Hi,
I used
#------------------
# Análise do PESO -
#------------------
pesom1 = cbind(PESO[MÊS==1])
pesom3 = cbind(PESO[MÊS==3])
#--------- Grupo Placebo ---------
pesom1p = pesom1[GRUPO=='P']
pesom3p = pesom3[GRUPO=='P']
t.test(pesom1p, pesom3p, paired=T)
#--------- Grupo Cogumelo ---------
pesom1c = pesom1[GRUPO=='C']
pesom3c = pesom3[GRUPO=='C']
t.test(pesom1c, pesom3c, paired=T)
to compare PESO between MÊS (Months) inside GRUPO
(t-paired). CICLO was fixed.
But, I have two CICLOS, and I would like compare PESO
between MÊS==3 (CICLO 3) and MÊS==6 (CICLO 6) inside GRUPO
(1 and 2).
My file has (part of data):
Ciclo Mês Grupo Peso
3 0 1 62.2
3 0 1 67.0
3 0 1 71.5
3 0 2 70.0
3 0 2 71.0
3 0 2 69.5
3 1 1 60.0
3 1 1 51.2
3 1 1 70.0
3 1 2 59.0
3 1 2 56.5
3 1 2 70.0
3 2 1 68.0
3 2 1 69.0
3 2 1 66.0
3 2 2 56.0
3 2 2 53.0
3 2 2 96.0
3 3 1 67.0
3 3 1 70.0
3 3 1 67.0
3 3 2 71.5
3 3 2 70.0
3 3 2 71.0
6 0 1 66.2
6 0 1 65.0
6 0 1 73.5
6 0 2 78.0
6 0 2 71.0
6 0 2 62.5
6 1 1 63.0
6 1 1 51.2
6 1 1 72.0
6 1 2 59.0
6 1 2 57.5
6 1 2 79.0
6 2 1 78.0
6 2 1 66.0
6 2 1 63.0
6 2 2 52.0
6 2 2 54.0
6 2 2 93.0
6 3 1 62.0
6 3 1 71.0
6 3 1 63.0
6 3 2 78.5
6 3 2 75.0
6 3 2 74.0
6 4 1 63.2
6 4 1 62.0
6 4 1 73.5
6 4 2 73.0
6 4 2 72.0
6 4 2 65.5
6 5 1 67.0
6 5 1 57.2
6 5 1 70.0
6 5 2 59.0
6 5 2 56.5
6 5 2 71.0
6 6 1 61.0
6 6 1 61.0
6 6 1 61.0
6 6 2 52.0
6 6 2 53.0
6 6 2 96.0
--------------------------------------
Silvano Cesar da Costa
Departamento de Estatística
Universidade Estadual de Londrina
Fone: 3371-4346
--------------------------------------
----- Original Message -----
From: "Ivan Calandra" <ivan.calan...@uni-hamburg.de>
To: <r-help@r-project.org>
Sent: Monday, May 10, 2010 11:26 AM
Subject: Re: [R] Extracting a subset
Hi,
My first suggestion would be to supply a sample data (maybe
using the
function dput) showing what you have, what you want to do,
and what
you've tried (you say that subset() didn't work but we don't
know how
you've typed it).
Then, we'll see!
Ivan
Le 5/10/2010 14:35, Silvano a écrit :
Hi,
I have a dataset with many variables and observations.
The variable Group has two levels: C and P,
the Month variable has four levels: 0, 1, 2 and 3.
I want to extract a subset of the variable Weight,
considering only 1 and 3 levels for Months of the Group
variable.
I tried the command subset but it did not work. Any
suggestions?
Thanks,
--------------------------------------
Silvano Cesar da Costa
Departamento de Estatística
Universidade Estadual de Londrina
Fone: 3371-4346
______________________________________________
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PLEASE do read the posting guide
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--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calan...@uni-hamburg.de
**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
______________________________________________
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.
______________________________________________
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.
