Displaying 2 results from an estimated 2 matches for "firstfixtim".
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firstfixtime
2009 Mar 30
3
Calculating First Occurance by a factor
...0
p1 t1 5 9 1500
What I'm trying to do is for each unique IA get the first occurring FixTime.
This will eventually need to be done by each Trial (Tr) and each Subject
Number (Sub). FixInx is essentially the number of rows in a trial. The
resulting data.frame is below.
Sub Tr IA FirstFixTime
p1 t1 1 200
p1 t1 2 350
p1 t1 3 600
p1 t1 4 850
p1 t1 5 1350
Here is the solution I have now.
agg = aggregate(data$FixInx, list(data$Sub, data$Tr, data$IA), min) #get the
minimum fix index by Sub, Tr, and IA... I can use this min fix index to pull
out the desired fixti...
2009 Apr 01
0
回复： R-help Digest, Vol 73, Issue 32
...0
p1 t1 5 9 1500
What I'm trying to do is for each unique IA get the first occurring FixTime.
This will eventually need to be done by each Trial (Tr) and each Subject
Number (Sub). FixInx is essentially the number of rows in a trial. The
resulting data.frame is below.
Sub Tr IA FirstFixTime
p1 t1 1 200
p1 t1 2 350
p1 t1 3 600
p1 t1 4 850
p1 t1 5 1350
Here is the solution I have now.
agg = aggregate(data$FixInx, list(data$Sub, data$Tr, data$IA), min) #get the
minimum fix index by Sub, Tr, and IA... I can use this min fix index to pull
out the desired fixti...