Displaying 20 results from an estimated 2000 matches similar to: "Interaction"
2012 Sep 26
3
Reading multiple files
Hi,
I have 35 data files for reading. I would like get a program for
performing reading of 35 files at once.
All are of the type: Dados1.raw, Dados2.raw and so on.
If the files have the same number of columns, I can read with the
following commands:
rm(list=ls())
filenames = list.files(path="~/Silvano/Arq", pattern="Dados+.*raw")
names = substr(filenames, 1, 7)
for(i in
2012 Oct 23
1
factor or character
Hi,
The program below work very well.
(snps = c('rs621782_G', 'rs8087639_G', 'rs8094221_T', 'rs7227515_A',
'rs537202_C'))
Selec = todos[ , colnames(todos) %in% snps]
head(Selec)
But, I have a data set with 1.000 columns and I need extract 70 to use
(like snps in command above).
This 70 snps are in a file. So I create a file to extract them with
2012 Nov 08
3
Extracting columns
Hi,
I have 22 files (A1, A2, ..., A22) with different number of columns,
totaling 10,000 columns: c1, c2, c3, ..., c10000
I have another file with a list of 100 columns that I need to extract.
These 100 columns are distributed in 22 files.
How to extract the 100 columns of the 22 files?
I have done it "manually" with the following commands, for example:
cromo1 = read.table ("~
2013 Apr 10
6
means in tables
Hi.
I have 2 tables, with same dimensions (8000 x 5). Something like:
tab1:
V1 V2 V3 V4 V5
14.23 1.71 2.43 15.6 127
13.20 1.78 2.14 11.2 100
13.16 2.36 2.67 18.6 101
14.37 1.95 2.50 16.8 113
13.24 2.59 2.87 21.0 118
tab2:
V1 V2 V3 V4 V5
1.23 1.1 2.3 1.6 17
1.20 1.8 2.4 1.2 10
1.16 2.6 2.7 1.6 11
1.37 1.5 2.0 1.8 13
1.24 2.9 2.7 2.0 18
I need generate a table of averages, the
2012 Jul 25
1
regression analysis
Hi,
I have to do 10,000 linear regression analysis, and the response variable
(RESP) is the same for all independent variables (10,000).
y ~ x[i]
i = 1, ..., 10000
For each analysis must extract the p-value and put them in an orderly
increasing.
I thought an analysis of the type:
ana = numeric(10000)
for(i in 1:10000){
mod = lm(RESP~x[i]
p-value[i] = summary(mod)$coe[2,4]
}
Could
2010 Aug 13
3
Games
Hi,
I want to build the table of a football league with 11
teams. All play together. So will 55 games.
Since there are an odd number of teams in each round a team
will not play.
The games will be:
games = urnsamples(1:11, x =
c('A','B','C','D','E','F','G','H','I','J','K'), size=2,
replace=F,
2010 Mar 24
2
Mosaic
Hi,
I have this data set:
obitoss = c(
5.8,17.4,5.9,17.6,5.8,17.5,4.7,15.8,
3.8,13.4,3.8,13.5,3.7,13.4,3.4,13.6,
4.4,17.3,4.3,17.4,4.2,17.5,4.3,17.0,
4.4,13.6,5.1,14.6,5.7,13.5,3.6,13.3,
6.5,19.6,6.4,19.4,6.3,19.5,6.0,19.7)
(dados = data.frame(
regiao = factor(rep(c('Norte', 'Nordeste', 'Sudeste', 'Sul',
'Centro-Oeste'), each=8)),
ano =
2010 Jul 21
1
xtable
Hi,
How do I build a table from a regression model adjusted
using xtable?
Commands are:
modelo1 = lm(Y~X1 + X2)
influencia = influence.measures(modelo1)
require(xtable)
xtable(influencia)
but it isn't work.
Thanks,
--------------------------------------
Silvano Cesar da Costa
Departamento de Estat?stica
Universidade Estadual de Londrina
Fone: 3371-4346
2010 May 05
3
Latex and Stangle()
Hi,
I'm using the Sweave and I would like include codes of the R
in my LaTeX file.
I extracts the R code with Stangle (), whose name is
Relatorio.R but I can't include it
in the Latex file as an appendix.
Suggests?
