Displaying 20 results from an estimated 500 matches similar to: "Bug in qchisq?"
2002 May 03
2
an info on 3d representation
Dear list,
sorry to waste your time. I downloaded R and I like it very much.
However, my main interest is in plotting 3D graphics form imported data
(points and lines in a 3d space). I imported data in a very elegant way
but I wasn't able to find in R something similar to the simple "splot"
function of WGNUplot (I don't need persp, image, contour: my values are
not
2002 Jan 08
3
Finding functions in uninstalled libraries
(Many thanks to David Barron & Jonathan Baron for pointing me to 'recode' in
the 'car' package).
I think I've been told this before, but how do I search for a
function/keyword in libraries I don't yet have installed?
(ie. on the CRAN site I tried the search engines with "recode" etc., but
didn't pick up the car package this way)
Stuart
Dr Stuart Leask
2001 Mar 22
3
More powerful than objects() or ls()
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 1
minor 2.1
year 2001
month 01
day 15
language R
For years, I used a function in Splus to give me more information than
just the object names which
2006 Jul 30
3
main= bquote(paste("Results for ", beta, "3", ==.(b1)))) doesn't work.
Hi,
I need to plot the beta as the symbol, followed by the index 3 as the title of a graph.
This code works> main= bquote(paste("Results for ", beta ==.(b1))
but I also need the index 3.
I tried (simplified):
>plot(x,y, main= bquote(paste("Results for ", beta, "3", ==.(b1))))
and a few other versions, but I can not get it to run properly.
Any help would
2001 Mar 10
0
Re: [R] Bug in qchisq? (PR#875)
Kenneth Cabrera <krcabrer@epm.net.co> writes:
> Hello developers and users:
>
> My system fails (the computer freezes) when I use the ncp parameter,
> with the lower.tail=FALSE option in the qchisq function.
>
> qchisq(0.025,31,ncp=1,lower.tail=FALSE)
Yup, that's a bug. We have in pnchisq.c
48 for (ux = 1.0; pnchisq(ux, n, lambda, lower_tail, log_p) <
2001 Mar 13
0
Re: [R] Bug in qchisq? (PR#875)
>>>>> "PD" == p dalgaard <p.dalgaard@biostat.ku.dk> writes:
PD> Kenneth Cabrera <krcabrer@epm.net.co> writes:
>> Hello developers and users:
>>
>> My system fails (the computer freezes) when I use the ncp parameter,
>> with the lower.tail=FALSE option in the qchisq function.
>>
>>
2002 Feb 21
1
Factor analysis of categorical or mixed categorical/continuous data in
Are there any suitable routines that perform factor analysis of categorical
or mixed categorical/continuous data in R?
Stuart
Dr Stuart Leask MA MB BChir (Cantab) MRCPsych
Clinical Lecturer in Psychiatry, University of Nottingham Dept Psychiatry
Duncan Macmillan House, Porchester Road, Nottingham. NG3 6AA. UK
tel. 00 44 115 969 1300 xtn 40784 fax 0115 955 5352
2002 Jan 09
1
value labels from read.spss()?
>From owner-r-help at stat.math.ethz.ch Wed Jan 9 10:08:44 2002
>
>Does anyone know how to access/list the value labels stored in a SPSS .sav
>file?
>At the moment I can read in variables using read.spss() (foreign package),
>but have to power up SPSS to check value labels.
>
>Stuart
There may be a solution to this in R, and I would love to hear
it, but I was just faced
2012 Jul 02
3
carpet plots
Hi all,
I wonder why there is so little software for carpet plots (german:
Rasterdiagramm) (Three dimensional plot (x, y, z), the 3rd dimension
(z) symbolized by colourgradients). Besides from one or the other non
free software I only found an OpenOffice macro, a combination of
Gnuplot and Excel (an Excel macro calling gnuplot)
(http://www.johannes-hopf.de/2009/12/carpet-plot-version-1-3/9 and
2003 Feb 19
4
Help in separate window under X11
Dear R users,
Is there the possibitily in R under X11 to get (after typing help(...)
command) separate help window, as it is in Windows version?
Best wishes,
=================================
Dr. Alexey B. Shipunov
Section of Molecular Systematics
Jodrell Laboratory
Royal Botanic Gardens, Kew,
Richmond, Surrey, TW9 3DS, U.K.
e-mail: a.shipunov at rbgkew.org.uk
2008 Jan 28
1
Integer vs numeric
Hi the list.
I do not understand the philosophy behind numeric and integer.
- 1 is numeric (which I find surprising)
- 2 is numeric.
- 1:2 is integer.
Why is that ?
Christophe
2002 Jan 06
2
Passing names of variables to functions
Hi,
I am still new to R and have a programming question. I have created a
small function which takes a parameter. In the function I want to be able
to refer to the names of the variables sent to the function (specifically
I want to be able to use the name of the variable given to the function in
an output table). For example, in the following (fictional) function I
want some way of printing
2002 Jan 18
1
RE: z-scores for different factor levels
Hi Stuart,
I often use this small function
standardize <- function(x) ( x - mean(x, na.rm=T) ) / sqrt(var(x,
na.rm=T))
to standardize variables.
You should be able to use this to do what you want by splitting the data
frame into sections based on the factor level, using standardize() to create
a new variable in each section, then paste the data frame back together.
Something like:
#
2004 Sep 06
1
qchisq (PR#7212)
Full_Name: David Clayton
Version: 1.8.1
OS: Linux
Submission from: (NULL) (131.111.126.242)
qchisq behaves very strangely when ncp is passed as zero (forcing internal
qnchisq to be called) when first argument is small.
Eg
> qchisq(1-1e-6, 1, ncp=0, lower.tail=TRUE)
qchisq(1-1e-6, 1, ncp=0, lower.tail=TRUE)
[1] 1024
while, if ncp is unspecified,
> qchisq(1-1e-6, 1)
qchisq(1-1e-6, 1)
2004 Jan 19
2
small bug on qchisq (PR#6442)
Full_Name: Drouilhet R?my
Version: 1.8.1
OS: Linux
Submission from: (NULL) (195.221.43.136)
qchisq(1,10) works well but qchisq(1,10,ncp=0) does not work whereas ncp=0 is
the default value of the function qchisq(1,10). (of course, 10 will be replaced
by any integer value).
Let us notice that this bug occurs only when applying probability one.
(qchisq(seq(0,.9,.1),10,ncp=0) works very well).
2003 Apr 13
2
Peculiarity in non-central qchisq for ncp > 294.92 ...
Hello all,
Here's my query:
Running R 1.6.2 on FreeBSD 5.0, and on WinXP, and I find that the
following hangs the process:
dchisq(alpha=0.01, df=1, ncp=295)
but it does work for ncp < 294.92.
Is this general?
Best wishes to all,
Andrew
Andrew Robinson Ph: 208 885 7115
Department of Forest Resources Fa: 208 885 6226
University of Idaho E : andrewr at uidaho.edu
PO
2011 May 05
1
Why is PQMSTATUS empty?
Hey all!
I'm trying to do a bit of logic here so that a user only has to dial one
code to pause/unpause in a queue (e.g. *0 will (un)pause depending on the
users's state). My logic looks fine to me but every time ${PQMSTATUS} shows
up empty.
Here's the extensions.conf part....
exten => *0,1,NoOp(${PQMSTATUS})
exten => *0,n,Macro(user-callerid,SKIPTTL,)
exten =>
2001 Sep 21
4
How to change the levels of a variable???
Hi,
I have a simple question.
I have a variable with 3 levels.
Variable
A A A A A A
B B B B B B
C C C C C C
I need to make a new vector renaming de levels B and C for D.
NewVariable
A A A A A A
D D D D D D
D D D D D D
I dont find how to make it in manuals or in this list.
Can anyone help-me???
Thank you
Ronaldo
--
Agnes' Law:
Almost everything in life is easier to get into than out of.
2007 Dec 29
2
[LLVMdev] llvm-gcc-4.2 and -O4
What are the current limitations of using -O4 in
llvm-gcc-4.2? As a first test, I compiled the molscript
program first as -O3 and it works fine. However if i
try to compile the same code as -O4, the build fails with...
ar -cru clib.a args.o str_utils.o dynstring.o err.o indent.o vector3.o matrix3.o quaternion.o body3d.o extent3d.o io_utils.o colour.o key_value.o named_data.o double_hash.o
2002 Jul 11
3
R GUI For Which User?
I also agree with Philippe Grosjean that there is a need to investigate the
effects of different types of GUIs on software "usability". To do that,
however, there is a need to develop a set of appropriate metrics, and to
understand that the appropriateness of a given metric (and ultimately a given
type of GUI) is likely to be conditional on the type of user.
My sense is that the