Displaying 20 results from an estimated 10000 matches similar to: "R CMD check"
2001 Nov 29
1
R CMD check
[Sent to R-help by mistake. Sorry]
I have been checking my package coda with the current R-devel
using "R CMD check". As usual, this has uncovered a large number
of errors and inconsistencies in my documentation, for which I
am very grateful.
The only problem I have is with code/documentation mismatches when I
have written a method for a generic function, e.g.
* checking for
2011 Jan 19
2
MCMC object indexing
I have an mcmc object and I''m trying to plot the quantiles of the variables - and not as a function of the iterations as in cumuplot.
I cannot seem to find the right combination of indexing to access the variables; after which I''m sure I can plot all the statistics I could hope for.
Any hints for accessing the mcmc object would be appreciated.
=Dave
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2000 Apr 17
3
Maths in R documentation (PR#523)
The document R-exts contains the following example of using
mathematics in R documentation.
\deqn{p(x) = {\lambda^x\ \frac{e^{-\lambda}}{x!}}
{p(x) = lambda^x exp(-lambda)/x!}
There is a syntax error in there, but that's not my point.
The problem is that using "R CMD Rd2dvi" I find that putting
the alternate forms of the equation on top of each other doesn't
work.
2005 Aug 26
3
Matrix oriented computing
Hi,
I want to compute the quantiles of Chi^2 distributions with different
degrees of freedom like
x<-cbind(0.005, 0.010, 0.025, 0.05, 0.1, 0.5, 0.9, 0.95, 0.975, 0.99, 0.995)
df<-rbind(1:100)
m<-qchisq(x,df)
and hoped to get back a length(df) times length(x) matrix with the
quantiles. Since this does not work, I use
x<-c(0.005, 0.010, 0.025, 0.05, 0.1, 0.5, 0.9, 0.95, 0.975,
2007 Feb 05
3
Confidence intervals of quantiles
Can anyone please tell me if there is a function to calculate confidence
intervals for the results of the quantile function.
Some of my data is normally distributed but some is also a squewed
distribution or a capped normal distribution. Some of the data sets contain
about 700 values whereas others are smaller with about 100-150 values, so I
would like to see how the confidence intervals change
2005 Sep 27
1
About Coda Package
Dear R users:
I am using the package coda (the last verison in CRAN) to analyse the output from a MCMC Bayesian analysis. And I get unconsitented results. I have export the chain using the read.table function and after I have transformed this data frame to an mcmc object using the mcmc function. I am interested in three variables, when I use the function effectiveSize I have these figures:
2004 Feb 12
1
How do you create a "MCMC" object?
I have been running a Gibbs Sampler to estimate levels of efficiency in the
Louisiana Shrimp Industry. I created a matrix (samp) where I stored the
results of each iteration for 86 variables. I run 10,000 iterations. So, the
matrix samp is 10,000 x 86. I want to use the gelman-rubin test to check for
convergence. To do that, I need at least two chains. If I run second chain
with different starting
2006 Aug 08
1
fixed effects following lmer and mcmcsamp - which to present?
Dear all,
I am running a mixed model using lmer. In order to obtain CI of
individual coefficients I use mcmcsamp. However, I need advice which
values that are most appropriate to present in result section of a
paper. I have not used mixed models and lmer so much before so my
question is probably very naive. However, to avoid to much problems with
journal editors and referees addicted to
2016 Jul 06
2
Formato numérico
Hola.
Tengo un problema con el formato de salida de un objeto "numeric", que los
expresa en formato científico o exponencial.
> range(total$ImpTotal)
[1] 5.66 806907887.10
> Valores <- quantile(total$ImpTotal, c(0, 0.01, 0.02, 0.025, 0.03, 0.05,
0.1, 0.25, 0.5, 0.75, 0.9, 0.95, 0.96, 0.97, 0.975, 0.98, 0.99), na.rm=TRUE)
> class(Valores)
[1] "numeric"
>
2011 Feb 06
1
boot() versus loop, and statistics option
Hello R users
I am quite new to bootstrapping. Now, having some data x,
----
R: set.seed(1234)
R: x <- runif(300)
----
I want to bootstrap simple statistics, mean and quantiles (.025,
.975). Currently, I run a loop
----
R: res <- as.data.frame(matrix(ncol = 3, dimnames = list(NULL,
... c("M", "Lo", "Hi"))))
R: for (i in 1:100) {
... y <-
2004 Sep 15
3
getting started on Bayesian analysis
I am an economist who decided it's high time that I learned some
Bayesian statistics. I am following An Introduction to Modern
Bayesian Econometrics by T. Lancaster.
