Figure 5.

Diagram showing the main functions in colourvision (v2.0) R package. Users provide input data that may be changed by data handling functions. Input data are arguments used by color vision model functions. There are functions to the most commonly used color vision models, and a general function able to generate user‐defined color vision models (GENmodel). These models have been extended to accept any number of photoreceptor types. Some functions are used internally (internal inset) in models but may be of interest for more advanced users. Model functions generate a comprehensive output, which may be visualized into model‐specific color spaces using plotting functions