Hello, R users!
I am struggling with the following problem:
I need to compute a P-value for a mixture of two chi-squared
distributions. My P-value is given by:
P = 0.5*prob(sqrt(chi2(1)) = x) + 0.5*prob(sqrt(chi2(2)) = x)
In words, I need to compute the p-value for 5050 mixture of the square
Hello, R users!
I am struggling with the following problem:
I need to compute a P-value for a mixture of two chi-squared
distributions. My P-value is given by:
P = 0.5*prob(sqrt(chi2(1)) = x) + 0.5*prob(sqrt(chi2(2)) = x)
In words, I need to compute the p-value for 5050 mixture of the square
I build a test package in order to publish my own package to bioconductor.
I am using package.skeleton
Step 1. create test package mypkg
 f - function(x,y) x+y
 package.skeleton(list=c(f), name=mypkg)
Step 2. build tar.gz file
{mars:/local/workspace01/zhangju/R_autopackage_Elbow}../bin/R
Hello peter,
Thanks for the comment. wilcox.exact is simpler as you pointed out but the
fact that it is no longer being developed is somewhat concerning.
Regards
Janh
On Fri, May 31, 2013 at 6:50 PM, Peter Ehlers ehl...@ucalgary.ca wrote:
On 2013-05-30 20:20, Janh Anni wrote:
Hello Greg,
You should seek local statistical help. This list is not the right
place to seek what appears to be statistical consulting and, indeed,
basic statistical instruction.
-- Bert
On Fri, May 31, 2013 at 6:27 PM, Luis Fernando García Hernández
luysgar...@gmail.com wrote:
Dear Friends,
I am new on
On 01-06-2013, at 02:56, Justin dly...@yahoo.com wrote:
I build a test package in order to publish my own package to bioconductor.
I am using package.skeleton
Step 1. create test package mypkg
f - function(x,y) x+y
package.skeleton(list=c(f), name=mypkg)
Step 2. build tar.gz file
hi R-users,
I have a file as shown below,and the first column is time information.
2012-08-07 00:00:00,4174830,5,8.1,34.5,9.5,32,14
2012-08-07 00:00:01,4174831,4.7,8.6,34.5,9.9,29,14
2012-08-07 00:00:02,4174832,4.7,8.6,34.5,9.9,29,14
2012-08-07 00:00:03,4174833,5,8.5,34.5,9.8,30,14
2012-08-07
On 2013/6/1 15:54, Jie Tang wrote:
hi R-users,
I have a file as shown below,and the first column is time information.
2012-08-07 00:00:00,4174830,5,8.1,34.5,9.5,32,14
2012-08-07 00:00:01,4174831,4.7,8.6,34.5,9.9,29,14
2012-08-07 00:00:02,4174832,4.7,8.6,34.5,9.9,29,14
2012-08-07
Hello,
Just use ?read.csv with argument header = FALSE.
wnd_data - read.csv(text = '
2012-08-07 00:00:00,4174830,5,8.1,34.5,9.5,32,14
2012-08-07 00:00:01,4174831,4.7,8.6,34.5,9.9,29,14
2012-08-07 00:00:02,4174832,4.7,8.6,34.5,9.9,29,14
2012-08-07 00:00:03,4174833,5,8.5,34.5,9.8,30,14
Le vendredi 31 mai 2013 à 22:27 -0300, Luis Fernando García Hernández a
écrit :
Dear Friends,
I am new on R so I ask you to excuse me if this question sounds fool. I
want to see if there is a significativa relationship between the mating
(response variable) and several explanatory variables
Hello,
Try the following.
dmix - function(x){
dens - function(x, df) dchisq(x^2, df = df)*2*x
0.5*dens(x, df = 1) + 0.5*dens(x, df = 2)
}
pmix - function(x, lower.tail = TRUE){
p - integrate(dmix, lower = 0, upper = x)
if(lower.tail) p$value else 1 - p$value
}
Hi all,
I tried to look this up online, but am still feeling a little stuck.
I have a bunch of Rdata files in side my directory, and I would like to
load all of them in a loop. Each time the next is read in, it would
over-write the previously read in object because they will be assigned the
same
Hello,
Or, if you want to pass a vector of quantiles to pmix,
pmix - function(x, lower.tail = TRUE){
p - sapply(x, function(.x) integrate(dmix, lower = 0, upper =
.x)$value)
if(lower.tail) p else 1 - p
}
Rui Barradas
Em 01-06-2013 11:13, Rui Barradas escreveu:
Hello,
Try
use 'lapply' to read in the .RData file. Therefore each file is stored as an
element of a list thatb
you can access and change as necessary.
