Open jgeller112 opened 4 years ago
I suspect that one of your data sets uses NAs to code trackloss. In this case the code for blink detection might fail. Could you provide sample data?
For a description of the blink detection heuristic see: https://github.com/tmalsburg/saccades#blinks-and-artifacts
The data were collected with EyeLink so I believe all the trackloss is 1e+08. There are no x,y coordinates with NAs. The sample data can be extracted with the above code. I will show a few lines of the data. The first few rows should be labeled as a blink, but are not.
# A tibble: 6 x 11
trial time gxL gyL paL gxR gyR paR pup x y
<dbl> <int> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
1 1 2244092 1.00e8 1.00e8 0 1.00e8 1.00e8 0 0 1.00e8 1.00e8
2 1 2244094 1.00e8 1.00e8 0 1.00e8 1.00e8 0 0 1.00e8 1.00e8
3 1 2244096 1.00e8 1.00e8 0 1.00e8 1.00e8 0 0 1.00e8 1.00e8
4 1 2244098 1.00e8 1.00e8 0 1.00e8 1.00e8 0 0 1.00e8 1.00e8
5 1 2244100 1.00e8 1.00e8 0 NA NA NA 0 1.00e8 1.00e8
6 1 2244102 1.00e8 1.00e8 0 1.00e8 1.00e8 0 0 1.00e8 1.00e8
Label here refers to the start and end of a blink.
# A tibble: 704,918 x 6
trial time x y pup Label
<dbl> <int> <dbl> <dbl> <dbl> <chr>
1 1 2244092 100000000 100000000 0 NA
2 1 2244094 100000000 100000000 0 NA
3 1 2244096 100000000 100000000 0 NA
4 1 2244098 100000000 100000000 0 NA
5 1 2244100 100000000 100000000 0 NA
6 1 2244102 100000000 100000000 0 NA
7 1 2244104 100000000 100000000 0 NA
8 1 2244106 100000000 100000000 0 NA
9 1 2244108 100000000 100000000 0 NA
10 1 2244110 100000000 100000000 0 NA
If you provide me with a reproducible example, I could look into this and hopefully find out what happening.
Hi!
It is my understanding that tracklossed data are usually labeled as blinks? The blink detect function is not working with some of the data I am processing. Interestingly, it works with data from Experiment Builder, but not when I process data from Psychtoolbox. I compared the below data to the sample report from SR and there are some large discrepancies in blink detection.