Hello Lorenzo, Try to locate related R packages from here:
http://cran.r-project.org/web/views/MedicalImaging.html
On 14 October 2013 22:23, Lorenzo Isella lorenzo.ise...@gmail.com wrote:
Dear All,
For a project I am given a set of images. They represent either healthy or
tumoral tissue, but
On 29 September 2013 19:17, Aya Anas aa...@feps.edu.eg wrote:
doesn't make sense at all. I got parameters that don't satisfy the
constraint. In addition, when i substituted with the resulting parameters
Maybe you have issues with your interpretation of the usage of the package and
expected
On 26 September 2013 11:30, Rainer M Krug rai...@krugs.de wrote:
Why doesn't return me 0?
It isn't R question at all. You might want to read about representing
real numbers in a computer using floating point
http://en.wikipedia.org/wiki/Floating_point
If you want more precision for some reason,
R is weakly typed language. I have asked similar question previously:
http://r.789695.n4.nabble.com/count-appearence-of-zero-in-a-vector-td4654591.html
It is advised to me to use S4 classes, if you want to enforce type
checking automatically. Excellent
reference on this is by the ACM award
Hello Sebastian,
I think you may need to use tensorA package. You can define different
indices and use Einstein or Reimann summation convention.
Grüße,
Mehmet
On 23 August 2013 15:14, Sebastian Hersberger
sebastian.hersber...@unibas.ch wrote:
Hi all
I have a short question relating to the
Dear Graham,
On 16 June 2013 02:08, Graham McDannel graham.mcdan...@gmail.com wrote:
I am attempting to optimize a function I have developed using optim.
I am getting the below error message:
Error in n 1: 'n' is missing
I suspect a function requires an argument named n, and you
didn't
On 16 June 2013 17:31, Gaurav Sehrawat igauravsehra...@gmail.com wrote:
fine the shared library path in it. And how would i
verify it has been loaded. The library is dynamic i have check using
ldd fpmpi.so
have you tried setting environment variable LD_LIBRARY_PATH:
On 30 May 2013 13:44, Neal Becker ndbeck...@gmail.com wrote:
I thought the topic of this article might be of interest here:
https://groups.google.com/forum/?fromgroups#!topic/julia-dev/GAdcYzmibyo
I think Julia has great potential, and can, unlike Matlab, rid itself of its
tunnel vision on
You may want to use C++ instead using Rcpp which string handling would
be easier:
http://gallery.rcpp.org/articles/strings_with_rcpp/
On 10 May 2013 15:51, cgenolin cgeno...@u-paris10.fr wrote:
Hi the list,
I include some C code in a R function using .C. The argument is a character.
I find
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 ribonucle...@gmail.com wrote:
Hi - I am having
Hello,
For the record there are Water Models using effective pair potentials:
J. Chem. Phys. 114, 6720 (2001)
http://dx.doi.org/10.1063/1.1356002
Best,
-m
On 9 February 2013 14:45, David van der Spoel sp...@xray.bmc.uu.se wrote:
On 2013-02-09 14:21, Joinforfun Doe wrote:
Hello,
I am
You can use system.file to fine the package root, then
data file path relative to this.
For example
system.file(package = stats) # The root of package 'stats'
See ?system.file
On 6 February 2013 22:02, David Winsemius dwinsem...@comcast.net wrote:
On Feb 4, 2013, at 11:37 AM, Rich Shepard
Hello Sarah,
You may want to use a package instead of trying to implement those
data structures. For example:
http://www.bioconductor.org/packages/release/bioc/html/graph.html
Best,
-m
On 29 January 2013 11:22, Sarah Goslee sarah.gos...@gmail.com wrote:
In R, lists are used for that. See ?list
This an alternating way of doing it using a list if you know the
argument names in
the function definition i.e. ?formals and ?alist, But would change
the default values of the function. Probably not you wanted.
f - function(x,y,z) x+y+z
args-alist(x=5,y=6,z=7)
formals(f) - args
f()
[1] 18
Probably formatR/knitr is more robust but this one has an option for S
http://hilite.me/
-m
On 25 January 2013 02:37, C W tmrs...@gmail.com wrote:
I ran across this page for C, Java, etc. No R.
http://pastebin.com/
It looks similar and more than what I was looking for, just saying.
