[R] ordered matrix question

[Earl F. Glynn]

"Juan Pablo Fededa" <jpfededa at gmail.com> wrote in message 
news:7bff68f40702270946x65769440l47b6f8fcade0f0f7 at mail.gmail.com...
> Hi all,
>
> Is there an easy way to generate an object wich will be the same matrix, 
> but
> ordered by de cfp value?

Does this help?

> RawData <- "Block    X    Y    cfp    yfp    ID
+ 0    524    244    213.41795    7.18482109    1
+ 0    556    270    65.383904    9.568372661    2
+ 0    528    316    40.789474    5.573732175    3
+ 0    642    432    135.81734    12.40134427    4
+ 0    716    430    34.359135    3.944923077    5
+ 0    894    362    109.63158    3.197160316    6
+ 0    958    130    63.98452    3.396452004    7
+ 0    506    92    83.513931    9.105496856    8
+ 0    476    464    91.674919    9.178089414    9
+ 0    364    426    44.13932    2.068334364    10"
> d <- read.table(textConnection(RawData), header=TRUE)

> d.ordered <- data.matrix( d[order(d$cfp),] )

> d.ordered
   Block   X   Y       cfp       yfp ID
5      0 716 430  34.35914  3.944923  5
3      0 528 316  40.78947  5.573732  3
10     0 364 426  44.13932  2.068334 10
7      0 958 130  63.98452  3.396452  7
2      0 556 270  65.38390  9.568373  2
8      0 506  92  83.51393  9.105497  8
9      0 476 464  91.67492  9.178089  9
6      0 894 362 109.63158  3.197160  6
4      0 642 432 135.81734 12.401344  4
1      0 524 244 213.41795  7.184821  1


efg

Earl F. Glynn
Stowers Institute for Medical Research