Psychtoolbox-3

Psychophysics Toolbox Version 3 (PTB-3) is an open-source set of Matlab and GNU Octave functions for vision and neuroscience research. It makes it easy to synthesize and show accurately controlled visual and auditory stimuli and interact with the observer. Some of its functionality is available as part of Python toolkits like PsychoPy. For licenses, commercial support and services visit psychtoolbox.net. Follow us on Mastodon, BlueSky, or Twitter @psychtoolbox

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srLens

>Psychtoolbox>PsychColorimetricData>StockmanRiderNomogram>srFunctions

y = srLens(nm)

Return Stockman-Rider lens density Fourier fit

Adopted by Claude AI and DHB from Stockman-Rider paper and Python code.

See also StockmanRiderDemo, srLMSconelog.

Path   Retrieve current version from GitHub | View changelog
Psychtoolbox/PsychColorimetricData/StockmanRiderNomogram/srFunctions/srLens.m

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Last updated on August 13, 2026