Mike
Not sure what is your exact requirement but you can compute marginals
and conditional probabilities using 'prob' package of Prof. Kerns.
On 25 January 2013 22:15, Rui Barradas ruipbarra...@sapo.pt wrote:
Hello,
You need to be much more specific. What do you know about the distributions
of X
On 17 January 2013 07:03, Ibrahim Sobh im_s...@hotmail.com wrote:
Dear
I have changed some code in R file inside the stats package (dendrogram.R).
Now I wan to test and run the stats package with the new updated code, what
should I do in detail?
For testing the simplest thing you can do
On 14 January 2013 15:08, Cyrus Shaoul cyrus.sha...@uni-tuebingen.de wrote:
La.svd
Dear Cyrus,
Have you tried running La.svd ; LAPACK only version (without R) via
C/C++ or Fortran code? After all it can be a
LAPACK issue and R-team has no control on that.
Best,
-m
Similar issue with URLs:
yesWeCan -
http://upload.wikimedia.org/wikipedia/commons/9/9d/Barack_Obama.jpg;
url(yesWeCan)
description
http://upload.wikimedia.org/wikipedia/commons/9/9d/Barack_Obama.jpg;
On 14 January 2013 18:56, Prof Brian Ripley rip...@stats.ox.ac.uk wrote:
On 14/01/2013 16:26, Suzen, Mehmet wrote:
Similar issue with URLs:
Not a similar issue at all: a URL is not a file. That most functions in R
itself open connections including URLs does not mean that contributed
On 10 January 2013 01:04, Yao He yao.h.1...@gmail.com wrote:
In fact I want to calculate the gene frequency of each SNP.
Why don't you use bioconductor for your analysis instead of trying to
develop by your own? For example:
On 10 January 2013 15:04, jt...@mappi.helsinki.fi wrote:
Hi,
I have two variables x and y and the functional relationship between x and y
is like: y=x^2+log(x). My question is that is it possible to apply some
method to reconstruct the functional form based on the training data that is
On 9 January 2013 18:59, Ramiro Barrantes ram...@precisionbioassay.com wrote:
I am working on a web system (php) that uses R in the backend, and we need
some basic fast encryption/decryption for the underlying mysql database that
can be used by both R AND php. It does not need to be
has a
counterpart on php or has suggestions about the situation. Sorry for the
confusion in my question.
Thank you,
Ramiro
From: mehmet.su...@gmail.com [mehmet.su...@gmail.com] on behalf of Suzen,
Mehmet [msu...@gmail.com]
Sent: Wednesday
Hello Einat,
Have you tried ggbio package's plotGrandLinear from bioconductor?
Best,
-m
On 8 January 2013 20:03, Einat Granot einatgra...@gmail.com wrote:
Hello,
I am trying to create a simple Manhattan plot for a small list of 200 SNPs
spread out in the genome in different genes.
I have
Hey Louis,
There is a book called Biologically Inspired Algorithms for Financial
Modelling by
Brabazon, Anthony and O'Neill, Michael
Also, have a look at R package DEoptim.
Best,
-m
On 7 January 2013 10:10, intertodd louisi...@yahoo.com.au wrote:
Hi ,
Im trying to develop some trading
On 5 January 2013 10:04, peter dalgaard pda...@gmail.com wrote:
So it looks like some assembly is required, but puzzle pieces are available.
Concerning MT940 spec, I don't know who is regulating this. There is
no RFC or similar.
The closest thing I found was from DB:
Hello Rui/Jorge,
This is shorter, and probably needs less memory for large matrices as
you create
an other copy by defining nas:
matrixOp - function(m1, m2, op=`+`) {
rows - min(nrow(m1), nrow(m2))
cols - ncol(m1)
op(m1[1:rows, 1:cols], m2[1:rows, 1:cols])
}
Best,
mem
On 4 January 2013
$double.xmin))
#[1] 6
A.K.