Sent from my iPad
On Jun 1, 2013, at 6:18, Jeremy Ng jeremy.ng.wk1...@gmail.com wrote:
Hi all,
I tried to look this up online, but am still feeling
Ethan,
Jim Lemon skrev 2013-05-24 00:09:
On 05/24/2013 06:21 AM, Belair, Ethan D wrote:
example.plot = xyplot(ht ~ time|tree, data=data,
type = c(r, g, p),
par.settings=simpleTheme(col=blue),
main=abc,
)
example.plot
...
If you
On 01.06.2013 02:02, Ranjan Maitra wrote:
On Fri, 31 May 2013 18:10:19 -0500 Robert Baer rb...@atsu.edu wrote:
On 5/31/2013 11:59 AM, Ranjan Maitra wrote:
Hi John,
I suspect you may be missing a c()?
On Fri, 31 May 2013 06:05:45 -0800 John Kane jrkrid...@inbox.com
wrote:
paks -
On 01.06.2013 14:58, Uwe Ligges wrote:
On 01.06.2013 02:02, Ranjan Maitra wrote:
On Fri, 31 May 2013 18:10:19 -0500 Robert Baer rb...@atsu.edu wrote:
On 5/31/2013 11:59 AM, Ranjan Maitra wrote:
Hi John,
I suspect you may be missing a c()?
On Fri, 31 May 2013 06:05:45 -0800 John Kane
On 01.06.2013 08:26, Berend Hasselman wrote:
On 01-06-2013, at 02:56, Justin dly...@yahoo.com wrote:
I build a test package in order to publish my own package to bioconductor.
I am using package.skeleton
Step 1. create test package mypkg
f - function(x,y) x+y
Thanks Uwe. installed.packages() is definitely faster and better.
I don't think I even knew installed.packages() existed. I think I gave up
looking for something like it a year or so ago.
John Kane
Kingston ON Canada
-Original Message-
From: lig...@statistik.tu-dortmund.de
Sent:
On Jun 1, 2013, at 06:32 , Tiago V. Pereira wrote:
Hello, R users!
I am struggling with the following problem:
I need to compute a P-value for a mixture of two chi-squared
distributions. My P-value is given by:
P = 0.5*prob(sqrt(chi2(1)) = x) + 0.5*prob(sqrt(chi2(2)) = x)
In words,
On Sat, 1 Jun 2013 14:58:22 +0200 Uwe Ligges
lig...@statistik.tu-dortmund.de wrote:
On 01.06.2013 02:02, Ranjan Maitra wrote:
On Fri, 31 May 2013 18:10:19 -0500 Robert Baer rb...@atsu.edu wrote:
On 5/31/2013 11:59 AM, Ranjan Maitra wrote:
Hi John,
I suspect you may be missing a
Dear Ista,
Thanks for the suggestion. I've changed the comment function to feedback.
Best,
Johnny
From: Ista Zahn istaz...@gmail.com
Cc: r-help@r-project.org r-help@r-project.org
Sent: Friday, May 31, 2013 5:56 PM
Subject: Re: [R] More discussion on R usage
On 01.06.2013 15:58, Ranjan Maitra wrote:
On Sat, 1 Jun 2013 14:58:22 +0200 Uwe Ligges
lig...@statistik.tu-dortmund.de wrote:
On 01.06.2013 02:02, Ranjan Maitra wrote:
On Fri, 31 May 2013 18:10:19 -0500 Robert Baer rb...@atsu.edu wrote:
On 5/31/2013 11:59 AM, Ranjan Maitra wrote:
Hi
On Sat, 1 Jun 2013 16:51:19 +0200 Uwe Ligges
lig...@statistik.tu-dortmund.de wrote:
On 01.06.2013 15:58, Ranjan Maitra wrote:
On Sat, 1 Jun 2013 14:58:22 +0200 Uwe Ligges
lig...@statistik.tu-dortmund.de wrote:
On 01.06.2013 02:02, Ranjan Maitra wrote:
On Fri, 31 May 2013
Within lapply load the file and return the value of the thing or
things in the file you want. Something like this:
files
[1] x1.RData x2.RData x3.RData x4.RData
lapply(files,function(z){load(z);x})
[[1]]
[1] 1
[[2]]
[1] 22
[[3]]
[1] 333
[[4]]
[1]
Each of my files contains a single
Just a quick note: The following two versions of your function don't
give the same results. I'm not sure why, and also not sure why the
criterion for 'near' should be expressed in squared distance.
