R help - May 2011 - Fwd: transpose ?

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Then use as.matrix. Transpose is not a well-defined operation for data frames.
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Mohamed Lajnef <Mohamed.lajnef@inserm.fr> wrote:

Dear All, Sorry for the previous mail,suppose this data.frame D V7 V8 V9 V10 V11
V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 C C C C T T G G A A C C G G C C G G
T T A A A A T A T T C C G G C C C C T T G G A A C C G G C C I would translate D
as follow ( just for the first line) C C T G A C G C C C T G A C G C (V8 under
V7) (V9 under V10) ... Any help would be appreciated Regards M 	[[alternative
HTML version deleted]]_____________________________________________
R-help@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.


	[[alternative HTML version deleted]]

Hi:

Does this work?

dd <- read.table(textConnection("
C  C  C   C   T   T   G   G   A   A   C   C   G   G   C   C
G  G  T   T   A   A   A   A   T   A   T   T   C   C   G   G
C  C  C   C   T   T   G   G   A   A   C   C   G   G   C   C
"), stringsAsFactors = FALSE)

# Convert the data frame to a character matrix
# To do this, you need to make sure that the variables in
# your data frame are character rather than factor
dm <- as.matrix(dd)
dm        # elements should be quoted if character

# Create an empty list of nrow(dm) components
mm <- vector('list', nrow(dm))

# Create a two-row matrix from each row of dm
for(i in seq_len(nrow(dm))) mm[[i]] <- matrix(dm[i, ], nrow =
2)
> mm
[[1]]
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,] "C"  "C"  "T"  "G"  "A" 
"C"  "G"  "C"
[2,] "C"  "C"  "T"  "G"  "A" 
"C"  "G"  "C"

[[2]]
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,] "G"  "T"  "A"  "A"  "T" 
"T"  "C"  "G"
[2,] "G"  "T"  "A"  "A"  "A" 
"T"  "C"  "G"

[[3]]
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,] "C"  "C"  "T"  "G"  "A" 
"C"  "G"  "C"
[2,] "C"  "C"  "T"  "G"  "A" 
"C"  "G"  "C"

HTH,
Dennis

On Wed, May 25, 2011 at 7:19 AM, Mohamed Lajnef
<Mohamed.lajnef at inserm.fr> wrote:
> Dear All,
> Sorry for the previous mail,suppose this data.frame
> D
>
>
> V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22
> C ?C ?C ? C ? T ? T ? G ? G ? A ? A ? C ? C ? G ? G ? C ? C
> G ?G ?T ? T ? A ? A ? A ? A ? T ? A ? T ? T ? C ? C ? G ? G
> C ?C ?C ? C ? T ? T ? G ? G ? A ? A ? C ? C ? G ? G ? C ? C
>
>
>
>
>
> I would translate D as follow ( just for the first line)
>
> C C T G A C G C
> C C T G A C G C
> (V8 under V7) (V9 under V10) ...
>
> Any help would be appreciated
>
> Regards
> M
>
> ? ? ? ?[[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.
>