Hello,
Sorry, I've just realized that your data frame is named 'XXX', not
'dat'. Change that and the rest should work:
idx <- cumsum(c(TRUE, diff(XXX$electrode == "electrode1") > 0))
split(XXX, idx)
Rui Barradas
Em 22-07-2013 16:47, Rui Barradas escreveu:
Hello,
Try the following.
idx <- cumsum(c(TRUE, diff(dat$electrode == "electrode1") > 0))
split(dat, idx)
Hope this helps,
Rui Barradas
Em 22-07-2013 15:09, dennis1...@gmx.net escreveu:
Hi,
I have a small problem with the function split() and would appreciate
your help.
I have a table called “XXX” with 2 columns and 49 rows. The 49 rows
belong to 8 different levels (electrode1, ...,electrode8). I want to
split the table always at the row where “electrode1” starts again so
that I can export 7 individual dataframes (numbered “dataframe1” to
”dataframe7”) which contain always electrode1 as first level (always
three rows) with the varying number of rows for electrodes2-8 below.
I tried the split function with various setups:
t <- as.factor(XXX$electrode)
dataframeX <- split(XXX, f=(levels=t))
But this doesn’t work. Could you please help. Thank you! Dennis
This is the table "XXX"
electrode length
electrode1 5.7
electrode1 6.3
electrode1 6.2
electrode2 11.4
electrode2 9.7
electrode1 5.7
electrode1 6.3
electrode1 6.2
electrode3 14.2
electrode3 14.8
electrode3 12.6
electrode1 5.7
electrode1 6.3
electrode1 6.2
electrode4 17.0
electrode4 16.3
electrode4 17.8
electrode4 18.3
electrode4 16.9
electrode4 18.5
electrode1 ....
.... ....
electrode5 ....
.... ....
electrode1 ....
electrode6 ....
electrode1 ....
electrode7 ....
electrode1 ....
electrode8 ....
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______________________________________________
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and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
