Displaying 20 results from an estimated 1000 matches similar to: "Basic question on function "identical""
2003 Dec 12
1
Basic question on function
One is an integer and the other is not. Try
for (i in 1:5) print( identical( i, as.integer(1) ) )
---
Date: Fri, 12 Dec 2003 14:47:07 -0800
From: John Welsh <jwelsh at skcc.org>
To: 'R-help at lists.R-project.org' <R-help at stat.math.ethz.ch>
Subject: [R] Basic question on function "identical"
> for(i in c(1:5))
+ {
+ print(identical(i,1))
+ }
[1]
2003 Nov 27
2
MASS fitdistr()
Dear R experts,
I am trying to use the R MASS library fitdistr() to fit the following
list:
k21stsList<-c(0.76697,0.57642,0.75938,0.82616,0.93706,0.77377,0.58923,0.37157,0.60796,1.00070,0.97529,0.62858,0.63504,0.68697,0.61714,0.75227,1.16390,0.66702,0.83578)
as follows,
library(MASS)
fitdistr(k21stsList, "normal")
But, I get
Error in fitdistr(k21stsList, "normal") :
2011 Sep 05
1
savePlot with % in character string
This occurred after I installed R x64 2.13.1 on Windows:
savePlot("95%.winners.wmf")
saves the file as:
"951nners.wmf"
Is this the correct behavior, or have I bungled something?
John Welsh, Ph.D.
Associate Professor
Molecular and Cancer Biology
Vaccine Research Institute of San Diego
10835 Road to the Cure
San Diego, CA 92121
Phone: (858) 581-3960 ex.248
Email: jwelsh at
2011 Sep 02
1
Platform of image
Dear R users,
When I Save Workspace... and then reopen it, my platform switches
from 64-bit to 32-bit, i.e. the Gui switches between these:
R version 2.13.1 (2011-07-08)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-pc-mingw32/x64 (64-bit)
R version 2.13.1 (2011-07-08)
Copyright (C) 2011 The R
2016 Mar 04
2
Using 'ForceCommand' Option
Lesley Kimmel <lesley.j.kimmel at gmail.com> writes:
> So I probably shouldn't have said "arbitrary" script. What I really
> want to do is to present a terms of service notice (/etc/issue). But I
> also want to get the user to actually confirm (by typing 'y') that
> they accept. If they try to exit or type anything other than 'y' they
> will be
2016 Feb 17
5
Using 'ForceCommand' Option
Gert,
Thank you for the feedback. Can you give any further direction on where to
get more information on what you are describing?
On Wed, Feb 17, 2016 at 3:17 PM, Gert Doering <gert at greenie.muc.de> wrote:
> Hi,
>
> On Wed, Feb 17, 2016 at 12:59:57PM -0600, Lesley Kimmel wrote:
> > I would like to implement an arbitrary script to be executed when logging
> > on via
2011 Dec 05
0
ANNOUNCEMENT: Call for Proposals for The R Series from Chapman & Hall/CRC
Chapman & Hall/CRC: The R Series
We are delighted to announce that our new series of books on R is up and running, with two books already published and another nine forthcoming (including three set to publish in 2012). We are keen to receive proposals for books covering all aspects of the development and application of R software. If you have an idea for a book, please contact one of the
2003 Jul 25
5
named list 'start' in fitdistr
Hi R lovers!
I'd like to know how to use the parameter 'start' in the function
fitdistr()
obviously I have to provide the initial value of the parameter to optimize
except in the case of a certain set of given distribution
Indeed according to the help file for fitdistr
" For the following named distributions, reasonable starting values
will be computed if `start'
2010 Jan 03
6
Help with function "fitdistr" in "MASS"
Hi, R users:
I want to fit my data into a normal distribution by using the command
"fitdistr" in "MASS".
I changed my data class from "ts" to "numeric" by
>class(mydata)="numeric"
but after using "fitdistr", I got the result below
>fitdistr(mydata,"normal")
mean sd
NA NA
(NA) (NA)
the help doc of
2011 May 03
3
fitting distributions using fitdistr (MASS)
Please guide me through to resolve the error message that I get
this is what i have done.
