Hi,
I want to apply crp for a data set which is derived from a eye tracking experiment.
I m not aware of the selection of delay, the neighborhood distance for the recurrence.
Also, my data series format is like the following:
time xPosition yPosition
0 3,76 1,53
0,01 3,39 1,99
0,04 3,71 1,81
0,05 3,56 1,39
0,07 3,52 1,26
0,09 3,34 1,89
0,11 3,22 1,04
0,13 3,28 1,26
0,15 5,27 2,07
0,17 7,94 1,22
my interest would be learn the recurrence of the data for each user and between different users. it is a experiment with 12 users each having 300+ trails in each block. Each user has 4 blocks.
aswin
Beginner: application of the rqa in psychology
- Norbert
- Expert
- Posts: 198
- Joined: Wed Jan 4, 2006 11:03
- Affiliation (Univ., Inst., Dept.): Potsdam Institute for Climate Impact Research, Germany
- Location: Potsdam, Germany
- Location: Potsdam Institute for Climate Impact Research, Germany
Re: Beginner: application of the rqa in psychology
you can use the function crp2 in the CRP toolbox. this allows you to consider the x- and y-component as the dimensions of the phase space trajectory directly. if your data vector x is as you wrote with 1st column as time, 2nd column the x-component, and 3rd column the y-component, then you can do
for RQA analysis you can call the function crqa in the same manner.
Code: Select all
crp2(x(:,2:3))
-
- Junior
- Posts: 2
- Joined: Tue May 27, 2014 11:17
- Affiliation (Univ., Inst., Dept.): TU Dortmund
- Location: Dortmund, Germany
- Research field: Psychology
- Location: Germany
Re: Beginner: application of the rqa in psychology
Greetings,
I tried and it was working great!
Now i want to apply the CRP toolbox to study the recurrence between two trails.
my data is looking something like this
time (index1)
515,322000000000
517,674000000000
517,694000000000
517,714000000000
517,734000000000
517,754000000000
517,776000000000
517,794000000000
xComp(index2)
-14,4344460000000
-2,02071250000000
-1,54566600000000
-1,29854700000000
-1,29778800000000
-1,23021650000000
-1,37307200000000
-1,69991700000000
yComp(index3)
-3,79159250000000
-6,21937950000000
-3,26960600000000
-4,37356950000000
-3,01294150000000
-2,38234000000000
-3,22597000000000
-4,02163950000000
I tried and it was working great!
Now i want to apply the CRP toolbox to study the recurrence between two trails.
The error is "Data must have same length".
Code: Select all
crqa(eyeTrialLow(:,2:3),eyeTrialHigh(:,2:3))
time (index1)
515,322000000000
517,674000000000
517,694000000000
517,714000000000
517,734000000000
517,754000000000
517,776000000000
517,794000000000
xComp(index2)
-14,4344460000000
-2,02071250000000
-1,54566600000000
-1,29854700000000
-1,29778800000000
-1,23021650000000
-1,37307200000000
-1,69991700000000
yComp(index3)
-3,79159250000000
-6,21937950000000
-3,26960600000000
-4,37356950000000
-3,01294150000000
-2,38234000000000
-3,22597000000000
-4,02163950000000
- Norbert
- Expert
- Posts: 198
- Joined: Wed Jan 4, 2006 11:03
- Affiliation (Univ., Inst., Dept.): Potsdam Institute for Climate Impact Research, Germany
- Location: Potsdam, Germany
- Location: Potsdam Institute for Climate Impact Research, Germany
Re: Beginner: application of the rqa in psychology
Probably your two data sets have different length. Both for the crqa, both data sets should have equal length.