Displaying 20 results from an estimated 1000 matches similar to: "Re: Windows versus Unix packages in CRAN ..."
2004 May 23
0
Re: Windows versus Unix packages in CRAN ...
Concerning the Rmetrics packages,
(1) There is a _much_ better thing to do than
>simply ... to remove the stuff related to MS Win from zzz.R;
> in partricular the lines after if( .... ) to clear your message.
> As you can see, the info relates to the WinMenu under MS Win.
as Janusz Kawczak suggests, and that is to *wrap* the troublesome code
in
if
2003 Jul 12
2
using cut on matrices
Dear list,
I'd like to use the function cut() on matrices, ie that when I apply
it to a matrix, it would return a matrix of the same dimensions
instead of a vector.
I wonder if there is a better (more elegant) solution than
matrix(cut(a, ...), ncol=ncol(a), nrow=nrow(a))
because I would like to use cut on both vectors and matrices and avoid
testing whether a is a matrix.
Thanks,
Tamas
2004 Apr 10
4
(offtopic) I need two sets of 5 different color scales
Hi,
I am plotting a policy function (result from a dynamic stochastic
optimization problem, discretized approximation). The policy function
maps from an 2 x 2 x 2 x 3 x B x F state space to a B x F state space
(B and F are usually between 4-6, and represent domestic and foreign
savings. The other variables are income (Y), inflation (Pi), domestic
and foreign interest rates (R and Z)). I
2004 Jul 05
1
general questions about R on debian/powerpc
Hi,
I am about to but a laptop, and have narrowed the choices down to a
Dell Latitude 600 and an Apple Powerbook G4 Aluminium (Princeton
provides these models at a discount for grad students).
I am biased towards the Powerbook, and would like to run Debian on it.
I have only used debian on i386 platforms so far. I use R quite
frequently, so I would be interested in your experience of running R
2003 Apr 23
1
Setting up Xemacs + Sweave
Dear list,
I have tried to setup my Xemacs for use with Sweave, which I indend to learn.
I have followed the instructions in the Sweave FAQ, that is to say, I put
(defun Rnw-mode ()
(require 'ess-noweb)
(noweb-mode)
(if (fboundp 'R-mode)
(setq noweb-default-code-mode 'R-mode)))
(add-to-list 'auto-mode-alist '("\\.Rnw\\'" . Rnw-mode))
(add-to-list
2003 Oct 06
1
visualizing transition probability matrices
Dear List,
I have a couple of (~200) 3x3 transition probability matrices (ie each
defines a Markov chain). They are all estimated from the same
underlying process, so it ie meaningful to take their elemetwise mean
and standard deviation. [1]
First question: supposing that they are given in a list l, how do I
get their elementwise mean and standard deviation? Fortunately, the
mean of trans. prob.
2003 Oct 01
3
fitting Markov chains
I need to find a computationally simple process for the movement of
interest rates. In this simplified model, an interest rate can have
3--5 possible values, and its movement is characterized by a matrix of
transition probabilities (ie, it is a Markov process).
I would like to estimate this process from a given set of data.
For example, let the interest rate time series be:
7 3 8 2 5 9 6
2004 Apr 25
7
R vs Matlab: which is more "programmer friendly"?
Hi,
The department of economics at our university (Budapest) is planning a
course on numerical methods in economics. They are trying to decide
which software to use for that, and I would like to advocate R. The
other alternative is Matlab.
I have found comparisons in terms of computational time for matrix
algebra, but I don't think that is relevant: the bottleneck for
economists is usually
2004 Apr 26
1
need settings for the listings package
Hi,
I am typesetting R code in TeX using the listings package. I have
experimented with various settings for the text, but all look a bit
ugly. This might be because I have no typographic experience ;-)
I would really appreciate if people sent me the settings they use for
the listings package (eg in the \usepackage line, or \lstset, I am
thinking about choices for basicstyle, ... etc). I
2004 Mar 31
1
extracting values from a 3d array using a matrix from indices
Suppose I have A, an n x m matrix, each element is an integer (an
index).
I also have B, an n x l x m array. I need C, where
C[n,m] = B[n, A[n, m], m]
I am currently using loops, what would be the "R way" to do this?
Another question: let
A[n, m] <- argmax_l B[n, l, m]
what would be the nicest way of doing this? Currently I am using
max.col and a single loop, going though the
2004 Apr 21
2
resetting the interpreter
Hi,
Sometimes I want to "reset" the R interpreter (as if I quit and
started it again, with everything starting from scratch). The main
reason for this is when I expreriment with calculations, and later
form them into general functions, sometimes I forget to include
variables or reset some settings which I don't notice because they are
already set. This causes problems during batch
2003 Apr 17
1
Testing for whole numbers
Is there a way in R to test if a given number is an integer, ie a
whole number? I am not referring to the data type of a number, but to
its value.
That is to say, is.whole(pi-pi+2) would be TRUE, whereas is.whole(4/3)
would be false. At the moment I am using
is.whole <- function(a) { floor(a)==a }
which is OK for real numbers, but not for complex ones (a+bi would be
a whole number if both a
2003 Apr 05
3
slides in linux R
Hello,
In S-Plus Windows you can transform graphics to Powerpoint very easily, in R Windows you can use enhanced metafiles (.emf) and Powerpoint almost as easy. Is there a simular way with R in Linux to transform to the presentation program in StarOffice or OpenOffice or are you stuck with the pdf device?
Fredrik Lundgren
2004 Apr 02
2
"(de)linearizing" array indices
Hi,
I have a dynamic programming problem with many state variables, let's
call them l, n, m, etc. The transition probabilities are originally
given in an array form, eg
transtition[l,m,n,ll,mm,nn]
give the probability of going from l,m,n to ll,mm,nn.
However, the numerical solution is best handled when I "flatten" the L
x M x N state space into a single one (call it S), ie a
2004 Apr 27
5
parsing a data file
Hi,
I need to parse a data file (output of a measuring device) of the
following format:
BEGIN RECORD [first record data] RECORD [second
record data] RECORD
[third record data]
END
Line breaks can (and do ;-() occur anywhere. White space behaves very
much like TeX, eg it is not important whether there are one or more
spaces or linebreaks as long as there is one of them. It is a text
file, not
2004 Apr 07
1
eigenvalues for a sparse matrix
Hi,
I have the following problem. It has two parts.
1. I need to calculate the stationary probabilities of a Markov chain,
eg if the transition matrix is P, I need x such that
xP = x
in other words, the left eigenvectors of P which have an eigenvalue of
one.
Currently I am using eigen(t(P)) and then pick out the vectors I need.
However, this seems to be an overkill (I only need a single
2004 Jun 25
3
sweave: graphics not at the expected location in the pdf
Hi
I use sweave for excellent pdf output (thank you- Friedrich Leisch). I
have just one problem. Quite often it happens, that the graphics are not
at the place where I expect them, but (often on a separate page) later
on in the pdf. How can I fix this, means how can I define, that I want a
graphic exactly here and now in the document?
Many thanks and best regards
Christoph
--
Christoph
2004 Apr 22
1
Re: pausing a program
R:
I have a program that runs a For loop for days and I need to (if possible)
pause the program. Any ideas on how to do that? If I use stop, how
certain can I be that all the statements executed in the previous
iteration of the for loop?
Thanks,
Jason Higbee
Research Associate
Federal Reserve Bank of St. Louis
E: jason.l.higbee@stls.frb.org
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2004 Apr 24
1
Colour coding and point types in a plot
R 1.8.1, Windows 2000.
I am trying to find the "legend" for color coding and point types in a plot, which probably are standard for everybody but myself. Thanks for the tip!
Mihai Nica
Jackson State University
"No good deed will ever remain unpunished"
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2004 May 29
2
bar plot patterns
Dear R users,
Is there a package or function that can produce multiple fill patterns to be used instead of colors in barplots or pie charts? Shades of grey are difficult to differentiate if more than 3 to 5..
Osman
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