Use a smaller alpha value rather than 0.05.
C
On Thu, Aug 14, 2008 at 10:14 AM, Mark Home <[EMAIL PROTECTED]> wrote:
> Dear All:
>
> I have a clinical study where I would like to compare the demographic
> information for 2 samples in a study. The demographics include both
> categorical and con
Dear R helpers,
I have a question regarding wordpress and R. I have asked this
question in Wordpress support (
http://wordpress.org/support/topic/368312 ) but there is no answer so
far, maybe the R community can have a better answer.
I followed the excellent tutorial on r-statistics-blog (
http:/
d, Feb 24, 2010 at 11:40 PM, C.H. wrote:
>> Dear R helpers,
>>
>> I have a question regarding wordpress and R. I have asked this
>> question in Wordpress support (
>> http://wordpress.org/support/topic/368312 ) but there is no answer so
>> far, maybe the R commun
pwr package:
ES.h and ES.w1, ES.w2, cohen.ES
On Wed, Mar 17, 2010 at 1:28 PM, Jim Silverton wrote:
> Hello,
> I would like to find out how to use R to compute the effect size of two
> samples for a two sample t test. Is there a formula for the fisher's exact
> test? Any R code and/or formula w
?polr of the MASS package.
On Mon, Mar 29, 2010 at 10:39 AM, Ravi Kulkarni wrote:
>
> How do I use the "extra" information that two of my predictors are ordinal?
> (I did not know I could do that.)
>
> Thanks,
> Ravi
> --
> View this message in context:
> http://n4.nabble.com/Coding-of-categor
This one does required the metafor package.
http://tables2graphs.com/doku.php?id=04_regression_coefficients
On Mon, Dec 14, 2009 at 8:13 AM, Kim Jung Hwa wrote:
> Hi All,
>
> I'm fitting a Poisson regression. And I want to plot 95% Confidence Interval
> of Regression Estimates.
>
> After comin
The plot function in meta (not rmeta) can specify xlim.
http://cran.r-project.org/web/packages/meta/index.html
Regards,
CH
On Tue, May 12, 2009 at 9:08 AM, Waverley wrote:
> Hi,
>
> I am using rmeta forestplot function. The values to plot and their
> 95% upper and lower are of both positive
You may refer to the R News article on qcc package by Scrucca.
http://cran.r-project.org/doc/Rnews/Rnews_2004-1.pdf
On Wed, Apr 22, 2009 at 4:00 AM, Erin Hodgess wrote:
> Dear R People:
>
> Is there a Quality Control in R book that would be accessible for
> undergraduates, please?
>
> I'm teac
There is a book on data manipulation using R.
Data manipulation with R.
http://www.springer.com/statistics/computational/book/978-0-387-74730-9
It highlighted how comprehensive the data manipulation capabilities of R can be.
Regards,
CH
On Wed, May 6, 2009 at 10:01 PM, Simon Pickett wrote:
?which.max
On Fri, Jan 11, 2013 at 7:59 AM, ej wrote:
> apply(m, 1, max)
__
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 comment
One approach is to build an agent to play the game repeatably and then
calculate the winning odds if a particular card is played.
The logical first step is to implement a playable version of the game using R.
http://www.personeel.unimaas.nl/g-chaslot/papers/ACGSzitaChaslotSpronck.pdf
On Mon, Mar
FSelector
Maybe chi-sq is a good starting point.
On Wed, Mar 13, 2013 at 2:02 PM, Venkata Satish Basva
wrote:
> Hi,
> I am doing a project on authorship attribution, where my term document
> matrix has around 10450 features.
> Can you please suggest me a package where I can find the feature sele
Pizza can be ordered from R (fortune 66), why not tts?
Under Debian, I can tts by apt-get install the tts engine espeak and
then use the simple system call under R
> system("espeak", input="hello world, howdy")
On Thu, Oct 4, 2012 at 8:31 PM, Alex Zhang wrote:
> Dear all,
>
> Excuse me for my
I guess you are using Arch.
I think it might be related to the fonts. Try to install good Chinese
font such as ttf-wqy-zenhei. In my (debian) system, I have only
installed this font and it plots in R without hiccups.
On Wed, Oct 17, 2012 at 9:45 AM, Manish Gupta wrote:
> Hi,
>
>
> I also did t
Have a look at the littler.
http://dirk.eddelbuettel.com/code/littler.html
On Sun, Sep 29, 2013 at 3:36 AM, Tomek R wrote:
> Hi,
> I have found myself often doing simple statistical analysis using Linux
> command line on a single dataset. Therefore, I put a perl script together,
> which makes
Dear R users in Hong Kong,
Hello. Any HK R users in HK would like to organize a regular users'
group meeting like LA, NY, London, Osaka... etc ? Maybe some
demonstrations, lightning talks, beginner tutorials. Thanks.
