Displaying 20 results from an estimated 51 matches for "trenkler".
2007 Nov 07
3
Using R for large econometric models
...hese
situations?
2. What kind of difficulties will he have to face? Are there special
tricks (packages) he might try?
3. Can you recommend to use R?
Sorry, if my question is a bit vague but at this point I'm not able to
give any further details.
Any help is very much appreciated.
D. Trenkler
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietrich.Trenkler at Uni-Osnabrueck.de
2007 Jun 29
2
\include-mechanism in Sweave?
....rnw, file2.rnw and
file3.rnw with Sweave code. Working on file2.rnw I whould like to
exclude file1.rnw and file3.rnw temporarily and joining all of them
later. This amounts to a mechanism similar to using LaTeX's \include
command. *Is* there a way to achieve that?
Thank you in advance.
D. Trenkler
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietrich.Trenkler at Uni-Osnabrueck.de
2006 Nov 17
1
Files in EViews format
Dear HelpeRs,
I wonder if anyone knows of ways to read EViews file types.
I did not find a function in the package 'foreign' and a search query
submitted to http://search.r-project.org was not successful.
Any hint is very much welcome.
Dietrich Trenkler
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietrich.Trenkler at Uni-Osnabrueck.de
2004 Aug 06
3
Bug in qnorm or pnorm?
...qnorm(pnorm(x))
[1] 0.06046385
> x<-8.28;x-qnorm(pnorm(x))
[1] 0.07046385
> x<-8.29;x-qnorm(pnorm(x))
[1] 0.08046385
> x<-8.30;x-qnorm(pnorm(x))
[1] -Inf
Given that pnorm(8.30) delivers 1 shouldn't we get Inf
for x<-8.30;x-qnorm(pnorm(x)) ?
Thanks in advance.
Dietrich Trenkler
--
Dietrich Trenkler Universit??t Osnabr??ck
FB Wirtschaftswissenschaften
Rolandstr.8 D-49069 Osnabr??ck
dtrenkler at nts6.oec.uni-osnabrueck.de
2006 Mar 13
2
dotchart: Gap between text and chart
...ke to display with dotchart. The
labels are very long, so the chart becomes too small. Setting cex=0.7
seems to be a good compromise, but the gap between the text and the
chart still is too large. I did not find a "gap" parameter in the
description of dotchart...
Thanks for any help.
D. Trenkler
"a" <- structure(c(103.35, 36.73, 55.09, 302.66, 68.54, 35.46,
138.65, 25.21, 110.85, 6.66, 46.57, 70.23), .Names =
c("Nahrungsmittel und alkoholfreie Getraenke",
"Alkoholische Getraenke, Tabakwaren", "Bekleidung und Schuhe",
"Wohnungsm...
2000 Dec 17
1
AW: Permutations
...f 1:n.
all.perm <- function(n) {
p <- matrix(1, ncol = 1)
for (i in 2:n) {
p <- pp <- cbind(p, i)
v <- c(1:i, 1:(i - 1))
for (j in 2:i) {
v <- v[-1]
p <- rbind(p, pp[, v[1:i]])
}
}
p
}
Regards,
*** D.Trenkler ***
====================================================================
Dietrich Trenkler (trenkler at nts6.oec.uni-osnabrueck.de)
Statistik / Empirische Wirtschaftsforschung
Universitaet Osnabrueck
Rolandstrasse 8 Phone: +49(0) 541-969-2753
D-49069 Osnabru...
2000 Mar 07
2
AW: anova-bug in R-version 1.0.0? (PR#470)
...already exists
I didn't take care of this message. Now I removed wilcox.test, saved
the WS, restarted R without the vanilla-option and alas, anova
now works.
It seems that R stops initializing after encountering the error
mentioned above. Is this correct?
> Regards,
>
> *** D.Trenkler ***
>
> ====================================================================
> Dietrich Trenkler (trenkler@oec.uni-osnabrueck.de)
> Statistik / Empirische Wirtschaftsforschung
> Universitaet Osnabrueck
> Rolandstrasse 8 Phone: +49(0) 54...
2006 Oct 26
3
Measurements of 3000 criminals
...minals (raw data) are
available anywhere. At least I didn't find them in the R datasets
package or by means of Google. What I did find was a table of
frequencies of the central values for *grouped* classifications (finger
lenghts) in the Handbook of Small Data Sets.
Thank you in advance.
D. Trenkler
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietrich.Trenkler at Uni-Osnabrueck.de
2007 Sep 21
1
Error using nls()
...7
Error in qr.solve(QR.B, cc) : singular matrix 'a' in solve
However, using:
> jjf <- function(x){z <- log(q1)-x[1]+(x[2]/x[3])*(d1^x[3]-1);sum(z*z)}
> optim(c(0,1,1),jjf)
rendered (some of) the results desired in a jiffy. What am I doing
wrong?
Dietrich
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietrich.Trenkler at Uni-Osnabrueck.de
2000 Mar 14
2
Bug in sub? (PR#487)
...ring_"This is a bug!"
> sub("!", ", or isn't it?", string)
[1] "This is a bug, or isn't it?"
> string_"This is a bug?"
> sub("?", ", or isn't it?", string)
[1] "This is a bug?"
Regards,
*** D.Trenkler ***
====================================================================
Dietrich Trenkler (trenkler@oec.uni-osnabrueck.de)
Statistik / Empirische Wirtschaftsforschung
Universitaet Osnabrueck
Rolandstrasse 8 Phone: +49(0) 541-969-2753
D-49069 Osnabrueck...