The book recommends using BUGS, but I wonder if there are any
alternatives which are free software and fully integrated to R (which
I have been using for more than two years for numerical computations.)
I would like to learn
2013 Mar 28
3
problem with plots with short example.
i am having problem running my own data. yesterday it was working just fine. today it is not. this is the code i was using as an example to follow. this code ALSO worked just fine yesterday, and is no longer working at all. i suspect it is a problem with either my computer or the software, at this point. if THIS won't even run.... something is wrong.
i can assure you this isn't
2003 Jun 11
1
qwilcox
The function 'wilcox.test' in R and S gives (almost) identical results (see
below). 'qwilcox' however, does not:
> qwilcox(p,5,5)
p: 0.025 0.975
--------------------
R> 3 22
S> 18 37
I originally wanted to ask a questions, but then I found the answer. Given
the confusion I run into, I wonder if this experience is worth reporting.
The
2005 Jan 25
1
CODA vs. BOA discrepancy
Dear List:
the CODA and BOA packages for the analysis of MCMC output yield different
results on two dignostic test of convergence: 1) Geweke's convergence
diagnostic; 2) Heidelberger and Welch's convergence diagnostic. Does that
imply that the CODA and BOA packages implement different ``flavors'' of
the same test?
I paste below an example.
Geweke's test
2010 Apr 11
1
MCMC results into LaTeX
Dear All,
What is the preferred way to get Bayesian analysis results (such as
those from MCMCpacki, MCMCglmm, and DPpackage) into LaTeX table
automatically? I have been using the "apsrtable" package and similar
functions in "memisc" package, but neither seems to handle MCMC output
directly. Many thanks.
Shige
2011 Feb 24
2
MCMCpack combining chains
Deal all, as MCMClogit does not allow for the specification of several chains, I have run my model 3 times with different random number seeds and differently dispersed multivariate normal priors.
For example:
res1 = MCMClogit(y~x,b0=0,B0=0.001,data=mydat, burnin=500, mcmc=5500, seed=1234, thin=5)
res2 = MCMClogit(y~x,b0=1,B0=0.01,data=mydat, burnin=500, mcmc=5500, seed=5678, thin=5)
res3 =
2000 Mar 16
3
MCMC
Hi
Does anyone know of any R coding/functions for MCMC approaches? I am
currently using BUGS but I wonder if the bazaar has produced anything? I
think I am pushing BUGS to it's limit and possibly past it at the moment.
John
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2006 Jun 23
1
command line boa problems...
Greetings -
For a number of reasons, I'm moving from CODA to BOA - and I have one or
two really basic, boa-newbie questions. While I have the 'menu-driven'
version of boa working fine (most recent version, running under R 2.3.1
on a Windows machine), for the life of me I can't seem to get some basic
boa.xxxx command-line functions to work at all. Even things like
2010 Apr 21
1
A question about plot.mcmc
Dear List members,
I am using R to generate MCMC time series plots.
This is the code I use; however, everytime an error message will come out
saying could not find function "plot.mcmc."
I have coda package and Lattice package installed.
Does anyone know what may get wrong here? Thanks so much for your
suggestions.
Hongli Li
*library (coda)
dat1=read.csv("Itemtime.csv")
2005 Oct 28
1
MCMC in R
Dear R-helpers,
Hi! All.
I'm doing a project which needs MCMC simulation.
I wonder whether there exists related packages in R.
The only one I know is a MCMCpack package.
What I want to do is implementing gibbs sampling and
Metropolis-Hastings Algorithm to get the posterior
of hierarchical bayesian models.
Thanks in advance.
Jun