plot_fixation: make a plot of fixations

In rwoldford/EyeFixR: Determinations fixation locations from eye-tracking data

Usage

plot_fixation(data, fixations, durationLimit = 0)

Arguments

data
fixations
durationLimit

Examples

##---- Should be DIRECTLY executable !! ----
##-- ==>  Define data, use random,
##--	or do  help(data=index)  for the standard data sets.

## The function is currently defined as
function (data, fixations, durationLimit = 0) 
{
    par(mar = c(0, 0, 0, 0))
    plot(data$GazePointX[!is.na(data$GazePointX)], 1 - data$GazePointY[!is.na(data$GazePointY)], 
        cex = 0.1, col = "red", xlim = c(0, 1), ylim = c(0, 1))
    lines(data$GazePointX[!is.na(data$GazePointX)], 1 - data$GazePointY[!is.na(data$GazePointY)], 
        col = "red")
    points(data$GazePointX[1], 1 - data$GazePointY[1], col = "green", 
        cex = 3, pch = 20)
    for (i in 1:nrow(fixations)) {
        if ((fixations$FixationIndex[i] >= 1) & (fixations$FixationDuration[i] > 
            durationLimit)) {
            pointSize <- 5 * fixations$FixationDuration[i]/max(fixations$FixationDuration)
            points(fixations$MappedFixationPointX[i], 1 - fixations$MappedFixationPointY[i], 
                col = "blue", cex = pointSize, pch = 1)
        }
    }
  }

rwoldford/EyeFixR documentation built on May 12, 2019, 4:37 a.m.