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Date frame
4 messages · Tammy Ma, jim holtman
It is called a "list".
On Wed, Mar 11, 2009 at 6:32 AM, Tammy Ma <metal_licaling at live.com> wrote:
Hi, All, How to make a data frame, each row of data frame store the different length of vector? Thanks. Tammy
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Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?
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It all depends on what you are going to do with the data. What you want to do can be accomplished with 'list', but probably not dataframes. So what is the problem you are trying to solve? Here is an example of how you can create a list with the information you want:
x <- read.table(textConnection(" starting_time Ending_time
+ session_1: 14:36:10 14:40:44 + session_2: 14:40:47 14:41:47 + session_3: 14:36:10 14:40:44 + session_4: 14:40:47 14:41:47 + session_5: 14:36:10 14:40:44 + session_6: 14:40:47 14:41:47"), header=TRUE)
closeAllConnections() x.l <- as.list(x) x.l$seq[1] <- list(c(4 ,3, 0 ,3 ,4 ,1, 0 ,1 ,4 ,3 ,4 ,3 ,4)) x.l$seq[2] <- list(c(3,4,1,2)) x.l$seq[3] <- NULL x.l$seq[4] <- list(matrix(0,4,4)) x.l
$starting_time
[1] 14:36:10 14:40:47 14:36:10 14:40:47 14:36:10 14:40:47
Levels: 14:36:10 14:40:47
$Ending_time
[1] 14:40:44 14:41:47 14:40:44 14:41:47 14:40:44 14:41:47
Levels: 14:40:44 14:41:47
$seq
$seq[[1]]
[1] 4 3 0 3 4 1 0 1 4 3 4 3 4
$seq[[2]]
[1] 3 4 1 2
$seq[[3]]
NULL
$seq[[4]]
[,1] [,2] [,3] [,4]
[1,] 0 0 0 0
[2,] 0 0 0 0
[3,] 0 0 0 0
[4,] 0 0 0 0
On Wed, Mar 11, 2009 at 8:49 AM, Tammy Ma <metal_licaling at live.com> wrote:
I have produced the data frame(1) as: ???????????????? starting_time??????? Ending_time session_1:? ?? 14:36:10 ? ? ? ? ?? 14:40:44 session_2:???? 14:40:47?????????? 14:41:47 ........ for each session, I produced? different sequences as: seq_1<-c(4 ,3, 0 ,3 ,4 ,1, 0 ,1 ,4 ,3 ,4 ,3 ,4) seq_2<-c(3,4,1,2) seq_3<-Null .... I want to put those to the 3rd column of data frame (1) corresponding the individual session. How could I do so? Originally, I want to create a data frame with each row contains different sequence and then put to 3rd column, which seems couldn't be done. thanks. Tammy
Date: Wed, 11 Mar 2009 07:50:37 -0400 Subject: Re: [R] Date frame From: jholtman at gmail.com To: metal_licaling at live.com CC: r-help at r-project.org It is called a "list". On Wed, Mar 11, 2009 at 6:32 AM, Tammy Ma <metal_licaling at live.com> wrote:
Hi, All, How to make a data frame, each row of data frame store the different length of vector? Thanks. Tammy
_________________________________________________________________ Show them the way! Add maps and directions to your party invites. http://www.microsoft.com/windows/windowslive/products/events.aspx ? ? ? ?[[alternative HTML version deleted]] ______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?
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Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?