Displaying 20 results from an estimated 2000 matches similar to: "MLE for censored distributions in R"
2007 Jul 11
1
CDF for pareto distribution
Hi, I would like to use the following codes to plot the CDF for pareto
distribution. Before doing this, I have plot the emperical one.
x <- seq(1.6, 3, 0.1)
lines(x,pgpd(x, 1.544,0.4477557,), col="red")
Could anyone give me some advice whether the above codes are correct?
Many thanks.
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2008 Jul 23
5
Histogram
Hi,
how can I treat data organised in classes and frequencies?
Ex.
class frequency
20-23 9
23-25 7
26-28 5
29-31 5
32-34 3
Thanks
Angelo Scozzarella
2007 Mar 13
2
An example of "overloading" [
Hello:
Could anyone point me to a nice example where someone has created methods
for "[" on a user defined Class?
I looked at the package Matrix but that was a little daunting. I'm looking
for someone a little more introductory. I've tried to search the help
section and the web but its difficult since "[" isn't searchable.
Thanks in advance!
Greg
[[alternative
2008 Feb 14
1
Small encoding question
Dear developeRs,
Compilation of the latest version (0.9-5) of my actuar package fails
with r-release MacOS_X ix86 on CRAN; see
http://www.R-project.org/nosvn/R.check/r-release-macosx-ix86/actuar-00check.html
All errors come from accented letters in comments in latin-1 encoded
files (except hierarc.R which is in UTF-8, my bad). Encoding is
declared as latin-1 in DESCRIPTION.
The package
2003 Sep 30
3
fitdistr, mle's and gamma distribution
Dear R Users,
I am trying to obtain a best-fit analytic distribution for a dataset
with 11535459 entries. The data range in value from 1 to 300000000. I
use: fitdistr(data, "gamma") to obtain mle's for the parameters.
I get the following error:
Error in optim(start, mylogfn, x = x, hessian = TRUE, ...) :
non-finite finite-difference value [1]
And the following warnings:
2006 Jun 12
2
Fitting Distributions Directly From a Histogram
Dear All,
A simple question: packages like fitdistr should be ideal to analyze
samples of data taken from a univariate distribution, but what if
rather than the raw data of the observations you are given directly
and only a histogram?
I was thinking about generating artificially a set of data
corresponding to the counts binned in the histogram, but this sounds
too cumbersome.
Another question is
2010 May 31
1
Suggested tidying up
Package grDevices has a function cm() to convert from inches to centimeters. Its definition is:
cm <- function(x) 2.54*x
As far as I can tell, the function is not used anywhere in the R sources (I grepped for "cm(", "cm)" and ", cm".) I did not check for all packages on CRAN, though.
May I propose to remove this apparently useless function from the sources?
[I
2009 Jan 23
4
Histogram for grouped data in R
I have grouped data in this format
Size -- Count
0-10 -- 15
10-20 -- 25
20-50 -- 10
50-100 -- 5
I've been trying to find a way to set this up with the proper histogram
heights, but can't seem to figure it out. So any help would be much
appreciated!
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Sent from the R help
2008 Jul 14
2
Insurance review statistical methods
Hi R users:
I will like to know if somebody works on insurance statistics
(actuarial problems) and had use TRICAST, and can tell me
if with all the R tools it can be build a solution
like TRICAST or similar.
In a word:
Do you think that R has all the statistical tools
(I mean modeling tools) to make a job similar to TRICAST?
Does TRICAST has modeling tools that are not implemented
on R yet?
2003 Aug 28
2
ks.test()
Dear All
I am trying to replicate a numerical application (not computed on R) from an
article. Using, ks.test() I computed the exact D value shown in the article
but the p-values I obtain are quite different from the one shown in the
article.
The tests are performed on a sample of 37 values (please see "[0] DATA"
below) for truncated Exponential, Pareto and truncated LogNormal
2005 Aug 29
5
Testing if all elements are equal in a vector/matrix
Is there a canonical way to check if all elements of a vector or matrix are
the same? Solutions below work, but look hackish to me.
