Dear Jeff, Franklin, Eike and other interested parties,
I agree that the help page for fft() deserves a bit more detail;
its source is
https://svn.r-project.org/R/trunk/src/library/stats/man/fft.Rd
For instance, it has the comment
%%
%% Here, we should really have a nice \deqn{}{} giving
I usually need to compute P-values as following:
1. generate one sample (usually it is a matrix)
2. apply several methods (I already wrote a subfunction for each method,
and they are independent) to the generated sample to get pvalues.
3. compare the pvalues.
Since each method mentioned above
Hi,
You already asked this here
(http://stackoverflow.com/questions/28357210/parallel-computing-in-r)
and got some comments.
Regards,
Pascal
On Fri, Feb 6, 2015 at 11:58 AM, Zhenchuan Wang zwan...@mtu.edu wrote:
I usually need to compute P-values as following:
1. generate one sample (usually
Hi,
What exactly is the difference between using symm=TRUE and symm=FALSE in a
heatmap. More elaborately, when symm=FALSE, what does the heatmap plots because
it seems like it changes the scale and makes it asymmetric, even if x is
symmetric and square.
Additionally, is it possible to
Hi, have a look at save() and load().
You can save part of your workspace to a file (save()) and load it from this
file (load()). Of course the file format is R specific (but its specifications
are free) You may easily share the file with other R users.
Olivier.
--
Olivier Crouzet
LLING -
Hi,
I generally prefer using the functions saveObject() and loadObject()
from the R.utils package. I like that you load directly to an object in
the R workspace.
HTH,
Ivan
--
Ivan Calandra, ATER
University of Reims Champagne-Ardenne
GEGENAA - EA 3795
CREA - 2 esplanade Roland Garros
51100
On 2015-02-05 Martin Maechler wrote:
[...]
Both a definition of the DFT (in LaTeX or directly as \deqn{}{}) which
matches *our* fft(), and an extended commented example (ca 20 lines,
rather than ca 100 lines!) would be welcome additions.
[...]
Here is a previous attempt:
Dear all,I have a function that returns the following list. At the end I will
call my function 1000 times and I want to keep for each of these 1000 results
(the structure as given below)in an order to be accessible later (Load the 1000
results and access them within a for loop for example)
How
Gracias por los comentarios Fran.
El tema era porque si no estratificaba por país sino que consideraba la
interacción con movilidad no se me cumplían las hipótesis de hazard
proportionals al estratificar por Q6 pero no por país.
Me sale que hay diferentes hazards basales por país y por Q6,
On Feb 5, 2015, at 10:03 AM, Alexandra Catena wrote:
Thank you guys for the response.
I'm trying to download the last ten years of meteorology data from a
weather station in Livermore from the URL:
ftp://ftp.ncdc.noaa.gov/pub/data/noaa/2015/724927-23285-2015.gz
The Livermore station code
Many thanks Z and Nikolaus! Much appreciated! Have a great weekend!
Kind regards,
Shanley
-Original Message-
From: Achim Zeileis [mailto:achim.zeil...@uibk.ac.at]
Sent: Thursday, 5 February 2015 8:01 PM
To: Shanley Chong
Cc: r-help@r-project.org; nikolaus.uml...@uibk.ac.at
Subject: Re:
I'm trying to read some mainframe data encoded as EBCDIC into R, and am at
a loss. I'd like to avoid using an external program to convert the files,
since I'm operating in a corporate environment.
You can find the example files at at the link below, with both ASCII and
EBCDIC versions. Note that
Dear aal,
Is there a way to rotate array or a cube of matrices by Y axis?
MatLab example:
A = cat(3,{'a' 'b' 'c';'d' 'e' 'f';'g' 'h' 'i'},{'j' 'k' 'l';'m' 'n'
'o';'p' 'q' 'r'})
A(:,:,1) =
'a''b''c'
'd''e''f'
'g''h''i'
A(:,:,2) =
'j''k''l'
Hi Kathryn,
Try this at the end of your example:
plot(y3,type=n,axes=FALSE,xlab=,ylab=)
legend(35,1,c(y1,y2,y3),pch=1:3)
Jim
On Thu, Feb 5, 2015 at 6:42 PM, Kathryn Lord kathryn.lord2...@gmail.com wrote:
Dear R users,
I have three plots, so I tried, for exmple,
par(mfrow=c(2,2))
y1 -
Shanley,
thanks for the example.
Thank you for your help.
Here is my R codes:
data(MunichBnd)
N - length(MunichBnd); n - N*5
dat - data.frame(x1 = runif(n, -3, 3),id = as.factor(rep(names(MunichBnd),
length.out = n)))
dat$sp - with(dat, sort(runif(N, -2, 2), decreasing = TRUE)[id])
Thank you guys for the response.
I'm trying to download the last ten years of meteorology data from a
weather station in Livermore from the URL:
ftp://ftp.ncdc.noaa.gov/pub/data/noaa/2015/724927-23285-2015.gz
The Livermore station code is 724927-23285. If I wanted to download data
from 2005, the
?aperm
aperm(A, c(2,1,3) )[,3:1,]
---
Jeff NewmillerThe . . Go Live...
DCN:jdnew...@dcn.davis.ca.usBasics: ##.#. ##.#. Live Go...
Hello,
Try the following.
rot90 - function(x, n = 1){
r90 - function(x){
y - matrix(rep(NA, prod(dim(x))), nrow = nrow(x))
for(i in seq_len(nrow(x))) y[, i] - rev(x[i, ])
y
}
for(i in seq_len(n)) x - r90(x)
x
}
Thanks Jeff and Rui.
On Thu, Feb 5, 2015 at 11:12 PM, Rui Barradas ruipbarra...@sapo.pt wrote:
Hello,
Try the following.
rot90 - function(x, n = 1){
r90 - function(x){
y - matrix(rep(NA, prod(dim(x))), nrow = nrow(x))
for(i in seq_len(nrow(x)))
First off, thank you very much for taking a look at this. I didn't know
raw=TRUE would be necessary here.
Unfortunately, I'm stuck with the embedded nulls in the source data at this
point. If worst comes to worst, does R have a way to do something like --
1. Read the entire file in as raw
On Thu, Feb 5, 2015 at 2:08 PM, Brian Trautman btrautma...@gmail.com
wrote:
I'm trying to read some mainframe data encoded as EBCDIC into R, and am at
a loss. I'd like to avoid using an external program to convert the files,
since I'm operating in a corporate environment.
You can find the
Hi,
Here is an implementation.
rot90
function(a,times=1)
{
row - dim(a)[1]
col - dim(a)[2]
dep - dim(a)[3]
if (times %% 2 == 1){t - row; row - col; col - t}
tempA - array(NA, c(row,col,dep))
for (i in 1:dep)
{
temp - a[,,i]
for (j in 1:times)
{
temp -
You want to take a look at rvest:
https://github.com/hadley/rvest
On Thu, Feb 5, 2015 at 2:36 PM, Madhuri Maddipatla
madhuri@gmail.com wrote:
Dear R experts,
My requirement for web scraping in R goes like this.
*Step 1* - All the medical condition from from A-Z are listed in the link
Dear R experts,
My requirement for web scraping in R goes like this.
*Step 1* - All the medical condition from from A-Z are listed in the link
below.
http://www.webmd.com/drugs/index-drugs.aspx?show=conditions
Choose the first condition say Acid Reflux(GERD-...)
*Step 2 *- It lands on the
I can create both correlated series and autocorrelated time series with
well defined correlation factors. I am however having trouble creating two
series given fixed autocorrelation for some number of lags in the series
(autocorrelation might differ between the two as well), that also has a
Very sorry that I ignore the question type.Yest,it's not an R question.
Many thanks for your answer.
--
QQ: 1733768559
At 2015-02-05 18:26:01,peter dalgaard pda...@gmail.com wrote:
On 05 Feb 2015, at 09:20 , meng laomen...@163.com wrote:
Hi all:
If I want to test whether the mean
Hiroyuki Kawakatsu hkawa...@gmail.com
on Thu, 5 Feb 2015 12:40:28 + writes:
On 2015-02-05 Martin Maechler wrote:
[...]
Both a definition of the DFT (in LaTeX or directly as \deqn{}{}) which
matches *our* fft(), and an extended commented example (ca 20 lines,
Dear expeRt,
I am using recosystem package which is an wrapper of the LIBMF library, it
implements matrix factorize which needed in latent factor model, but the
package only provides the predict method, not include matrix P,Q which
estimated. I just need the P and Q matrix, so ,if anyone
lapply(1:2, function(x) t(A[rev(1:3),,x]))
[[1]]
[,1] [,2] [,3]
[1,] g d a
[2,] h e b
[3,] i f c
[[2]]
[,1] [,2] [,3]
[1,] p m j
[2,] q n k
[3,] r o l
Is this what you are looking for? I hope this helps.
Chel Hee Lee
On 02/05/2015 03:17 PM, Karim Mezhoud wrote:
Dear
Hi all:
If I want to test whether the mean of a set of normal distributed data is
different from a value(e.g. 0), I can use one sample t test . But if the data
is not normal distributed,what kind of method should be used?
Many thanks!
My best.
[[alternative HTML version
Hi,
I am completely new to R. I have a dataset of several thousand, weekly
observations with ten variables. I would like to create a program (algorithm)
that does a rolling window VAR regression of window width w (for example, a
window width of 200 weeks) for all of the variables within the
On 05 Feb 2015, at 09:20 , meng laomen...@163.com wrote:
Hi all:
If I want to test whether the mean of a set of normal distributed data is
different from a value(e.g. 0), I can use one sample t test . But if the data
is not normal distributed,what kind of method should be used?
Not
On 05/02/2015 09:30, Pascal Oettli wrote:
Hello,
This page says that RHive is not available as Windows binaries:
http://cran.r-project.org/web/packages/RHive/index.html
and
OS_type:unix
explains why it cannot even be installed from the sources.
Regards,
Pascal
On Thu, Feb 5,
John M. Chambers Statistical Software Award - 2015
Statistical Computing Section
American Statistical Association
The Statistical Computing Section of the American Statistical Association
announces the competition for the John M. Chambers Statistical Software Award.
In 1998 the Association
hi,
I've some C++ code which try to load R.dll and execute some R command, then
unload R.dll, yet it seems fail to unload it, so second time to call the
function hangs since it is trying to Initialize R again(this is not allowed as
documented). Anyone can tell me why, thanks.
//the
Hello,
This page says that RHive is not available as Windows binaries:
http://cran.r-project.org/web/packages/RHive/index.html
Regards,
Pascal
On Thu, Feb 5, 2015 at 3:35 PM, deepu praka...@hcl.com wrote:
Hi,
I am facing problem in RHive installation in Rstudio Version 0.98.1091 for R
In addition to following Jim's suggestion, you should probably also use
full.names = TRUE, otherwise you will try to open a connection to files
in your current directory, not in tmpdir.
Another thing is that the unzipped files appear irregular with respect
to columns, so read.table might not
Me corrijo a mi mismo: Si puede tener sentido sentido estratificar por
la variable País, si no tenemos interés en estimar el efecto de
especifico asociado al país, si no en su iteración con otra variable de
exposición. Para aclararme las ideas he construido unos datos ficticios
sobre los que poder
Hi,
I am facing problem in RHive installation in Rstudio Version 0.98.1091 for R
version 3.1.2 on Windows machine.
Warning message :
install.packages(RHive)
Warning in install.packages :
package ‘RHive’ is not available (for R version 3.1.2)
Please help me its urgent
Thanks
Deepika
--
try taking the quotes off of 'files'
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
On Wed, Feb 4, 2015 at 5:24 PM, Alexandra Catena amc5...@gmail.com wrote:
Hi All,
I need to loop through and download
In total I found 8 different way to calculate quantile in very a large
data.table. I share below their performances for future reference. Tests 1, 7
and 8 were the fastest I found.
Best,
Camilo
library(data.table)
v - data.table(x=runif(1),x2 = runif(1),
Not sure if there is a question in here somewhere?
But if I can point out an observation: if you are doing summary
calculations across the rows like this, my guess is that using a
data.table (data.frame) structure for that will really bite you,
because this operation on a data.table/data.frame is
Dunno. Try posting your current code that fixes the previously mentioned
problems, but this time use plain text so the HTML doesn't corrupt it.
Usually you can solve this kind of issue by executing one line at a time and
looking at each result to make sure it is what you think it is. You can
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