Displaying 3 results from an estimated 3 matches for "jwg20".
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ag20
2009 Mar 30
3
Calculating First Occurance by a factor
I'm having difficulty finding a solution to my problem that without using a
for loop. For the amount of data I (will) have, the for loop will probably
be too slow. I tried searching around before posting and couldn't find
anything, hopefully it's not embarrassingly easy.
Consider the data.frame, Data, below
Data
Sub Tr IA FixInx FixTime
p1 t1 1 1 200
p1 t1 2
2009 May 05
1
re shape package - use one cast() instead of many
I have a data set that I'm trying to melt and cast in a specific way using
the reshape package. (I'll use the ff_d dataset from reshape so I don't have
to post a toy data set here. )
Lets say I'm looking for the interaction of treatment with each type of
"variable" in ff_d. Using the command below gets me this. Subject will get a
column and each treatment type by each
2009 Apr 01
0
回复： R-help Digest, Vol 73, Issue 32
...timization. (Paul Smith)
52. Re: Importing csv file with character values into sqlite3 and
subsequent problem in R / RSQLite (Gabor Grothendieck)
53. Re: Mature SOAP Interface for R (Tobias Verbeke)
54. circular analysis (Blanka Vlasakova)
55. Calculating First Occurance by a factor (jwg20)
56. Re: Calculating First Occurance by a factor (Dimitris Rizopoulos)
57. Re: Calculating First Occurance by a factor (Mike Lawrence)
58. Re: Calculating First Occurance by a factor (Jason Gullifer)
59. Re: Matrix max by row (Wacek Kusnierczyk)
60. Re: cmprsk- another survival-depedent p...