# version 1
rgb2col - local({
hex2dec - function(hexnums) {
# suggestion of Eik
Hi Michael,
Thanks for the Wikipedia tip -- I'd looked there but didn't find this
article. The article explains that the Lab colour space was formulated to
provide uniform perceptual differences between colours, with a JND of
approximately of 2.3. Ken Knoblauch made a similar point. The article
On Sat, Jun 1, 2013 at 6:18 AM, Jeremy Ng jeremy.ng.wk1...@gmail.com wrote:
Hi all,
I tried to look this up online, but am still feeling a little stuck.
I have a bunch of Rdata files in side my directory, and I would like to
load all of them in a loop. Each time the next is read in, it would
Hi John,
Out of curiosity and if it is not much trouble, I would be curious if Luv
worked any better than Lab. I think that Luv is supposed to be preferred for
monitors and Lab for surfaces but they are generally pretty similar.
Best,
Ken
Sent from my iPhone
___
Ken Knoblauch
Inserm U846
Milan Bouchet-Valat nalimilan at club.fr writes:
Le vendredi 31 mai 2013 à 22:27 -0300, Luis Fernando García Hernández a
écrit :
Dear Friends,
I am new on R so I ask you to excuse me if this question sounds fool. I
want to see if there is a significativa relationship between the
Hi Michael,
This has become a bit of a comedy of errors.
The bug is in Kevin Wright's code, which I adapted, and you too in your
version, which uses local() rather than function() to produce the closure.
The matrix which.col contains character data, as a consequence of binding
the minimum
Hi Ken,
I just tried that, and with a distance of 15 as the criterion, which seemed to
work well for Lav distances, I get fewer matches for the following example that
we've been using:
cols - c(#010101, #EE, #AA, #00AA00, #AA, #00,
#AA00AA, #00)
(nms - rgb2col(cols,
Hi John
I agree that the Lab representation is the best so far for the goal of
perceptually
similar colors, and the approximate JND of
2.3 on the distance scale in this space is a useful, non-arbitrary
criterion.
FWIW, your demo might better show the hex and color names adjacently,
for
I'd have to look it up and I'm not home at the moment. Can see later on. I
would have thought that it would be normalized to have a jnd equal to 1 but I'm
not sure.
Ken
Sent from my iPhone
___
Ken Knoblauch
Inserm U846
Stem-Cell and Brain Research Institute
18 av du Doyen Lépine
69500 Bron
Hello,
I don't understand why my mails are being held up. What could be the
problem?
Thanks
Janh
-- Forwarded message --
From: r-help-boun...@r-project.org
Date: Sat, Jun 1, 2013 at 1:48 PM
Subject: Your message to R-help awaits moderator approval
To: annij...@gmail.com
Your
Hello,
No, nothing wrong. (I feel silly for not having noticed it.) In fact not
only it's much simpler but it's also more accurate than the use of
accurate with the default rel.tol.
It should be better, however, to use lower.tail = FALSE, since the op
wants p-values.
0.5 * pchisq(x^2, 1,
Thank you very much, Rui and Peter, for you detailed and helpful tips!
It worked like a charm! I would spend more two weeks (or more) to figure
out that by myself.
Cheers!
Tiago
Hello,
No, nothing wrong. (I feel silly for not having noticed it.) In fact not
only it's much simpler but it's
[See at end]
On 01-Jun-2013 17:52:01 Janh Anni wrote:
Hello,
I don't understand why my mails are being held up. What could be the
problem?
Thanks
Janh
-- Forwarded message --
From: r-help-boun...@r-project.org
Date: Sat, Jun 1, 2013 at 1:48 PM
Subject: Your message
R-helpers:
Say I'm developing a package that has a set of user-definable options that
I would like to be persistent across R-invocations (they are saved
someplace). Of course, I can create a little text file to be written/read,
but I was wondering if there is an officially sanctioned way to do
Hi,
I need to dowload a time series with arbitray start date and end date, from
this site:
http://www.mcxindia.com/sitepages/SpotMarketHistory.aspx?sLinkPage=Y
While I can download my required data manually, I would like R to do that for
me. I have tried 'quandl' package, however could not
Google is your friend!
A google search on download internet data in R brought up this:
http://www.slideshare.net/schamber/web-data-from-r
-- Bert
On Sat, Jun 1, 2013 at 1:14 PM, Ron Michael ron_michae...@yahoo.com wrote:
Hi,
I need to dowload a time series with arbitray start date and end
Okay. Thanks!
