On 10/02/13 21:43, David Winsemius wrote:
On Feb 10, 2013, at 12:28 PM, Uwe Ligges wrote:
On 10.02.2013 21:18, Paul Ossenbruggen wrote:
I installed XCode, XQuartz and OpenBUGS on my Mac using WINE.
When I tried to test my installation I received the following error.
If correct, BRu
On 10-02-2013, at 21:16, Axel Urbiz wrote:
> Dear List,
>
> I'm trying to solve this simple optimization problem in R. The parameters
> are the exponents to the matrix mm. The constraints specify that each row
> of the parameter matrix should sum to 1 and their product to 0. I don't
> understan
malaka wrote
> Hi,
> I want to assign the ar1 , ma 1 and the intercept estimated by the
> following code to three variables a, b and c respectively.
>
> Can anyone help me with this please?
>
> code:
>
> a0 = 0.05; a1 = 0.1; b1 = 0.85
> nu = rnorm(2500)
> epsi = rep(0, 2500)
> h = rep(0, 2500)
>
Oops, that's not right. The trigger condition should be init[1]>=30. The
way I have it now I think init[1]=1. I don't know how to fix that yet
because it won't take and if construct ... more reading for me I guess ...
Thanks for pointing that out.
Jannetta
On 11 February 2013 00:09, David Winse
On Feb 10, 2013, at 3:35 PM, Jannetta Steyn wrote:
I managed to get it to work (I think). Code below:
The output certainly looks more sensible. You commented out the if-
reset strategy and are using events. Can you explain how the event
code is triggered? I no longer see a definition of a
Hi,
How to expand or loop for one variable n based on another variable? for
example, I want to add m (from m1 to maxN- n1-2) and for each m, I want to
add n (n1+2 to maxN-m), and similarly add x and y, then I need to do some
calculations.
d3<-data.frame(d2)
for (m in (m1+2):(maxN-(n1+2)){
I just ran into this problem on R2OpenBUGS_3.2-1 using OpenBUGS322 (on Mac
Lion through wine). The error is being thrown when attempting to parse the
index file in bugs.sims:
index <- read.table("CODAindex.txt", header = FALSE, sep=" ")
The CODAindex file is now csv, removing the space delimiter
I managed to get it to work (I think). Code below:
library(deSolve);
Izhikevich <- function(time, init, parms) {
with(as.list(c(init, parms)),{
dv <- (0.04*v^2)+(5*v)+140-u+I;
du <- a*(b*v-u);
#if (v>=30) v<-c else v<-u+d;
list( c(dv, du))
})}
parms=c( a=0.02, b=0.2, c=-65, d=2
I have a binary classification problem where the fraction of positives is
very low, e.g. 20 positives in 10,000 examples (0.2%)
What is an appropriate cross validation scheme for training a classifier
with very few positives?
I currently have the following setup:
=
Sorry, this was meant to go to the full list. -David
On Sun, Feb 10, 2013 at 2:15 PM, David Romano wrote:
>
>
> On Sun, Feb 10, 2013 at 1:59 PM, Bert Gunter wrote:
>
>> Please read the Help before posting.
>>
>> ?"$" says:
>>
>
> It helps to know that $ must be quoted, so thanks again goes to D
Please read the Help before posting.
?"$" says:
"Both [[ and $ select a single element of the list. The main
difference is that $ **does not allow computed indices** , whereas [[
does. x$name is equivalent to x[["name", exact = FALSE]]. Also, the
partial matching behavior of [[ can be controlled
Duncan Murdoch gmail.com> writes:
>
> On 13-02-10 4:06 PM, David Romano wrote:
> > Hi everyone,
> >
> > I ran into the issue below while trying to execute a command of the form
> >
> > apply(list.names,1, function(x) F(favorite.list$x) )
> >
> > where list.names is a character vector containing
On Sun, Feb 10, 2013 at 1:40 PM, Duncan Murdoch wrote:
> On 13-02-10 4:06 PM, David Romano wrote:
>
>> Hi everyone,
>>
>> I ran into the issue below while trying to execute a command of the form
>>
>> apply(list.names,1, function(x) F(favorite.list$x) )
>>
>> where list.names is a character vecto
On Feb 10, 2013, at 12:28 PM, Uwe Ligges wrote:
On 10.02.2013 21:18, Paul Ossenbruggen wrote:
I installed XCode, XQuartz and OpenBUGS on my Mac using WINE. When
I tried to test my installation I received the following error.
If correct, BRugs does not exist for R 2.15.1.
On 13-02-10 4:06 PM, David Romano wrote:
Hi everyone,
I ran into the issue below while trying to execute a command of the form
apply(list.names,1, function(x) F(favorite.list$x) )
where list.names is a character vector containing the names of the elements
of favorite.list and F is some functi
On Sun, Feb 10, 2013 at 9:06 PM, David Romano wrote:
> Hi everyone,
>
> I ran into the issue below while trying to execute a command of the form
>
> apply(list.names,1, function(x) F(favorite.list$x) )
>
> where list.names is a character vector containing the names of the elements
> of favorite.l
On Sun, Feb 10, 2013 at 4:30 PM, Pulkit Mehrotra
wrote:
> Dear sir,
>
> Thank you for your reply and suggestions. Gdb is exactly the thing I was
> looking for. Will certainly report the bug on R-devel if found so.
More likely (though not impossible that it's otherwise) the bug is in
a CRAN (contr
Axel,
Your objective function has the wrong sign. The maximum is infinity, so it
does not make sense to maximize. YOu should be minimizing the product. So,
remove the negative sign and it works as you had expected.
ff <- function (x) {
mm <- matrix(c(10, 25, 5, 10), 2, 2)
matx <- matri
Your constraints are non-sensical. The only way for these constraints to be
satisfied is for two of the parameters to be 0 and the other two to be 1.
Please spend time to formulate your problem correctly, before imposing on
others' time.
Ravi
From: Axel Ur
Hi everyone,
I ran into the issue below while trying to execute a command of the form
apply(list.names,1, function(x) F(favorite.list$x) )
where list.names is a character vector containing the names of the elements
of favorite.list and F is some function defined on a list element.
Namely, the
On 10.02.2013 21:18, Paul Ossenbruggen wrote:
I installed XCode, XQuartz and OpenBUGS on my Mac using WINE. When I
tried to test my installation I received the following error.
If correct, BRugs does not exist for R 2.15.1.
Is there a means to get arrange this problem
I installed XCode, XQuartz and OpenBUGS on my Mac using WINE. When I
tried to test my installation I received the following error.
If correct, BRugs does not exist for R 2.15.1.
Is there a means to get arrange this problem?
Thanks
Paul
The following code is an exam
Dear List,
I'm trying to solve this simple optimization problem in R. The parameters
are the exponents to the matrix mm. The constraints specify that each row
of the parameter matrix should sum to 1 and their product to 0. I don't
understand why the constraints are not satisfied at the solution. I
Dear sir,
Thank you for your reply and suggestions. Gdb is exactly the thing I was
looking for. Will certainly report the bug on R-devel if found so.
regards,
Pulkit
On Fri, Feb 8, 2013 at 9:52 AM, Martin Morgan wrote:
> On 02/08/2013 05:13 AM, Pulkit Mehrotra wrote:
>
>> hello,
>>
>> I was ha
On Sun, Feb 10, 2013 at 5:31 AM, catalin roibu wrote:
> Dear R users,
> I have a problem. I don't know how to select the top 10 (n) values for each
> classes.
Assuming that by top n values in each group you mean the first n rows
in each group then:
n <- 5
dat1[ave(dat1$cls, dat1$cls, FUN = seq_a
You should have used dput().
Assuming the "," are "."
#Using a subset of your example
dat1<-read.table(text="
proc cls
7271 568,03338 0,5
7270 554,68458 0,5
7269 510,20638 0,5
7268 485,59969 0,5
7267 421,92852 0,5
7272 410,12101 0,5
3414 409,71429 0,5
3452 402,78699 0,5
3451 401,28
This new version of glmnet has some bug fixes, and some new features
* new arguments lower.limits=-Inf and upper.limits=Inf (defaults shown) for
all the coefficients
in glmnet. Users can provide limits on coefficients. See the documentation for
glmnet.
Typical usage:
glmnet(x,y,lower=0)
Here t
On 13-02-10 01:22 PM, David Winsemius wrote:
>
> On Feb 10, 2013, at 8:09 AM, Ben Bolker wrote:
>
>> Jannetta Steyn henning.org> writes:
>>
>>>
>>> Hi All
>>>
>>> It has been suggested to me that the folks in this list might be able to
>>> help me out of my misery.
>>>
>>> As part of my learning
Hi Michael,
Just to add to what Yihui suggested, I have used Cygwin on all my
Windows machines to create a Linux environment for years. It is
stable and allows for many features. You can easily get git, svn, and
ruby --- I'm not sure about rubygems. Anyway, with a bit of work, I
suspect you cou
In the past Github allows one to import from an existing SVN
repository automatically via its web interface, but I just checked it
and it seems to have gone. What is left is:
https://help.github.com/articles/importing-from-subversion Perhaps it
is best for you to do the conversion under Linux and t
[I'm not sure if this post should go to R-devel, but thought I'd start
here for wider readership.]
I have a collection of R packages that I maintain using the
eclipse/StatET IDE
(mainly on Windows) with SVN on the R-Forge system,
https://r-forge.r-project.org/users/friendly/
I'd like to cons
On Feb 10, 2013, at 4:22 AM, Jannetta Steyn wrote:
Hi All
It has been suggested to me that the folks in this list might be
able to
help me out of my misery.
As part of my learning curve to building a rather detailed model of
a small
neurone complex I am implementing some existing models
ilai skreiv:
> Like this ?
> xyplot(4:5~4:5, groups=4:5, lex = 5 ,
> par.settings = simpleTheme(cex=10, pch=21, lwd=5),
> auto.key=TRUE)
Thanks, both David and ilai. The ‘lex’ solution seems to work very well.
--
Karl Ove Hufthammer
E-mail: k...@huftis.org
Jabber: huf...@jabber.no
hi catalin, i thought this was a great question and could not find a good
answer on stackoverflow.com, so i have started this thread which asks the
question formally. i have also provided one answer that should be
sufficient for you, but others may weigh in as well
http://stackoverflow.com/questi
Jannetta Steyn henning.org> writes:
>
> Hi All
>
> It has been suggested to me that the folks in this list might be able to
> help me out of my misery.
>
> As part of my learning curve to building a rather detailed model of a small
> neurone complex I am implementing some existing models in R.
Hi All
It has been suggested to me that the folks in this list might be able to
help me out of my misery.
As part of my learning curve to building a rather detailed model of a small
neurone complex I am implementing some existing models in R.
For the moment I want to implement the Izhikevich mod
catalin roibu gmail.com> writes:
>
> Dear R users,
> I don't know how to compute an exponential model like this:
> proc=a*exp(b*cls), or proc=a*exp(b*cls)+c*exp(d*cls). Please help me to
> solve this problem!
>
> Thank you!
>
> My data is:
This still doesn't make much sense/have much contex
On 10/02/2013 14:38, Uwe Ligges wrote:
On 10.02.2013 03:13, James Jong wrote:
What is the purpose of the variable R_HOME? What value should I set it
to?
Don't change it, it is set automatically on startup. See
?R_HOME
True for normal use of R, but another question from the OP suggests th
On Sat, Feb 9, 2013 at 11:43 AM, Uwe Ligges wrote:
>
>
> On 08.02.2013 20:14, David Romano wrote:
>
>> Hi everyone,
>>
>> I'm not exactly sure how to ask this question most clearly, but I hope
>> that
>> giving the context in which it occurs for me will help: I'm trying to
>> compare the brain
Dear R users,
I don't know how to compute an exponential model like this:
proc=a*exp(b*cls), or proc=a*exp(b*cls)+c*exp(d*cls). Please help me to
solve this problem!
Thank you!
My data is:
row.names proc cls
1 0.5 452.616206 0.5
2 1 255.864021 1.0
3 1.5 150.885316 1.5
4 2 86.289600 2.0
5 2.5 56.
On 10.02.2013 03:13, James Jong wrote:
What is the purpose of the variable R_HOME? What value should I set it to?
Don't change it, it is set automatically on startup. See
?R_HOME
Uwe Ligges
Thanks,
James
[[alternative HTML version deleted]]
__
Nice boxplot but you forgot to tell us the issues :)
John Kane
Kingston ON Canada
> -Original Message-
> From: asir...@gmail.com
> Sent: Sat, 9 Feb 2013 08:09:13 -0800
> To: r-help@r-project.org
> Subject: [R] Boxplot Issues
>
> __
> R-help@r
It all depends on where you want the text. Did the other two replies that I
have seen provide a better solution?
If not can you give us some more description of what you want or point to a
graph somewhere on the internet so we can get a better idea of what you want?
John Kane
Kingston ON Cana
No image. png files seem to make it through so if you save as png it should
arrive.
Some sample code and data would help
Is the data in one data.frame or could you put it into one? If so you might
want to try melting the data (see reshape 2 package) and plotting with ggplot2
John Kane
Kings
We might be able to help if we knew what you are doing.
https://github.com/hadley/devtools/wiki/Reproducibility
John Kane
Kingston ON Canada
> -Original Message-
> From: catalinro...@gmail.com
> Sent: Sun, 10 Feb 2013 13:16:12 +0200
> To: r-help@r-project.org
> Subject: [R] compute ex
Wrong list. You may want to ask here:
http://rpy.sourceforge.net/maillist.html
But looking at your output it looks like you need to install readline
library sources
or be sure that it is in the CFLAGS's -I
On 10 February 2013 06:06, James Jong wrote:
> Hi - I am having trouble installing rpy2. I
Dear R users,
Please help me to compute an exponential model with R.
Thank you!
--
---
Catalin-Constantin ROIBU
Forestry engineer, PhD
Forestry Faculty of Suceava
Str. Universitatii no. 13, Suceava, 720229, Romania
office phone +4 0230 52 29 78, ext. 531
mobile phone +4 0745 53 18 01
Hi,
see function ?head or "[".
If DF is you data frame, top n values of DF you can select with head(DF, n)
or DF[1:n, ]...
Andrija
On Sun, Feb 10, 2013 at 11:31 AM, catalin roibu wrote:
> Dear R users,
> I have a problem. I don't know how to select the top 10 (n) values for each
> classes.
> T
Dear Petr,
On Wed, Jun 27, 2012 11:02:39 am, Petr Savicky wrote:
>
> How large the numbers are? If the bound 3^14 = 4782969 used above apply also
> to the real situation,
> then it is possible to represent the set using a logical vector of this
> length, which has TRUE for the numbers
> present
Dear R users,
I have a problem. I don't know how to select the top 10 (n) values for each
classes.
Thank you!
My data is like this:
row.names proc cls 7271 568,03338 0,5 7270 554,68458 0,5 7269 510,20638
0,5 7268 485,59969 0,5 7267 421,92852 0,5 7272 410,12101 0,5 3414
409,71429 0,5 3452 4
I am trying to get statistics of prediction for binary classification
problems and for various training models with caret. Below is an example
that illustrates my need:
--
library(caret)
# ... Get X and Y for training a binary classification problem. X is i
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