Displaying 20 results from an estimated 1000 matches similar to: "pass lm( ) a char vector as the variables to be included"
2004 Aug 25
3
Help using Hmisc / Latex
Dear R users,
I'm trying to automatically generate a *.tex file with the output of an OLS
estimation. Some people suggested to use the latex function on the Hmisc
package. I'm having a bit of trouble to properly specify this function (I'm
not a very experienced R user). Below you will find an example, of what I'm
doing.
## Annette Dobson (1990) "An Introduction to Generalized
2007 Aug 31
2
Bugreport on integration of Sweave and latex beamer
I think I have isolated a problem with integration between Sweave and beamer.
Could you please see the file:
http://www.mayin.org/ajayshah/tmp/bugdemo.Rnw
Unfortunately, it uses some of my internal libraries, so you can't run
it. When I put it through Sweave, I get:
http://www.mayin.org/ajayshah/tmp/bugdemo.tex
which is, of course, a generic latex file which you can read and
2014 May 12
2
Duda_TEST DE WALD
Buenos días,
Gracias Carlos, siguiendo el ejemplo que comentas, esto es lo que he
introducido en el Scrip de RStudio:
*library(xlsx)*
*library(xlsxjars)*
*library(rJava)*
*library(aod)*
*R<-read.csv("2002.CSV", sep=";", dec=",", header=T)*
*attach(R)*
*group<-gl(2,670,1340,labels= c("AVE", "Log.Imports.Value.in.1000.USD"))*
2007 Aug 13
1
p value statistic for lm object
Hi,
I conduct a univariate regression with lm function. I would like to get
the p value for the regression. Is there a method that would enable me to
extract the p value into a variable.
Thanks.
Arjun Bhandari
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2006 May 23
3
Regression through the origin
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2011 Dec 04
6
Problema (¿bicho?) en función lm, R 2.14.0
Hola:
Al tratar de utilizar la función lm R explota, no se si se trata de un
problema de mi máquina o me he dado de bruces con un bicho.
Después de intentar depurar mi código he probado lo más básico, abrir R
(probado en consola y Rkward) y lanzar los ejemplos de lm, esto es lo
que me encuentro:
---------- Corte desde la consola -------------------
R version 2.14.0 (2011-10-31)
Copyright (C)
2011 Dec 05
1
Illegal operation with lm on Debian Sid, PowerPC architecture
Hello all:
(First of all, sorry for my very bad english)
I came from R-help-es with this problem, they say me this is a better
place to find a solution, I hope that.
I try to use lm function, then R exploit. After I cleaned my code
without success I try the basic: open R (try on console and Rkward) and
run lm examples, this is the output:
---------- console cut -------------------
R version
2014 May 10
2
Duda_TEST DE WALD
Hola a todos y todas,
Gracias por vuestro apoyo en cantidad de preguntas anteriores, de nuevo os
escribo para compartir una duda:
Estoy trabajando con un modelo bien sencillo, es una regresión simple, pero
me gustaría comprobar la significación estadística de cada uno de los
coeficientes de regresión en el modelo. La idea es hacer un contraste de
hipótesis.
Me he descargado el paquete
2008 Jul 25
2
graphing regression coefficients and standard errors
Hello,
I am interested in plotting my regression analysis
results(regression coefficients and standard errors obtained through OLS and
Tobit models)
in the form of graphs.What is the best way to accomplish this? Thanks.
Murali Kuchibhotla
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2012 Nov 23
1
Results displayed in Console
General question concerning summary results of a linear model. I've tried to
look in help and search online but I either don't understand it or I can't
find the answer.
I've defined a model with a really large number of variables and levels. The
summary results are so big that not all of the coefficients etc can be
displayed completely in the console. I try to scroll back and
2008 Jun 08
1
exponential distribution
Dear all,
I've tried to solve the Es. 12, cap 4 of "Introduction to GLM" by Annette Dobson.
It's about the relationship between survival time of leukemia patients and blood cell count.
I tried to fit a model with exponential distribution, first by glm (family gamma and then dispersion parameter fixed to 1) and
then with survreg.
They gave me the same point estimates but the
2005 Feb 17
2
dumping the summary of lm to a text file
Hello list,
I have a linear regression
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <- gl(2,10,20, labels=c("Ctl","Trt"))
weight <- c(ctl, trt)
reg <- lm(weight ~ group)
sreg <- summary(reg)
and I would like to dump exactly what I see on the console with
2006 Nov 09
1
Extracting the full coefficient matrix from a gls summary?
Hi,
I am trying to extract the coefficients matrix from a gls summary.
Contrary to the lm function, the command fit$coefficients returns
only the estimates of the model, not the whole matrix including the
std errors, the t and the p values.
example:
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <-
2004 May 30
1
summary.lm
I ran across this error the other day while using lm(). I confess that I
haven't used it for awhile and haven't been tracking the changes between
versions of R. However, the piece of code below is a tiny modification of
the example in the help file for "lm". I just separated the commands apart
for clarity. A similar piece comes from the help file for
2013 Nov 29
2
Listas en R
Hola.
Me interesa meter una serie de regresiones lineales en una lista a la
que voy a denominar L.
El problema es que a posteriori necesito sacar valores de esas regresiones.
Sin embargo, al llamar a L[1] este no es un objeto del tipo "lm" sino que es
del tipo "list" y no puedo aplicarle funciones relacionadas con la
regresión (tal y como puede ser hacer un summary para
2010 Aug 12
3
Median abline how-to ?
Hi,
I'm newbie with R and don't really know how to add a median line to each
of the groups that is not all the plot long.
Here is a small working code that i have adapted for my purpose. If
somebody could tell me how to draw median lines on each group and not
all plot long.
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <-
2003 Aug 27
2
Basic GLM: residuals definition
Dear R Users,
I suppose this is a school boy question, but here it is anyway. I'm trying to re-create the residuals for a poisson GLM with simulated data;
x<-rpois(1000,5)
model<-glm(x~1,poisson)
my.resids<-(log(x)- summary(model)$coefficients[1])
plot(my.resids,residuals(model))
This shows that my calculated residuals (my.resids) are not the same as residuals(model).
p 65 of
2009 Feb 28
3
Extract statistics from lm()
Hi, perhaps this question was answered previously however I could not find
them. My problem is how how to extract a particular statistic from the
result given by lm(). For e.g.
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <- gl(2,10,20, labels=c("Ctl","Trt"))
weight <- c(ctl, trt)
>
2009 Sep 03
1
Export objects
<r-help@r-project.org>
Hi, R users,
How can I export an R object as a .txt file? As an example I have the result
from a regression and I need to save this object in a .txt file
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group <- gl(2,10,20, labels=c("Ctl","Trt"))
weight <- c(ctl,
2008 Jul 16
1
Output design question
Dear R-helpers,
I was curious why the output of summary (and many other functions in
R) does not add a separator between the name of a factor and the label
of a level (e.g., in the example below, 'group Trt'). If the user had
lower case labels (e.g., 'trt'), the output would be particularly hard
to read.
ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt