Displaying 20 results from an estimated 1000 matches similar to: "Quantile function for the generalized beta distribution of the 2nd kind"
2005 Jan 05
3
strange behaviour of negative binomial
Dear list,
I ran into a strange behaviour of the pnbinom function - or maybe I
just made a stupid mistake.
First thing is that pnbinom seems to be very slow. The other - more
interesting one - is that I get two different curves when I plot the
estimated density and the density given by pnbinom. Shouldn't it be the
same?
This is only the case, I think, if I use the parameter size = 1. I
2017 Mar 13
2
modbus driver for phoenix contact industrial UPS
Hello,
this is to let you know I will start working on a modbus driver for the
PhoenixContact QUINT-UPS industrial DC UPS, model 2320461.
https://www.phoenixcontact.com/online/portal/us?uri=pxc-oc-itemdetail:pid=2320461&library=usen&pcck=P-22-07-01-01&tab=1
I will reuse some parts of the nutdrv-modbus branch, but this will be a
model specific driver, not a generic one. Unfortunately
2006 Mar 30
1
warning message in hand-made function
Dear Rusers,
I tried to implement a function comparing mean scores between one
subject (the patient) and a group a control subjects. The function
returns attended results, but I also obtained the following warning :
Warning message:
the condition has length > 1 and only the first element will be used
in: if (substr(fp, 1, 1) == "<") fp else paste("=", fp)
Maybe
2007 Aug 01
1
Re : Custom axis
Maybe I do not explain well what I would like to do. I do not want to change the labels of the axis, but the scale. What I want is a general procedure for changing the scale. Its like using a logarithmic scale on a plot. Labels are the same, but the increases of x along the x-axis are defined by a known monotone and continuous function.
Florent Bresson
----- Message d'origine ----
De :
2005 Apr 25
6
Proba( Ut+2=1 / ((Ut+1==1) && (Ut==1))) ?
Dear all,
First I apologize if my question is quite simple,
but i'm very newbie with R.
I have vectors of the form v = c(1,1,-1,-1,-1,1,1,1,1,-1,1)
(longer than this one of course).
The elements are only +1 or -1.
I would like to calculate :
- the frequencies of -1 occurences after 2 consecutives -1
- the frequencies of +1 occurences after 2 consecutives +1
It looks probably something like
2005 Oct 11
2
Problems with plot function
Hello all R users,
My simulation function works correctly, but I have problems with plot
function. You will find the following code using it.
Thank you for your help
##################################################"
simulation <- function(k, n){
conc <- seq(0,10,by=0.5)
#choixg <- seq(1, length(conc))
choixg <- rep(0,length(conc))
for (i in 1:length(conc)){
choixg[i]
2006 Oct 16
5
Re : Generate a random bistochastic matrix
Thanks, I tried someting like this, but computation takes times for large matrices
btransf <- function(y,X=length(y)^4) {
N <- length(y)
bm <- matrix(rep(1/N,N^2),N,N)
for(j in 1:X){
coord <- sample(1:N,4,replace=T)
d <- runif(1,0,min(bm[coord[1],coord[2]],bm[coord[3],coord[4]]))
2005 Oct 13
1
problems with loop and plot function
Hi all R users,
I have problems with my second loop for drawing the three curves in the
same graphic. I need help please
Thank you in advance
#########################################################################
simulation <- function(k, n){
conc <- seq(0,100,by=0.5)
#choixg <- seq(1, length(conc))
choixg <- rep(0,length(conc))
for (i in 1:length(conc)){
choixg[i] <- (k
2013 Nov 08
1
CRAN package 5000
Package 'quint' brought the number of packages on CRAN (for all
platforms: some are Windows-only or non-Windows only) to 5000 a few
minutes ago: see http://cran.r-project.org/web/packages/index.html .
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861
2006 Oct 16
2
Re : Re : Generate a random bistochastic matrix
Yes, you're right. In fact, it's just an adaptation of a matlab command and the author advises using N^4 replications that's why it's the default in the function. The bistochastic matrix is not my subject of interest, but I need it to perform some random tranformation of a vector of incomes.
