similar to: Request for help

Displaying 20 results from an estimated 1000 matches similar to: "Request for help"

2005 Jan 27
0
Request for help (reference details)
I referred in my reply to a paper by Diaconis and Sturmfels. The exact reference is: Diaconis and Sturmfels, Algebraic algorithms for sampling from conditional distributions, Ann. Stat 26 (1998) 363-397. They cite the following: Besag and Clifford, Generalized Monte Carlo significance tests, Biometrika 76 (1989) 633-42. which actually contains your problem (section 3, Testing the Rasch model)
2017 May 24
2
samba 4 in AD 2008R2 without winbind
----- Messaggio originale ----- > Da: "Rowland Penny" <rpenny at samba.org> > A: samba at lists.samba.org > Cc: "Daniele Bernazzi" <daniele at ao-siena.toscana.it> > Inviato: Mercoledì, 24 maggio 2017 13:12:07 > Oggetto: Re: [Samba] samba 4 in AD 2008R2 without winbind > > On Wed, 24 May 2017 12:54:48 +0200 (CEST) > Daniele Bernazzi
2017 May 24
4
samba 4 in AD 2008R2 without winbind
> Da: "Rowland Penny" <rpenny at samba.org> > A: samba at lists.samba.org > Cc: "Daniele Bernazzi" <daniele at ao-siena.toscana.it> > Inviato: Mercoledì, 24 maggio 2017 12:45:56 > Oggetto: Re: [Samba] samba 4 in AD 2008R2 without winbind > > On Wed, 24 May 2017 12:08:09 +0200 (CEST) > Daniele Bernazzi <daniele at ao-siena.toscana.it>
2005 Dec 20
1
x axis
Hello, I write to know how can I modify the x axis : when I plot a survival object, R plots a graph with x values = 0, 10, 20, 30 while I want a graph with values 0, 6, 12, 18, 24 in the x axis. How can I do this? In R 2.1.1 version there was "time.inc" in survplot, but in version R 2.2.0 there isn't it! I am sorry for my english and I hope that you understand my problem. Thank you
2006 Apr 04
2
EM algorithm
Dear R-Users, I have a model with a latent variable for a spatio-temporal process. I would like to use EM algorithm to estimate the parameters. Does anybody know how to implement the algorithm in R? Thank you very much in advance, Michela
2011 Nov 21
2
errors with lme4
Dear list, i'm a new R user, so I apologize if the topic is already being addressed by some other user. I'm trying to determine if the reproductive success of a species of bird is related to a list of covariates. These are the covariates: ? elev: elevation of nest (meters) ? seadist: distance from the sea (meters) ? meanterranova: records of temperature ? minpengS1: records
2009 Nov 18
1
foor loop - undefined columns selected error
Dear R-Help Members, I am trying to read and analyse a set of 100 csv files. I need work only on some columns in each of those, so I decided to use a for loop, isolate the column in each file to work on, but then an error mesage appear: "undefined columns selected" Here is my code: setwd("F:/Data/") a<-list.files() for (x in a) { ? u<-read.csv(x, header=T,
2006 Oct 13
3
Rmpi performance
Dear R users, we are trying to do some parallel computing using library(snow). In particular we have a cluster with 3 nodes >cl <- makeCluster(3, type = "MPI") 3 slaves are spawned successfully. 0 failed. and we want to compute the function op_mat (see below) first with the master and then with the cluster using system.time for checking the computational performance.
2008 Oct 01
1
Simon Wood GAMsetup
Dear Simon, Thank you for your quick reply! I used to perform the GAMsetup in the following manner: GAMsetup sintax: x.summer: vector used for construct the spline knots<-14 N<-length(x.summer) x<-array(x.summer,dim=c(1,N)) G<-list(m=1,n=N,nsdf=0,df=knots+1,dim=1,s.type=0,by=0,by.exists=FALSE,p.order=0,x=x,n.knots=knots,fit.method="mgcv") H<-GAMsetup(G) with the
2006 Jun 04
1
How to use lmer function and multicomp package?