Regards,
CH
--
CH Chan
__
R-help
Dear R users,
I have a very simple question and I've tried to search for the answer.
(But failed.)
there should be a function (func) that work like
> abc <- c(1,2,3,4)
> func(abc)
"abc"
I would like to know the name of that function. Thank you very much
for your help.
Regards,
CH
--
CH Chan
http://r-forge.r-project.org/projects/tuner/
On Mon, Sep 20, 2010 at 8:35 AM, Deb Midya wrote:
> Hi R Users,
>
> Thanks in advance.
>
> I am using R-2.11.1 on Windows XP.
>
> May I request you to assist me for the following please.
>
> 1. Is there any R-package or if any to compose music?
Dear R users,
Suppose I have an vector like this:
animal <- c("Tiger","Panda")
I would like to know is there any function that check for the
existence of certain item in a vector.
e.g.
> func("Tiger",animal) # check for the existence of "Tiger"
TRUE
> func("Acacia",animal) #Acacia is not an i
The correct command for forest plot should be "plot" (instead of
"forest") if you are using metagen from meta package.
For help:
?plot.meta
On Tue, Aug 24, 2010 at 11:03 AM, zhangweiwei wrote:
>
> Dear Sir or Madam,
>
>
>
> I am trying to plot forest plot. I extracted odds ratio and their
> co
Dear all,
I have a question regarding the odfweave. I created an odt file
(test_input.odt) using OO.o for WIndows XP. The code is generic.
Code for odt ---
\Sexpr{dim(iris)[1]}
<>=
odfItemize(levels(iris$Species))
@
Table 1:
<>=
data.frame(N =tapply(iris$Petal.Length, iris$Speci
Have a look at deducer.
http://www.deducer.org/manual.html
On Sat, Sep 4, 2010 at 12:20 PM, Soumen Pal wrote:
> Hi,
>
> I am a beginner in R. I have a query as below:
>
> Is it possible to develop a Windows based statistical software
> (user-friendly) like SPSS using R as a programming languag
Dear R Users,
I would like to know is there any package to create a plot like this?
http://dl.dropbox.com/u/5409929/cs1160521f01.gif
X axis is categorical. And the positions of the points are
corresponding to the frequency. (similar to violinplot)
Thank you.
Regards,
CH
--
CH Chan
ahn wrote:
> Hi,
> I don't understand what is being plotted here. Can you describe what
> you want in more detail?
>
> Best,
> Ista
>
> On Tue, Mar 8, 2011 at 7:27 AM, C.H. wrote:
>> Dear R Users,
>>
>> I would like to know is there any package to creat
Dear R experts,
I remember a similar function existed and have been mentioned in
R-help before. I tried my best to search but I really can't find it
out.
suppose I have an data frame like this:
> somedata <- data.frame(age.min = 1, age.max = 1.5, male = TRUE, l = -1.013,
> m=16.133, s=0.07656)
Dear all,
Suppose I have a data frame like this:
[code]
var1 <- c(1,999,2)
var2 <- c(999,1,2)
var3 <- c(1,2,999)
example <- data.frame(var1,var2,var3)
[/code]
I want to replace all 999 to NA in all observations in all columns. I
know how to do it in each individual column.
[code]
example$var1[e
Dear R experts,
Suppose I have an data frame likes this:
> example <- data.frame(age=c(1,2,3, 4,5,6), height=c(100,110,120,130,140,150),
> disease=c(TRUE, TRUE, TRUE, FALSE, FALSE, FALSE))
> example
age height disease
1 1100TRUE
2 2110TRUE
3 3120TRUE
4 4130
Learn by solving your own problem.
Break down your [real or toy] problem into solvable subtasks. Find out
how to solve these subtasks using R.
Quick-R is a good reference for task specific information.
http://www.statmethods.net/
On Thu, May 31, 2012 at 5:57 AM, arun.gurubaramurugeshan
wrote:
I think you have been hit by the problem of high variance. (overfitting)
Maybe you should consider doing a feature selection perhaps using the
chisq ranking from FSelector.
And then training the Naive Bayes using the top n features (n=1 to
200) as ranked by chisq, plot the AUCs or F1 score from b
This is one solution
?sapply
sapply(data.frame(iris$Sepal.Length, iris$Sepal.Width,
iris$Petal.Length, iris$Petal.Width), function(x)
(summary(aov(x~iris$Species
On Tue, Oct 11, 2011 at 5:10 PM, Joshua Wong wrote:
> Hi Guys,
>
> I have about 20 continous predictors and I want to do one-wa
Dear R users in Hong Kong,
Please join the HKRUG and we are organizing our 1st meeting.
https://groups.google.com/d/forum/hkrug
Thank you.
CH
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting
Dear All,
The following code illustrate the problem.
