public List <double> speedPerFixation()
{
//Clone the gaze for applying fixation detection on it
GazeData gdFixation = (GazeData)gd.Clone();
GazeData.fixationBusher2008(gdFixation.gazes);
List <double> speed = new List <double>();
for (int i = 1; i < gdFixation.gazes.Count; i++)
{
double distX = gdFixation.gazes[i].gazeX - gdFixation.gazes[i - 1].gazeX;
//Don't compute speed for backward
if (distX < 0)
{
continue;
}
double estimatedWords = distX / averageWidthWordSpace;
double elapsedtime = gdFixation.gazes[i].timestamp - gdFixation.gazes[i - 1].timestamp;
speed.Add(60000 * estimatedWords / elapsedtime);
}
return(speed);
}
