(This article was originally published at dahtah, and syndicated at StatsBlogs.)
Eyelink eye-trackers output an avalanche of disorganised crap. I’ve written an R package that will hopefully filter that crap for you. It’s called eyelinker and it’s on Github.
It outputs a set of dataframes containing raw traces, saccades, fixations and blinks, meaning it’s easy to produce plots like this one:
There’s a vignette explaining everything, just hit vignette(“basics”,package=”eyelinker”).
I’ve tested it on some of our local datasets but given the relatively free-form nature of Eyelink asc files, there’s no guarantee it will work everywhere.
Bug reports are welcome on the github issues page.
Please comment on the article here: dahtah