[R code]
require(tm)
exampledoc <- c("R is good", "R is really good")
examplecorpus <- Corpus(VectorSource(exampledoc), encoding = "UTF-8")
dtm <- DocumentTermMatrix(examplecorpus, control = list(minWordLength = 1))
as.matrix(dtm)
[/R code]
Th
You may consider the nortest package.
http://cran.r-project.org/web/packages/nortest/index.html
Regards,
CH
On Sat, Jul 12, 2008 at 11:30 PM, Bunny, lautloscrew.com
<[EMAIL PROTECTED]> wrote:
> Hi everybody,
>
> somehow i dont get the shapiro wilk test for normality. i just can´t find
> what th
You can using the default Linux (Xandros, Debian Based) and enable
Debian Etch Repo in eeepc to install R via apt-get.
http://lnxg.ca/?Hardware:Asus_Eeepc_701:EeePC_Tips
I can install R, LaTeX.
Regards,
C
On Dec 17, 2007 4:37 AM, Gabor Csardi <[EMAIL PROTECTED]> wrote:
> You can easily install
One simple reason: graphic.
On Jan 5, 2008 5:23 AM, Liviu Andronic <[EMAIL PROTECTED]> wrote:
> On 1/4/08, Alberto Monteiro <[EMAIL PROTECTED]> wrote:
> > I need arguments pro-S-PLUS and against SAS for a meeting I will
> > have next week. S-Plus is (90 - 99)% compatible with R, so using
> > S-Pl
Not particularly R related, but r related.
For pearson correlation, the test statistics is based on t distribution.
ts = r * sqrt ((n-2)/(1-r^2))
with n-2 degree of freedom.
I think you can solve this question, maybe a little bit of googling.
On Jan 14, 2008 1:39 PM, Sanglamt <[EMAIL PROTECTE
Dear R Gurus,
I have a problem related to plot.
For example, I have two variables, pre and post.
pre <- c(1,2,3,4,5)
post <- c(2,5,7,2,3)
How can I plot a line graph similar to this one?
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1847566&rendertype=figure&id=F1
Would you please
Dear experts,
I would like to know how to plot the log-minus-log plot for survival
analysis (to check the proportional assumption) in R.
Using the AML example.
fit <- survfit(Surv(time, status) ~ x, data=aml)
length(fit$surv) #20
as the length of fit$surv is shorter than aml$x and aml$time. I d
I tried the OpenEpi, the p-value of 1.25 is due to the fact that the
one tailed p-value is 0.62. The two tailed p-value then is 0.62 * 2 =
1.25. OpenEpi is not clever enough to ceiling the p-value to 1.
CH
On Sun, Mar 22, 2009 at 3:43 AM, David Winsemius wrote:
> Let me ask you: What degree of c
abc <- glm(x~y)
summary(abc)
On Wed, Mar 19, 2008 at 11:51 AM, Alex Wang <[EMAIL PROTECTED]> wrote:
> Hello all,
>
> I have a question concerning how to get the P-value for a explanatory
> variables based on GLM.
>
> I'll run multiple regressions with GLM, and I'll need the P-value for the
>
Because your test statistics (z=-9.16) is too small. (well, z> 1.96 or
Z < -1.96 is p=0.05)
If you really want the exact p, you can try
pnorm(-9.16)
if I were you I will quote p<0.001 as well as the test statistics. (if
you are going to submit it to medical journals)
C
On Thu, Oct 30, 2008 at 1
For the third one:
?anova.glm
test=Chisq will be LRT.
For the first two, you can have the answer from ordinary stat book.
On Wed, Nov 5, 2008 at 1:11 PM, Maithili Shiva <[EMAIL PROTECTED]> wrote:
> Hi!
>
> I am working on the Logistic Regression using R. My R script is as follows
>
>
> ONS <-
Are you dealing with some rainfall data for your schoolwork?
Few days ago, somebody asked exactly the same question.
read this one to know how to calculate the H value (An Alternative
Formula for the Calculation of H)
http://faculty.vassar.edu/lowry/ch14a.html
You can calculate the rank by rank()
Actually, SPSS do have condition LR which can be simulate using Cox
Proportional Hazards regression.
For R, Conditional LR is clogit inside survival package.
?clogit may help.
Regards,
C
On Fri, Nov 28, 2008 at 5:43 PM, amit nirmalkar <[EMAIL PROTECTED]> wrote:
> Dear Sir
>
> I am Amit Nirmal
Aquamacs preinstalled ess-mode.
http://aquamacs.org/
On Fri, Nov 28, 2008 at 11:57 PM, Blanchette, Marco
<[EMAIL PROTECTED]> wrote:
> Carbon emacs ( http://homepage.mac.com/zenitani/emacs-e.html) using the
> ess-mode ( http://ess.r-project.org/). Amazingly good integration of
> different buffe
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