Florent Bresson
----- Message d'origine ----
De : Richard M. Heiberger <rmh at
2005 Nov 28
3
optimization with inequalities
I have to estimate the following model for several
group of observations :
y(1-y) = p[1]*(x^2-y) + p[2]*y*(x-1) + p[3]*(x-y)
with constraints :
p[1]+p[3] >= 1
p[1]+p[2]+p[3]+1 >= 0
p[3] >= 0
I use the following code :
func <- sum((y(1-y) - p[1]*(x^2-y) + p[2]*y*(x-1) +
p[3]*(x-y))^2)
estim <- optim( c(1,0,0),func, method="L-BFGS-B" ,
lower=c(1-p[3], -p[1]-p[3]-1,
2003 May 16
1
--csum-length ?!
>From the manpage:
--csum-length=LENGTH
By default the primary checksum used in rsync is a very strong
16 byte MD4 checksum. In most cases you will find that a trun-
cated version of this checksum is quite efficient, and this will
decrease the size of the checksum data sent over the link, mak-
ing things faster.
You can choose the
2007 Aug 24
2
Applying a function to an array
Dear R-users,
I would like to apply a function (more precisely sd()) over the third dimension of a three-dimension array. The function apply would be interesting but the chosen function can only be applied on the rows and columns of the array according to the help file. I can use a loop to cut the array in matrices and then use apply for each replication, but it's not very nice. A small
2005 Dec 05
3
The gamma function and infinity
I have to calculate some formula like:
gamma(x)/(gamma(x+y)
and I observed that for relatively big values of x, R
returns infinity and so cannot compute the formula. Is
it possible to force R to give the real value of
gamma(x) instead of Inf ?
thanks
2006 Jul 14
9
DRY Javascript Degredation
Hi,
It seems there must be a better way to do this than what I am
currently doing.
I have a simple app that collects a users thoughts along with their
email address and their first an last name. On a page that lists all
the users thoughts they can click on a link to "add a thought" which
then displays a form with ajax. My current methodology for this is
not very dry. If js is
2006 Oct 16
2
Generate a random bistochastic matrix
Please, I would like to generate a random bistochastic matrix, that is a squared matrix of non-negative numbers with each row and each column sum to 1, for example :
.2 .3 .5
.6 .3 .1
.2 .4 .4
I don't know of to code this. Do you have any idea ?
Thanks
Florent Bresson
___________________________________________________________________________
Demandez ?
2001 Sep 24
1
Printing Central European characters
Dear R-users,
I have problems with printing Central European (CE) characters
(e.g. {\H o} and {\H u}) in graphics made by R.
After executing the following code I can see the CE characters with gv
on my screen, but I cannot print them on a postscript printer.
> postscript(file="proba.ps",enc="ISOLatin2.enc")
> plot(0:15,0:15,type="n")
> grid(15,15,lty=1)
2005 Oct 31
3
Applying a function to a vector
I have defined a function to compute the value of a
beta distribution of the second kind (the existing
beta distribution of th stats package is the beta
distribution of the first kind). It works perfectly
for a single value, but I want to apply it to a vector
of 22 000 values. I can use a loop for the calculation
of each value but it runs very very slowly.
So, what can I change ?
Hers's the
2006 Jul 18
4
Multiple Layouts - Single Controller
How do I do multiple layouts for a single controller:
I am aware I can do... render(:layout =>''mylayout'') for individual
actions, however this becomes a multiple render problem.
I tried this...
layout "mylayout", :except => [:myaction, :myotheraction]
layout "myotherlayout", :only => [:myaction, :myotheraction]
However that doesn''t
2006 Jul 14
5
Ideas for AJAX pagination
Hi,
I am looking for ideas on how to remove the last item from a
paginated page when a new item is inserted, thus leaving only 10
elements on the page.
Currently I have a form that inserts with AJAX, but as expected, each
post added to the page just increases the number of posts leaving 11
on a page that should only be displaying 10.
I have unique ID''s for each post (e.g.