Displaying 2 results from an estimated 2 matches for "eyetracking".
2004 Oct 28
1
changing coordinate systems
Hi, All. I am working with some eye-tracking data. I have a graph I
generate in R with arbitrary plotting commands which I want to
display. Then I want to plot the eyetracking data overlayed on it.
The eye-tracking data is in x-y coordinates on a 640x480 coordinate
system. Ideally, what I'd like to do is plot my R graph (e.g.,
plot(1:10)), and then change the complete coordinate system of the
whole device to be 640x480. commands like plot.window() don't work
b...
2009 Aug 03
1
selectively altering variable value
Hello,
I have run an eye-tracking experiment for which I now like to analyse the saccades. Participants looked from a fixation cross (ia = 5) to the target area (ia = 4) in following example of a data frame. ia = 9 stands for everything else. A saccade is indicated by saccade = 1. Sometimes the saccade just ends before the target area (see below). This is due to the parameters that determine a