Thanks,
--------------------------------------
Silvano Cesar da Costa
Departamento de Estat?stica
Universidade Estadual de Londrina
Fone: 3371-4346
2011 May 05
1
Boxplot in order
Hi,
I need construct box plot graph, but I want keep Groups
order
karla = data.frame(
Groups =
factor(rep(c('CPre','SPre','C7','S7','C14','S14','C21','S21'),
11)),
Time = rep(c(0,7,14,21), 11),
Resp = valor
)
boxplot(Resp~Groups, order=T)
doesn't work.
How do this?
--------------------------------------
Silvano Cesar da
2011 Aug 16
1
Fit Gompertz' curve'
Hi,
I build a graph taking into account the times: 1,
2,4,6,8,10,12,15,18,21,24,28,32 and 48.
Be that the scale of the X axis does not look right. It
seems equidistant. (graph attached)
What changes have I to do in the following commands so that
the scale be correct?
interaction.plot(Tempo, Trat, Valor, ylim=c(0, 2), las=1,
lty=c(1,2,3,4), lwd=3, bty='l',
2011 Jul 06
3
Tables and merge
----- Original Message -----
From: "Silvano" <silvano at uel.br>
To: <r-help at r-project.org>
Sent: Thursday, June 30, 2011 9:07 AM
Subject: Tables and merge
> Hi,
>
> I have 21 files which is common variable CODE.
> Each file refers to a question.
>
> I would like to join the 21 files into one, to construct
> tables for each question by CODE.
>
2010 Feb 05
1
About graphics
Hi,
I'm building a graph (barplot) in which the X axis label
disappears.
I tried to use the option mgp of par() and I could not get
the desired result.
Note that want the axis labels horizontally.
caes = c(37,20,19,16,75,103)
names(caes) = c("Pinscher", "Pastor \n Alem?o", "Poodle",
"Rottweiller", "SRD", "Outros")
caess =
2010 Nov 03
1
Tukey's table
Hi,
I'm building Tukey's table using qtukey function.
It happens that I can't get the values of Tukey's one degree
of freedom and also wanted to eliminate the first column.
The program is:
Trat <- c(1:30) # number of treatments
gl <- c(1:30, 40, 60, 120) # degree freedom
tukval <- matrix(0, nr=length(gl), nc=length(Trat))
for(i in
2010 May 10
2
Extracting a subset
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
2010 Feb 17
2
Split Plot and Tukey
Hi,
I did the analysis of variance of a split-plot and the
effect of treatment was significant.
I would like compare treatment means using Tukey.
I can't extract the mean square to apply HSD.test to use in
agricolae package.
anava = aov(ganhos ~ Blocos + Trat*Supl +
Error(Blocos/Trat))
names(anava)
summary(anava)
require(agricolae)
HSD.test(ganhos, Trat, df, MSerror, alpha = 0.05)
2010 Apr 01
2
About logistic regression
Hi,
I have a dichotomous variable (Q1) whose answers are Yes or
No.
Also I have 2 categorical explanatory variables (V1 and V2)
with two levels each.
I used logistic regression to determine whether there is an
effect of V1, V2 or an interaction between them.
I used the R and SAS, just for the conference. It happens
that there is disagreement about the effect of the
explanatory variables
2011 Nov 29
1
Notation
Hi,
what's mean "/" in command:
betareg(inf~Grupo/Sexo, data=dados)
it's a effect nested?
--------------------------------------
Silvano Cesar da Costa
Departamento de Estat?stica
Universidade Estadual de Londrina
Fone: 3371-4346
2010 Feb 26
1
Hartley's table
Hi,
Does anyone know how to generate Hartley's table in R?
--------------------------------------
Silvano Cesar da Costa
Departamento de Estat?stica
Universidade Estadual de Londrina
Fone: 3371-4346
2010 Jun 14
2
xtable with Sweave
Hi,
I'm using Sweave to prepare a descriptive report.
Are at least 20 tables built with xtable command of kind:
<<echo=F, results=hide>>=
q5 = factor(Q5, label=c("N?o", "Sim"))
(q5.tab = cbind(table(q5)))
@
<<echo=F, results=tex>>=
xtable(q5.tab, align="l|c", caption.placement = "top",
table.placement='H')
@
I'm