2004 Aug 23
1
Two factor ANOVA with lm()
...y default? Where can I find a documentation for this
behavior?
I know that I can use something like lm(y~X) where y <- c(6.8, 6.6,
5.3, 6.1, 7.5, 7.4, 7.2, 6.5, 7.8, 9.1, 8.8, 9.1) and X is an
appropriate design matrix. But I wonder if there is a more direct way.
Many thanks in advance.
D. Trenkler
--
Dietrich Trenkler Universit??t Osnabr??ck
FB Wirtschaftswissenschaften
Rolandstr.8 D-49069 Osnabr??ck
dtrenkler at nts6.oec.uni-osnabrueck.de
2004 Jul 15
1
GHK simulator
...imulator to estimate multivariate normal probabilities. See for instance
page 194 of
@BOOK{Greene97,
author = {William H. Greene},
year = 1997,
title = {Econometric Analysis},
edition = {3rd},
publisher = {Prentice-Hall},
address = {New Jersey 07458}
}
Thank you.
Dietrich Trenkler
--
Dietrich Trenkler Universit??t Osnabr??ck
FB Wirtschaftswissenschaften
Rolandstr.8 D-49069 Osnabr??ck
dtrenkler at nts6.oec.uni-osnabrueck.de
2006 Sep 13
1
S in cor.test(..., method="spearman")
...]
S = 769.4403, p-value = 1.543e-08
alternative hypothesis: true rho is not equal to 0
sample estimates:
rho
0.828823
I wonder what S is. I presume it is
sum((rank(ice[,1])-rank(ice[,2]))^2),
but this delivers 768.5. Is it the way ranks are computed in cor.test?
Thank you in advance.
D. Trenkler
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietrich.Trenkler at Uni-Osnabrueck.de
2001 Sep 25
1
Bug in boxplot.stats?
...;f",digits=16)
[1] "7.9000000000000004"
Version:
platform = i386-pc-mingw32
arch = x86
os = Win32
system = x86, Win32
status =
major = 1
minor = 3.1
year = 2001
month = 08
day = 31
language = R
Windows NT 4.0 (build 1381) Service Pack 6
--- D.Trenkler ---
****************************************************************************
*****
Dr. Dietrich Trenkler (dtrenkler at nts6.oec.uni-osnabrueck.de)
Statistik / Empirische Wirtschaftsforschung
Universitaet Osnabrueck
Rolandstrasse 8 Phone:...
2001 Oct 05
3
3dim histogram?
Hello all,
I wonder if there is a package including a program to display a 3dim
histogram.
Thanks.
--- D.Trenkler ---
****************************************************************************
*****
Dr. Dietrich Trenkler (dtrenkler at nts6.oec.uni-osnabrueck.de)
Statistik / Empirische Wirtschaftsforschung
Universitaet Osnabrueck
Rolandstrasse 8 Phone:...
2000 Mar 20
1
Elementwise c() for lists
I have two lists of equal lengths. Each one consists of vectors. Is
there an elegant way to combine them elementwise? Elegant means: without
loops.
For instance, for
> jja_list(1:3,4:7)
> jjb_list(rep(0,4),(2,5))
I would like to get:
> list(c(1:3,rep(0,4)),c(4:7,rep(2,5))).
--- D.Trenkler ---
************************************************************************
*********
Dietrich Trenkler
(trenkler at oec.uni-osnabrueck.de)
Statistik / Empirische Wirtschaftsforschung
Universitaet Osnabrueck
Rolandstrasse 8 Phone: +49(0)
541-969-2753...
2006 Mar 13
1
[R] dotchart: Gap between text and chart (PR#8681)
(Moved from r-help)
On 3/13/2006 9:33 AM, Dietrich Trenkler wrote:
> I have some data which I would like to display with dotchart. The
> labels are very long, so the chart becomes too small. Setting cex=0.7
> seems to be a good compromise, but the gap between the text and the
> chart still is too large. I did not find a "gap" parameter...
2000 Apr 06
1
Generating Rd format under Windows
...ting R documentation" in the "Writing R
extensions"
manual. Under section 2.9: "Processing Rd format" I only
find hints at generating the Rd format on a Unix platform. Have I
overlooked how to generate them under Windows?
Any help is gratefully appreciated.
--- D.Trenkler ---
************************************************************************
*********
Dietrich Trenkler
(trenkler at oec.uni-osnabrueck.de)
Statistik / Empirische Wirtschaftsforschung
Universitaet Osnabrueck
Rolandstrasse 8 Phone: +49(0)
541-969-2753...
2006 Feb 28
3
LaTeX in R graph
Hello,
I would like to know if it is possible to insert LaTeX typesetting in R output.
I want to obtain a graph with LaTeX label in order to incorporate it as
postscript or pdf,
x<-seq(0,1,length=100)
y<-x*x
plot(x,y,xlab="$X$",ylab="$X^2$")
2007 May 04
1
Bug in qr.R ? (PR#9655)
...000 2.0000000
[2,] 0 -2.236068 -3.130495 -0.8944272
[3,] 0 0.000000 -4.919350 -0.4472136
In ?qr.R I find
/qr.R returns R. The number of rows of R is nrow(X) or ncol(X),
depending on whether complete is TRUE or FALSE./
As you can see, the number of rows stays the same...
Thank you.
D. Trenkler
--please do not edit the information below--
Version:
platform = i386-pc-mingw32
arch = i386
os = mingw32
system = i386, mingw32
status =
major = 2
minor = 5.0
year = 2007
month = 04
day = 23
svn rev = 41293
language = R
version.string = R version 2.5.0 (2007-04-23)
Windows XP (buil...