Displaying 20 results from an estimated 600 matches similar to: "Fonts on contour maps..."
2003 Apr 02
7
Index of item in matrix
Hello All,
Is there a fast way to find the index(row and column) of a point in a
matrix?
Thanks,
John.
--
--------------------------------------------------------------------------
Dr. John Janmaat
Department of Economics, Acadia University, Wolfville, NS, B4P 2R6
E-mail: jjanmaat at acadiau.ca Web: http://ace.acadiau.ca/~jjanmaat
Tel: 902-585-1461 Fax: 902-585-1070
2006 Aug 09
1
NLS and IV
Hello All,
I'm looking to test a variable in a logit model (glm(...,
binomial(link="logit"))) for exogeneity (endogeneity). At this point I am
planning to try implementing Jeffery Grogger's "A Simple Test for Exogeneity in
Probit, Logit, and Poisson Regression Models", Economic Letters, 1990. To do
this, I need to be able to do an instrumental variables NLS
2006 Feb 05
3
Cluster Analysis - Number of Clusters
Hello,
I'm playing around with cluster analysis, and am looking for methods to
select the number of clusters. I am aware of methods based on a 'pseudo
F' or a 'pseudo T^2'. Are there packages in R that will generate these
statistics, and/or other statistics to aid in cluster number selection?
Thanks,
John.
--
2004 Aug 18
3
downloading the R program
I am trying to download the R program, but am having trouble. I have
read through the instructions, but do not seem to be able to do it
properly. Can you tell me the step-by-step instructions?
Joanne L. Butler, Post-doctoral Fellow
Equity and Technology Research Project
c/o Department of Sociology
Acadia University
Wolfville, N.S. B4P 2R6
phone (902) 585-1535
fax (902) 585-1769
2004 Jul 27
1
Underline in expression().
Hello All,
Is there an analogue to \underbar or the AMS math \underline in
graphical math expressions?
Thanks,
John.
--
=====================================================================================
Dr. John Janmaat
Department of Economics
Acadia University
Wolfville, Nova Scotia, Canada
B4P 2R6
TEL: 902-585-1461
WWW: http://ace.acadiau.ca/~jjanmaat/
EMAIL: jjanmaat at acadiau.ca
June
2003 Jun 27
1
R-help Digest, Vol 4, Issue 27 ( -Reply)
Hi,
I am out of town and will get back to you on the 13th of July.
Leo
>>> "r-help at stat.math.ethz.ch" 06/27/03 00:32 >>>
Send R-help mailing list submissions to
r-help at stat.math.ethz.ch
To subscribe or unsubscribe via the World Wide Web, visit
https://www.stat.math.ethz.ch/mailman/listinfo/r-help
or, via email, send a message with subject or body
2006 Mar 28
1
hybridHclust (new package)
I'd like to announce the availability of a new library for hybrid
hierarchical clustering, "hybridHclust". The library has been uploaded
to CRAN and is now available.
The library implements a hybrid of top-down and bottom-up hierarchical
clustering. Along the way, the idea of a "mutual cluster" is developed.
A mutual cluster is a set of observations whose largest
2006 Mar 28
1
hybridHclust (new package)
I'd like to announce the availability of a new library for hybrid
hierarchical clustering, "hybridHclust". The library has been uploaded
to CRAN and is now available.
The library implements a hybrid of top-down and bottom-up hierarchical
clustering. Along the way, the idea of a "mutual cluster" is developed.
A mutual cluster is a set of observations whose largest
2002 Jan 09
4
Cochrane-Orcutt method
Hello,
Is there a package that implements the Cochrane-Orcutt itterative
procedure for dealing with autocorrelation in a regression model?
Thanks,
John.
--
==========================================
John Janmaat
Department of Economics
Acadia University, Wolfville, NS, B0P 1X0
(902)585-1461
All opinions stated are personal, unless
otherwise indicated.
