logistic

Colour vision models, colour spaces and colour thresholds. Provides flexibility to build user-defined colour vision models for n number of photoreceptor types. Includes Vorobyev & Osorio (1998) Receptor Noise Limited models <doi:10.1098/rspb.1998.0302>, Chittka (1992) colour hexagon <doi:10.1007/BF00199331>, and Endler & Mielke (2005) model <doi:10.1111/j.1095-8312.2005.00540.x>. Models have been extended to accept any number of photoreceptor types.

Felipe Gawrysewski

colourvision

Colour Vision Models

Felipe Malheiros Gawryszewski

logistic function

<dl> <dt>x</dt>
<dd>Range.</dd> <dt>x0</dt>
<dd>Midpoint value.</dd> <dt>L</dt>
<dd>Maximum value.</dd> <dt>k</dt>
<dd>Steepness of the curve</dd></dl>

Arguments

Felipe M. Gawryszewski <a href="/link/f.gawry%40gmail.com?package=colourvision&version=2.1.0" data-mini-rdoc="colourvision::f.gawry@gmail.com">f.gawry@gmail.com</a>

Author

Logistic curve — logistic

<dl>

 <dt>x</dt>
<dd>Range.</dd>

 <dt>x0</dt>
<dd>Midpoint value.</dd>

 <dt>L</dt>
<dd>Maximum value.</dd>

 <dt>k</dt>
<dd>Steepness of the curve</dd>

</dl>

Felipe M. Gawryszewski <a href='mailto:f.gawry@gmail.com'>f.gawry@gmail.com</a>

logistic: Logistic curve

Description

Usage

Arguments

Author

References

Examples