code></td></tr>
<tr><td><code>...</code></td><td></td><td></td></tr>
<tr><td><code>&lt;covariateN&gt;</code></td><td>optional</td><td><code>integer</code></td></tr>
</table>

The TRIM data file format

Read TRIM data files — read_tdf

<dl>

<dt>x</dt>
<dd>a filename or a <code>trimcommand</code> object</dd>


<dt>...</dt>
<dd>(unused)</dd>


<dt>missing</dt>
<dd><code>[integer]</code> missing value indicator.
Missing values are translated to <code><a href='https://rdrr.io/r/base/NA.html'>NA</a></code>.</dd>


<dt>weight</dt>
<dd><code>[logical]</code> indicate presence of a weight column</dd>


<dt>ncovars</dt>
<dd><code>[logical]</code> The number of covariates in the file</dd>


<dt>labels</dt>
<dd><code>[character]</code> (optional) specify labels for the covariates.
Defaults to <code>cov&lt;i&gt;</code> (<code>i=1,2,...,ncovars</code>) if none are specified.</dd>

</dl>

TRIM input data is stored in a <code>ASCII</code> encoded file where headerless columns
are separated by one or more spaces. Below are the columns as <code>read_tdf</code> expects
them.
<table class='table'>
<tr><td>Variable</td><td>status</td><td>R type</td></tr>
<tr><td><code>site</code></td><td>requiered</td><td><code>integer</code></td></tr>
<tr><td><code>time</code></td><td>required</td><td><code>integer</code></td></tr>
<tr><td><code>count</code></td><td>required</td><td><code>numeric</code></td></tr>
<tr><td><code>weight</code></td><td>optional</td><td><code>numeric</code></td></tr>
<tr><td><code>&lt;covariate1&gt;</code></td><td>optional</td><td><code>integer</code></td></tr>
<tr><td><code>...</code></td><td></td><td></td></tr>
<tr><td><code>&lt;covariateN&gt;</code></td><td>optional</td><td><code>integer</code></td></tr>
</table>

Variable	status	R type
`site`	requiered	`integer`
`time`	required	`integer`
`count`	required	`numeric`
`weight`	optional	`numeric`
`<covariate1>`	optional	`integer`
`...`
`<covariateN>`	optional	`integer`

read_tdf: Read TRIM data files

Description

Usage

Value

Arguments

The TRIM data file format

See Also