option_or_default

Extract value for a named list or use default if key is missing

A modular and extendable approach to extract (micro)saccades from gaze samples via an ensemble of methods.
Although there is an agreement about a general definition of a saccade, the more specific details are harder to agree upon.
Therefore, there are numerous algorithms that extract saccades based on various heuristics, which differ in the assumptions about velocity,
acceleration, etc. The package uses three methods (Engbert and Kliegl (2003) <doi:10.1016/S0042-6989(03)00084-1>,
Otero-Millan et al. (2014)<doi:10.1167/14.2.18>, and Nyström and Holmqvist (2010) <doi:10.3758/BRM.42.1.188>)
to label individual samples and then applies a majority vote approach to identify saccades. The package includes three
methods but can be extended via custom functions. It also uses a modular approach to compute velocity and
acceleration from noisy samples. Finally, you can obtain methods votes per gaze sample instead of saccades.

Alexander (Sasha) Pastukhov

saccadr

Extract Saccades via an Ensemble of Methods Approach

Alexander Pastukhov

option_or_default function

<dl><dt>options</dt>
<dd>Named list</dd>
<dt>key</dt>
<dd>String key</dd>
<dt>default</dt>
<dd>Default value to be returned, if key is missing.</dd></dl>

Arguments

Extract value for a named list or use default if key is missing — option_or_default

<dl>

<dt>options</dt>
<dd>Named list</dd>


<dt>key</dt>
<dd>String key</dd>


<dt>default</dt>
<dd>Default value to be returned, if key is missing.</dd>

</dl>

option_or_default: Extract value for a named list or use default if key is missing

Description

Usage

Value

Arguments

Examples