[R] reshape from wide to long

Wed Feb 25 23:45:05 CET 2009

You didn't really provide enough detail on how you wanted the data
reshaped, but I'll take a guess:

> reshape(dat.1, direction='long',
varying=paste('X',c(0,3,6,12,25,50),sep=''), sep='')

      Grp time          X id
1.0     C    0  0.5326517  1
2.0     C    0  0.4715917  2
3.0     C    0  0.5021217  3
4.0     E    0  0.5845200  4
5.0     E    0  0.2985675  5
6.0     E    0  1.7854500  6
7.0     E    0  6.4370500  7
...

HTH,
Brian

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Veerappa Chetty
Sent: Wednesday, February 25, 2009 5:00 PM
To: r-help at r-project.org
Subject: [R] reshape from wide to long

Hi,I would like to reshape the following "wide" data set to "long" form.
I
would appreciate help with the correct code for "reshape". I tried a few
unsuccessfully.
Thanks.
Chetty
__________________________________________________
dat.1

  Grp        X0        X3               X6           X12          X25
    X501    C 0.5326517 0.6930942  0.9403883  1.157571  2.483117
2.809012
2    C 0.4715917 0.8613200  2.0706117  2.937632  7.530960  7.120678
3    C 0.5021217 0.7772071  1.5055000  2.047601  5.007038  4.964845
4    E 0.5845200 0.6439033  0.8221400  2.148100  1.862153 12.412500
5    E 0.2985675 0.6561142  1.0987058  2.842180  4.057899  2.319930
6    E 1.7854500 1.9813878  1.8340700  3.507966  1.120367  2.603823
7    E 6.4370500 2.2302000 18.5271000 17.139600 22.978400  7.116638
8    E 2.2763969 1.3779013  5.5705040  6.409461  7.504704  6.113223
9    T 0.9649327 0.9825045  1.0099582  1.713536  4.652827  3.877736
10   T 2.0774727 2.4916545  4.0087455  8.183382 26.381091 26.279636
11   T 2.2527000 2.6311091  3.1711727  4.316418  9.255364 28.771473
12   T 1.3989636 1.7640273  2.5264636  4.712164 23.606545 32.030000
13   T 1.4211167 1.5128417  1.7613583  2.351858  8.411725 55.448000
14   T 1.5992167 2.2668167  2.5927667  2.947150  6.025300 24.984767
15   T 2.9468333 3.3383667  3.1090667  3.244675  3.037425  2.679587
16   T 1.0867725 1.7652583  2.0307008  5.201625  8.279975 14.693583
17   T 1.7185010 2.0940723  2.5262791  4.083851 11.206282 23.595598

-- 
Professor of Family Medicine
Boston University
Tel: 617-414-6221, Fax:617-414-3345
emails: chettyvk at gmail.com,vchetty at bu.edu

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