spp_levels

is_spp_in_levels

is_spp_in_data

spp_level

rm_spp_level

add_spp_level

These helper functions just check to see if a species column exists in the
data (designated as 'spp' or 'species'). If one of those columns exists,
but the column name is not in the levels argument it will get added to
levels.

Provides methods for implementing hierarchical age length keys
to estimate fish ages from lengths using data borrowing. Users can create
hierarchical age length keys and use them to assign ages given length.

Paul Frater

halk

Methods to Create Hierarchical Age Length Keys for Age
Assignment

spp_levels function

<dl><dt>levels</dt>
<dd>The levels argument passed from <code>make_halk</code></dd>
<dt>data</dt>
<dd>A data.frame with length-at-age data</dd></dl>

Arguments

Check for species in columns and/or levels and add to levels if present — spp_levels

<dl>

<dt>levels</dt>
<dd>The levels argument passed from <code>make_halk</code></dd>


<dt>data</dt>
<dd>A data.frame with length-at-age data</dd>

</dl>

spp_levels: Check for species in columns and/or levels and add to levels if present

Description

Usage

Value

Arguments