>x1<- rnorm(100,2,1)
>x1fitbeta<-fitdistr(x1,"beta")
Error in fitdistr(x1, "beta") : 'start' must be a named list
Yes, I do understand that sometime for the distribution to converge to the
given set of data, it requires initial parameters of the distribution, to
2005 Apr 05
1
Fitdistr and likelihood
Hi all,
I'm using the function "fitdistr" (library MASS) to fit a distribution to
given data.
What I have to do further, is getting the log-Likelihood-Value from this
estimation.
Is there any simple possibility to realize it?
Regards, Carsten
2010 Jan 28
4
Problems with fitdistr
Hi,
I want to estimate parameters of weibull distribution. For this, I am using
fitdistr() function in MASS package.But when I give fitdistr(c,"weibull") I
get a Error as follows:-
Error in optim(x = c(4L, 41L, 20L, 6L, 12L, 6L, 7L, 13L, 2L, 8L, 22L,
:
non-finite value supplied by optim
Any help or suggestions are most welcomed
--
View this message in context:
2004 Feb 17
2
problem with fitdistr ?
Hi,
I'm trying fitdistr but I'm getting some errors
> fitdistr(rnorm(100),"Normal")
Error in fitdistr(rnorm(100), "Normal") : 'start' must be a named list
> fitdistr(rnorm(100),"Normal",start=list(mean=0,sd=1))
Error in fitdistr(rnorm(100), "Normal", start = list(mean = 0, sd = 1))
:
supplying pars for the Normal is not
2006 Feb 10
8
Fitdistr and MLE for parameter lambda of Poisson distribution
Hello!
I would like to get MLE for parameter lambda of Poisson distribution. I
can use fitdistr() for this. After looking a bit into the code of this
function I can see that value for lambda and its standard error is
estimated via
estimate <- mean(x)
sds <- sqrt(estimate/n)
Is this MLE? With my poor math/stat knowledge I thought that MLE for
Poisson parameter is (in mixture of LaTeX
2008 Feb 09
2
print.fitdistr buglet
Dear developers,
There's a small bug in print.fitdistr that can cause output to be printed
twice, but only if print is called explicitly:
> fit<-fitdistr(rt(1000,3),"t")
There were 11 warnings (use warnings() to see them)
> fit
m s df
-0.02181723 1.00145296 3.13723878
( 0.03865057) ( 0.03999447) ( 0.33298377)
> print(fit)
2006 Aug 16
3
fitting truncated normal distribution
Hello,
I am a new user of R and found the function dtnorm() in the package msm.
My problem now is, that it is not possible for me to get the mean and sd out of a sample when I want a left-truncated normal distribution starting at "0".
fitdistr(x,dtnorm, start=list(mean=0, sd=1))
returns the error message
"Fehler in "[<-"(`*tmp*`, x >= lower & x <= upper,
2007 Sep 09
1
fitdistr()
I am trying to fit the chi-squared distribution to a set of data using the fitdistr function found in the MASS4 library, the data set is called ONES3, I have loaded it using the command
ONES3<-read.table("ONES3.pdf",header=TRUE,na="NA")
I print out the dataset ONES3 to the screen to make sure it has loaded
Then I try to fit this data using the command
2011 Apr 27
3
MASS fitdistr with plyr or data.table?
I am trying to extract the shape and scale parameters of a wind speed
distribution for different sites. I can do this in a clunky way, but
I was hoping to find a way using data.table or plyr. However, when I
try I am met with the following:
set.seed(144)
weib.dist<-rweibull(10000,shape=3,scale=8)
weib.test<-data.table(cbind(1:10,weib.dist))
2006 Sep 23
1
Fitdistr() versus nls()
Hello R-Users,
I'm new to R so I apologize in advance for any big mistake I might
be doing. I'm trying to fit a set of samples with some probabilistic
curve, and I have an important question to ask; in particular I have
some data, from which I calculate manually the CDF, and then I import
them into R and try to fit: I have the x values (my original samples)
and the y values
2003 Jul 28
1
Optimization failed in fitting mixture 3-parameter Weibull distri bution using fitdistr()
Dear All;
I tried to use fitdistr() in the MASS library to fit a mixture
distribution of the 3-parameter Weibull, but the optimization failed.
Looking at the source code, it seems to indicate the error occurs at
if (res$convergence > 0)
stop("optimization failed").
The procedures I tested are as following:
>w3den <- function(x, a,b,c)