2003 Dec 29
1
installing packages on MAC os X
Hello,
I've just downloaded and installed the RAqua onto my Mac and I have R
up and running fine. Now I'm trying to get 'ape' downloaded and
installed and having quite the difficulty. I am following the
directions specified under 'Installing packages' where packages can be
downloaded and installed from within R. I get the following error
messages:
1: argument
2005 May 01
3
Roots of quadratic system.
Hello,
I have a system of quadratic equations (results of a Hamiltonian optimization)
which I need to find the roots for. Is there a package and/or function which
will find the roots for a quadratic system? Note that I am not opimizing, but
rather solving the first order conditions which come from a Hamiltonian. I am
basically looking for something in R that will do the same thing as fsolve in
2002 Apr 09
3
expressions on graphs
Hello,
I am trying to get a time derivative on a plot title. I prefer to have
it in the form \dot{s_i}, but \partial s_i/\partial t would be O.K. In
the graphics demo I cannot find either a dot or a partial equivalent.
Thanks,
John.
--
==========================================
John Janmaat
Department of Economics
Acadia University, Wolfville, NS, B0P 1X0
(902)585-1461
All opinions stated
2012 Jan 21
1
contour(): Thickness contour labels
Hi,
I want to display some contour labels. It works well, but the thickness of
the label is to low. I tried the "labcex" command
contour(x,y,z, labcex=2)
But only the size is rising and not the thickness of labels. Only if i set
the value to "labcex=10" the thickness is good, but the size is to big, so
i can't see anything ;)
Is there any command to rise the thickness
2000 Feb 16
2
contour() labels (PR#441)
R-0.99.0a now plots contour labels from contour(), but the values in
levels seem to be coerced to integer.
Reproduce by:
> set.seed(2)
> contour(matrix(runif(36),nrow=6), labcex=1.2)
and compare with:
> set.seed(2)
> contour(matrix(10*runif(36),nrow=6), labcex=1.2)
Ray Brownrigg
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list --
2002 Feb 19
1
Constrained optimisation
Hello,
I need to solve a non-linear optimization with non-linear constraints.
The 'nlm' routine does not seem to allow constraints. Is there a
package for solving such problems in R?
Thanks,
John.
--
==========================================
John Janmaat
Department of Economics
Acadia University, Wolfville, NS, B0P 1X0
(902)585-1461
All opinions stated are personal, unless
2002 Mar 10
1
multiple pairwise slope comparisons
Hello,
I have a linear model with different slopes for different treatment
groups. I need to pairwise compare the different slope estimates for
the different treatment groups. Is there a package that does pairwise
comparisons of slope coefficients, making the appropriate adjustments in
the P values?
Thanks,
John.
--
==========================================
John Janmaat
Department of
2002 Feb 22
1
Logit / ms
Hello,
I am looking for a routine to do a logistic regression. In the book
"Modern Applied Statistics with S-PLUS" a function is described which
uses the 'ms' command. Is there an analogue for R, or an alternative
approach that can accomplish the same thing?
Thanks,
John.
--
==========================================
John Janmaat
Department of Economics
Acadia
2010 Jul 15
1
Error using the mi package
I'm trying to impute data using the mi package, but after running
through almost the entire first round of imputations (which takes
quite a while), it throws this error (I'll include the whole output
prior to the error for context). Does anyone know what is causing it,
or how I can fix it?
More specifically, how can I tell what is throwing the error so I know
what to fix? Is
2000 Jan 17
1
lwd patches for "contour"
I found it useful to have contour be able to do line widths ... hope
that the guts haven't changed an enormous amount in the current
development version ... the patches are relatively trivial, mostly going
by analogy with lty and col (although in my ignorance it took me a while
to figure out what UNPROTECT(2) was and why it should be changed to
UNPROTECT(3) ... hope this is useful.
Ben
2010 Mar 22
1
Distance between lines
Hello,
I'm trying to assess the similarity of two lines that are represented as points (output of differential equation solvers). Is there a function or a package that deals with things like this?
Thanks,
John.
====================================================
Johannus (John) Janmaat
Assistant Professor of Economics
Barber School of Arts and Sciences
University of British Columbia -