Janh
On Sat, Jun 1, 2013 at 3:11 PM, Ted Harding ted.hard...@wlandres.netwrote:
[See at end]
On 01-Jun-2013 17:52:01 Janh Anni wrote:
Hello,
I don't understand why my mails are being held up. What could be the
problem?
Thanks
Janh
-- Forwarded message
Inline.
Em 01-06-2013 19:41, Rui Barradas escreveu:
Hello,
No, nothing wrong. (I feel silly for not having noticed it.) In fact not
only it's much simpler but it's also more accurate than the use of
accurate with the default rel.tol.
Correction: ...than the use of _integrate()_ with the
hope this helps.. :)
# define an object `x`
x - list( any value here , 10 )
# set `myoption` to that object
options( myoption = x )
# retrieve it later (perhaps within a function elsewhere in the package)
( y - getOption( myoption ) )
it's nice to name your options
On 01/06/2013 22:44, Anthony Damico wrote:
hope this helps.. :)
# define an object `x`
x - list( any value here , 10 )
# set `myoption` to that object
options( myoption = x )
# retrieve it later (perhaps within a function elsewhere in the package)
( y -
Hi All
I am trying to implement a neural model in R from a paper but I have run
into a bit of a problem. The model is getting so complex that I can't
really test it in bits any more. At the moment I get this error:
Error in eval(expr, envir, enclos) : object 'mCaT_soma_AB' not found
I think I
I just did a search through the source and never did find a place that
'mCaT_soma_AB' was defined. How can you expect to use it if it has not
been defined.
On Sat, Jun 1, 2013 at 8:50 PM, Jannetta Steyn janne...@henning.org wrote:
Hi All
I am trying to implement a neural model in R from a
Good afternoon,
I am trying to use a mixed-effect model to find the best predictors of
wildlife response (fledgling success, offspring growth rate, etc...) to
human disturbance. I am using a Log Response Ratio as my measure of effect
size along with study variance, and testing to see how:
Janh,
Janh Anni skrev 2013-06-01 04:27:
Hello peter,
Thanks for the comment. wilcox.exact is simpler as you pointed out but the
fact that it is no longer being developed is somewhat concerning.
Admittedly, 'coin' is being actively developed and has a lot more bells
and whistles. But for
Hello All,
Thanks a lot for the helpful suggestions. I wonder how ties are handled
for the rank sum test by wilcox_test and wilcox.exact? For instance, other
software such as Minitab correct for ties by adjusting the variance of the
test statistic, and actually provide the p values before and
Hi,all:
I want to perform multiple correspondance analysis via MCA{FactoMineR}.
The data is in the attachment.
My code:
dat-read.delim(e:\\mydata.txt,header=T)
MCA(dat,quanti.sup=7,quali.sup=1:6)
Error in `[.data.frame`(tab, , i) : undefined columns selected
My question:
Why does the error
I need to do this on very large datasets ( a few million data points). So
seeking help in figuring out an implementation of the task.
Input 4 vectors which contain values as 0 or 1. (as integers, not boolean
bits)
vec_A = ( 0, 1, 0, 0, .. 1, 0, 1, 0) etc
vec_B = (0,0,1,1.)
vec_C, vec_D
My newer laptop died so I installed R on an older Vista laptop.
I did follow the online instructions about giving myself full control under
the R properties security tab.
I made changes in the R console file under the etc folder to use bold type
in color Black, but it is not doing what I ask.
I am
Hi all,
I am attempting to do Regularized Discriminant Analysis (RDA) on a large
dataset, and I want to extract the RDA discriminant score matrix. But
the predict function in the klaR package, unlike the predict function
for LDA in the MASS package, doesn't seem to give me an option to
Hi,
I would like to plot the gam function for the following:
GAM1-gam(Sources~lo(Depth, span=0.5, degree=1) + Station,
family=gaussian())
plot.gam(GAM1,residuals=TRUE, rugplot=FALSE, se=TRUE).
I could do this fine when Station wasn't a variable. But now that I am
For 10 million data points
table(interaction(vec_D, vec_C, vec_B, vec_A))
took my laptop 11.45 seconds and the following function required 0.18 seconds
f0 - function (vec_A, vec_B, vec_C, vec_D)
{
x - 1 + vec_A + 2 * (vec_B + 2 * (vec_C + 2 * vec_D))
tab - tabulate(x, nbins =
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