validate_positive

Specialized validator for positive numeric values.

An implementation of the 'Fish Bioenergetics 4.0' framework
described in Deslauriers et al. (2017)
<doi:10.1080/03632415.2017.1377558>. Provides automated parameter
optimization, multi-prey diet modeling, and comprehensive energy budget
simulations for fisheries research and aquaculture applications. An
optional 'TMB' (Template Model Builder) backend delivers 10-50x speedup
in maximum likelihood estimation while maintaining full backward
compatibility. Includes species-specific parameter databases and tools
for modeling fish growth, consumption, and metabolism under varying
environmental conditions.

Hans Ttito

fb4package

'Fish Bioenergetics 4.0' Model Implementation with
High-Performance 'TMB' Backend

validate_positive function

<dl><dt>value</dt>
<dd>Value(s) to validate</dd>
<dt>param_name</dt>
<dd>Parameter name</dd>
<dt>strategy</dt>
<dd>Handling strategy</dd>
<dt>min_val</dt>
<dd>Minimum positive value (default 0.001)</dd></dl>

Arguments

Validate positive values — validate_positive

<dl>

<dt>value</dt>
<dd>Value(s) to validate</dd>


<dt>param_name</dt>
<dd>Parameter name</dd>


<dt>strategy</dt>
<dd>Handling strategy</dd>


<dt>min_val</dt>
<dd>Minimum positive value (default 0.001)</dd>

</dl>

validate_positive: Validate positive values

Description

Usage

Value

Arguments

Examples