> x <- rep(1, 10)
> all(x == x[1]) # == operator does not provide for small differences
[1] TRUE
> isTRUE(all.equal(x, rep(x[1], length(x)))) # ugly
[1] TRUE
Best,
Vincent
--
Vincent Goulet, Associate Professor
??cole d'actuariat
2005 Mar 18
2
How to create a 'fit' plot
Dear List,
As someone who is in the process of trying to migrate
from Excel, I'd appreciate any help on this question:
I have a data set and want to fit, say, three
distributions to it. I would like to create a plot
that shows my data points against all three fitted
curves (estimated d.f.). Basically, I lookint to
creat a plot that looks like the one presented in the
attached paper (Figure
2005 Apr 20
1
Negative argument for head() and tail()
Dear R developers,
I'm a former APL programmer. In that language, the "take" (up arrow) and
"drop" (down arrow) operators were extensively used to, well, take and drop
elements of vectors. Functions head() and tail() are equivalents in R for the
"take" operator, but nothing seems to mimic the "drop" operator. I think it
would be useful.
For
2005 Jun 08
1
Fitting Theoretical Distributions to Daily Rainfall Data
Dear List Members,
I need a bit help about fitting some theoretical
distributions (such as geometric, exponential,
lognormal or weibull distribution) to the following
*dry spell*, *wet spell*, *cycles (Wet-Dry or
Dry-Wet)* from my meteorological (daily rainfall) data
http://www.angelfire.com/ab5/get5/R.rainfall.txt only
for rainy seasen (july - september) of 14 years only:
2006 Jan 31
2
Announce: Contributed Documentation
[Version fran??aise plus bas]
To the R community,
A quick word to announce the publication of my document "Introduction
?? la programmation en S". It is available in the French section of the
Contributed Documentation page of CRAN.
Many of the documents or books currently available on S-Plus and/or R
present the software in a statistical analysis context. My document
rather focuses
2005 Feb 23
3
and [ESS] Starting ESS
Dear R People:
I have finally seen the error of my ways and have decided to use ESS for R
and S + stuff.
However, I have a question right from the beginning. I'm somewhat confused
by the installation instructions.
Do I install XEMACS or ESS first, please?
Windows XP
R Version 2.0.1
(S + 6.2)
Thanks so much!
Sincerely,
Laura Holt
mailto: lauraholt_983 at hotmail.com
2006 Sep 27
1
S3 methods for cbind/rbind
I created a type of object similar to a data frame. In some circumstances, It
needs special methods for "[" and "[<-" and rbind() (but not cbind()). Then I
found this in the cbind()/rbind() man page:
The method dispatching is _not_ done via 'UseMethod()', but by
C-internal dispatching. Therefore, there is no need for, e.g.,
'rbind.default'.
2006 Sep 17
2
Building the call of an arbitrary function
Hy all,
Is there a direct way to build the complete function call of an arbitrary
function?
Here's what I want to do. A function will build a function which will itself
call a probability density function for some law given in argument to the
first function:
> f("gamma", 1000)
will return, say,
function(x, shape, rate, scale = 1/rate)
dgamma(x + 1000, shape, rate,
2007 Dec 18
2
bug in r-base (PR#10521)
Full_Name: marco zamboni
Version: no R version
OS: ubuntu gusty
Submission from: (NULL) (87.9.174.188)
I have just finish to install gusty ubuntu on my AMD sempron.
I would like to:
$ sudo apt-get install r-base
but
...
I seguenti pacchetti hanno dipendenze non soddisfatte:
r-base: Dipende: r-base-core (>= 2.6.1-1gutsy0) ma 2.5.1-1 sta per essere
installato
Dipende:
2007 Dec 18
2
bug in r-base (PR#10521)
Full_Name: marco zamboni
Version: no R version
OS: ubuntu gusty
Submission from: (NULL) (87.9.174.188)
I have just finish to install gusty ubuntu on my AMD sempron.
I would like to:
$ sudo apt-get install r-base
but
...
I seguenti pacchetti hanno dipendenze non soddisfatte:
r-base: Dipende: r-base-core (>= 2.6.1-1gutsy0) ma 2.5.1-1 sta per essere
installato
Dipende: