Hi all,
I recently wrote some code to store a number of polynomial models in a list and
return this list. The model is returned fine, but when I make a subsequent call
to predict(), I have an error. The code for polyModel selection is listed at
the end of the email. Here is an example of the
Thanks Jim! I posted the specifics of what I'm trying to accomplish here:
http://r.789695.n4.nabble.com/Slow-Data-Table-Merge-td3072027.html
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Hello all,
Months ago, when I wanted to compute Nash equilibria (both standard and
generalized), I only found one package that implements the discrete, i.e. when
the player payoff is represented by a matrix. So I decided to implement the
computation when the payoff is a continuous payoff,
Hi all,
I have a zoo object issue. When I create a zoo object I have following error
message: some methods for 'zoo' objects do not work if the index entries in
'order.by' are not unique.
I checked if I have some duplicates in the 'Time' column, R says yes, but
when I check the data set I can't
On Sat, Dec 4, 2010 at 5:40 AM, Alexander Salim sa...@gmx.ch wrote:
Hi all,
I have a zoo object issue. When I create a zoo object I have following error
message: some methods for 'zoo' objects do not work if the index entries in
'order.by' are not unique.
I checked if I have some duplicates
On 04/12/2010 5:40 AM, Alexander Salim wrote:
Hi all,
I have a zoo object issue. When I create a zoo object I have following error
message: some methods for 'zoo' objects do not work if the index entries in
'order.by' are not unique.
I checked if I have some duplicates in the 'Time' column, R
hi,
i am trying to figure out how to put a caption on the colour scale of a
levelplot. there does not seem to be an option for this in levelplot().
i tried using mtext() but as soon as you put the text far out enough on
the right of the plot, it goes beyond the plot boundary. so i tried to
extend
Hi Christophe,
Aren't you also using fixed-point acceleration schemes (from the SQUAREM
package) for solving the Nash equilibria?
How does fixed-point acceleration approach compare to the optimization approach
in terms of speed and robustness (i.e. convergence from bad starting values)?
Finally, I decided not to depends on SQUAREM, which I used for testing.
Nevertherless extrapolation methods for fixed point iteration are at least
twice faster than the crude fixed-point iteration or other relaxation methods.
Later I would like to do a real benchmark of all methods, not just
On Sat, Dec 4, 2010 at 10:09 AM, Christophe Dutang duta...@gmail.com wrote:
Months ago, when I wanted to compute Nash equilibria (both standard and
generalized), I only found one package that implements the discrete, i.e.
when the player payoff is represented by a matrix.
Could you please
Your R script works very well. Thank you very much.
Lisa
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On Dec 4, 2010, at 8:25 AM, Andrew Collier wrote:
hi,
i am trying to figure out how to put a caption on the colour scale
of a
levelplot. there does not seem to be an option for this in
levelplot().
Agreed. I could not find one in the levelplot help page or in the
chapter of Lattice on
On Wed, Dec 1, 2010 at 11:15 PM, Deb Midya debmi...@yahoo.com wrote:
Hi R users,
Thanks in advance.
I am using R 2.12.0 on Windows XP.
May I request you to assist me in the following please.
1. I am getting error while downloading quote data from yahoo finance.
The example code is below
Hi All... I haven¹t found mention of this error anywhere. I'm trying to
draw spline curves using grid graphics. Most of the time, I have no
problems, but I have some data sets that give the error in the subject line.
I'm not sure which end points are identical, but the end points passed to
the
Hello.
I'm trying to solve a quadratic programming problem of the form min
||Hx - y||^2 s.t. x = 0 and x = t using solve.QP in the quadprog
package but I'm having problems with Dmat not being positive definite,
which is kinda okay since I expect it to be numerically semi-definite
in most cases.
I know little of statistics and have created this function out of intuition.
But since this algorithm is so basic I wonder what is the proper name of
this function and is it build in R.
here is some code in PHP to illustrate what the function is doing, it uses
some function I created but the
From: josh.m.ulr...@gmail.com
Date: Sat, 4 Dec 2010 14:47:45 -0600
To: debmi...@yahoo.com
CC: r-help@r-project.org
Subject: Re: [R] Downloading quote data from yahoo finance
On Wed, Dec 1, 2010 at 11:15 PM, Deb Midya wrote:
Hi R users,
Andrew,
see below
On 2010-12-04 08:25, David Winsemius wrote:
On Dec 4, 2010, at 8:25 AM, Andrew Collier wrote:
hi,
i am trying to figure out how to put a caption on the colour scale
of a
levelplot. there does not seem to be an option for this in
levelplot().
Agreed. I could not find one
year1 is the time series data set below
11.64
11.50
11.49
11.16
11.15
11.37
11.37
11.57
11.83
11.87
11.85
11.92
11.77
11.71
11.57
11.24
11.27
11.33
11.17
.
With a total of 1304 rows of data.
When I try to run the code:
diff(sqrt(year10))
I get the response: data frame with 0
Hi:
dt[, mean(A), by = 'B']
B V1
[1,] 1 1.00
[2,] 2 1.67
[3,] 3 2.33
[4,] 4 3.00
...and I can see you've found the data.table mailing list...
HTH,
Dennis
On Fri, Dec 3, 2010 at 3:38 PM, Santosh Srinivas santosh.srini...@gmail.com
wrote:
Hello Group,
I need a
Hi Rich,
I was looking for something that I could make general, as a latex.ftable
method for ftable objects. I realize you showed how to do this for a
particular case, but I'm having a bit of trouble translating this into
a general solution for 1 or more row variables and 1 or more col
Hi Andre
Just saw your email; I'm the author of the 'debug' package but I don't
subscribe to R-help, so it's best to email me directly with questions about
'debug' or 'mvbutils'.
The quick answer is that you can either:
- mtrace( mymodel), then after it has executed the 'build -
Hi;
I'm trying to use bandplot function. I've installed the gplots package but
still the function is not found in R. what's the problem?
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Sincerely
Nasrin Pak
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On Dec 4, 2010, at 8:56 PM, Nasrin Pak wrote:
Hi;
I'm trying to use bandplot function. I've installed the gplots
package but
still the function is not found in R. what's the problem?
That usually means you have not yet loaded it. Try one of:
library(gplots)
require(gplots)
--
David
I am trying to find the function where I can search for a pattern in a
text string (I thought I could use grep for this but no :().
x
[1] abcdefghijkl
I want to find the positions (i.e. equivalent of nchar) for cd and
in case there are multiple hits .. then the results as a array
Thank you.
On Sun, 5 Dec 2010, Santosh Srinivas wrote:
I am trying to find the function where I can search for a pattern in a
text string (I thought I could use grep for this but no :().
Correct, but reading
?grep
and running
example( grep )
should show you how to do that search.
x - abcdefghijkl
?regexpr
starting httpd help server ... done
regexpr('cd', x)
[1] 3
attr(,match.length)
[1] 2
On Sat, Dec 4, 2010 at 9:34 PM, Santosh Srinivas
santosh.srini...@gmail.com wrote:
I am trying to find the function where I can search for a pattern in a
text string (I thought I
hi peter and david,
thanks for the excellent suggestions. here is something like what i am
finally using (those fancy fonts were really tempting, but i chose
something a little more mundane!):
library(lattice)
x - sort(rnorm(100,50,10))
y - sort(runif(100,0,20))
d - expand.grid(x=x, y=y)
d$z -
On 2010-12-04 21:29, Andrew Collier wrote:
hi peter and david,
thanks for the excellent suggestions. here is something like what i am
finally using (those fancy fonts were really tempting, but i chose
something a little more mundane!):
library(lattice)
x- sort(rnorm(100,50,10))
y-
On Sun, Dec 05, 2010 at 08:04:08AM +0530, Santosh Srinivas wrote:
I am trying to find the function where I can search for a pattern in a
text string (I thought I could use grep for this but no :().
x
[1] abcdefghijkl
I want to find the positions (i.e. equivalent of nchar) for cd and
in
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