Dear list members, First of all thank you for your helpful advices. After your answeres to my firt mail I studied a lot (R-News n?5) and I tried to perform my analysis: First, to fit a GLM with a nested design I decided to use the function "lmer" in package "lme4" as suggested by Spencer Graves and Filippo Piro. I remember to you that my data were: land use classes, 3 levels
2006 Nov 23
2
loading libraries on MPI cluster
Dear R-users, we are using library(snow) for computation on a linux cluster with RMPI. We have a problem with clusterEvalQ: after launching clusterEvalQ it seems loading the required library on each node but if we type a function belonging to the loaded package R doesn't find it. > library(snow) # making cluster with 3 nodes > cl <- makeCluster(3, type = "MPI") Loading
2007 Mar 19
1
data.frame handling
Dear R-users, I have a little problem that I can't solve by myself. I have a data frame with 2 factors and 8 observations (see the following code): y <- c(1,1,1,2,2,3,3,3) y <- factor(y) levels(y) <- c("a","b","c") x <- c(1,2,3,1,2,1,2,3) x <- factor(x) levels(x) <- c("x","y","z") X <-
2011 Feb 14
1
How to group data by day
Hi everybody, I'm a beginner in R and I'm having a hard time grouping my data by day. The data are in this format: id; words 2005-07-07T09:59:56Z; 35 2005-07-07T10:01:39Z; 13 2005-07-08T10:02:22Z; 1 2005-07-09T10:03:16Z; 23 2005-07-10T10:04:23Z; 39 2005-07-10T10:04:39Z; 15 I've transformed the date strings in dates with the function: london$id <- transform(london$id,
2008 Jul 21
2
avoid loop with three-dimensional array
Dear R user, I'm trying to find a solution for optimizing my code. I have to run a 50.000 iteration long simulation and it is absolutely necessary to have an optimized code. I have to do this operation *sum_t ( t(X_t) %*% A %*% X_t )* where X_t is a (d*k) matrix which changes in time and A is a constant in time (d*d) matrix. I have put all my X_t in a three dimensional array X of dimension
2006 Jun 27
2
Survival
? stato filtrato un testo allegato il cui set di caratteri non era indicato... Nome: non disponibile Url: https://stat.ethz.ch/pipermail/r-help/attachments/20060627/84d9bd54/attachment.pl
2016 Nov 30
2
Asterisk 14.2 CLI don't show debug/verbose data
Hi all, after upgrading from 13.7 to 14.2, asterisk cli (asterisk -r) don't show what's happens. I've trying setting debug and verbose to 100 but nothing, no show. All commands works as expected but i can't what's happens on my asterisk server. asterisk*CLI> core show settings PBX Core settings ----------------- Version: 14.2.0 Build Options:
2019 Sep 11
4
Need to update gcc to version >=6 on CentOS 7 ?
$ sudo yum install devtoolset-7 Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirror.vcu.edu * epel: mirror.siena.edu * extras: mirror.vcu.edu * updates: mirror.vcu.edu No package devtoolset-7 available. Error: Nothing to do On Wed, Sep 11, 2019 at 12:17 PM Gordon Messmer <gordon.messmer at gmail.com> wrote: > > On 9/11/19 9:05 AM,
2006 Jun 15
1
SSPIR problem
Dear R-Users, I'm using SSPIR package for a spatio-temporal application. Is it possible to modify the structure of the involved matrixes (Fmat, Gmat, Vmat,Wmat)? I want to create a model like this #y(t)=k*theta(t)+epsilon(t) #theta(t)=h*theta(t-1)+eta(t) #epsilon(t) N(0,V) V=sigma2*I #eta(t) N(0,W) W=sigma2_eta where the state variable theta has dimension 1(p=1) and at
2009 Jul 01
1
RScaLAPACK package with OpenMPI
Hi all, I'm using RScalapack library for parallelizing some heavy matrix operations required by MCMC methods for spatio-temporal models. The package reference manuals (dated 2005) states that the library needs LamMPI to work but we have a Linux Cluster with OpenMPI. We have found (http://cvs.fedoraproject.org/viewvc/devel/R-RScaLAPACK/) a patch for OpenMPI but we are wondering if in the
2011 Sep 14
1
Building R package with precompiled shared library
Dear R users, we are trying to build a R package that includes a precompiled shared library, let's say mylib.so. We created the skeleton of the package and we moved the mylib.so file into the libs folder that we created at the same level of the folders man and R. Moreover we created the file NAMESPACE and we added the line useDynLib(mylib, .registration=TRUE). The building step seems to work