- Original Message -
From: Suzen, Mehmet msu...@gmail.com
To: Hermann Norpois hnorp...@googlemail.com
Cc: R help r-help@r-project.org
Sent: Friday, January 4, 2013 12:27 AM
Subject: Re: [R] count appearence of zero in a vector
Hi Hermann,
You may want
My 2 cents:
AFAIK both which and length are from C compiled code:
http://cran.r-project.org/doc/manuals/r-release/R-ints.html#g_t_002eInternal-vs-_002ePrimitive
so they must be quite efficient ie .Primitive and .Internal. Probably
combination
of this with a pattern in C would be more memory
On 4 January 2013 11:36, Royden Fernandes roydens...@gmail.com wrote:
Hi,
I am able to integrate C++ and R through RInside library. However when I
Questions regarding RInside should go to the rcpp-devel mailing list.
http://lists.r-forge.r-project.org/mailman/listinfo/rcpp-devel
On 4 January 2013 16:53, jim holtman jholt...@gmail.com wrote:
Is performance a concern? How often are you going to do it and what
other parts of your script also take longer? Why are you concerned
about allocating/discarding two vectors?
I think Sam's question was about additional memory
On 4 January 2013 17:47, Bert Gunter gunter.ber...@gene.com wrote:
Inline.
On Fri, Jan 4, 2013 at 7:44 AM, Suzen, Mehmet msu...@gmail.com wrote:
I am always reserved about types and not sure how R auto casting works
internally.
In a large code using many different packages, I think being
Hi Hermann,
You may want to use ?which, to store the index as well (might be handy
in debugging or some other
purposes if zeros has some special meaning) :
test - c(1, 1, 1 , 1 , 1, 1, 2, 1, 1, 1, 0, 2, 0, 1, 1, 0, 0, 0, 1,
1, 1, 0, 1, 2, 1, 1, 1, 1, 1, 1)
length(which(test==0))
But be careful
Hello List,
Are there any R package that can process MT940/942?
Thanks
mem
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
On Jan 2, 2013, at 12:37 PM, Yuan, Rebecca wrote:
I am wondering if there is an efficient way to read SAS data directly in R,
or what would be a better connection between SAS and R if I need to use R to
deal with data achieved from SAS?
You may try foreign and SASxport packages:
On 30 December 2012 20:21, arun smartpink...@yahoo.com wrote:
HI,
I was not aware of the algebraic relationship.
Tx for the explanation.
For the record; the simple example I have shown can be reproduced with
Einstein's summation rule as well. While A and x tensors have
covariant (lower)
On 29 December 2012 20:35, arun smartpink...@yahoo.com wrote:
Is it possible to obtain the same result as X without converting X to R?
What do you mean by the same result? There is a relationship between X and R.
If you express this relationship algebraically, you can get X directly using
Y and
What I had in mind was a tensor multiplication.
I think, using tensor arithmetic for multidimensional arrays looks
more compacts
and efficient (~ 2-3 times). I am guessing that performance will be much more
pronounced for n-D arrays (n3).
# Component Wise
set.seed(14)
On 27 December 2012 08:46, Greg Hooper gregstuarthoo...@gmail.com wrote:
thanks Ben - hmm I think I will use a midi/csv utility
http://www.fourmilab.ch/webtools/midicsv/ and see how that goes. Another
Hi Greg, Yes you are right, It is for wav analysis but as Ben
suggests. Conversion
should not
On 27 December 2012 08:46, Greg Hooper gregstuarthoo...@gmail.com wrote:
thanks Ben - hmm I think I will use a midi/csv utility
http://www.fourmilab.ch/webtools/midicsv/ and see how that goes. Another
Hi Greg, Yes you are right, It is for wav analysis but as Ben
suggests. Conversion
should not
On 27 December 2012 21:23, Ben Bolker bbol...@gmail.com wrote:
On 12-12-27 03:04 PM, Greg Hooper wrote:
it more closely into R I would take the C code and figure out how I
could integrate it into an R package as compiled code with a thin R
wrapper around it. Since the code license is public
You can use environments. Have a look at this this discussion.
http://stackoverflow.com/questions/7439110/what-is-the-difference-between-parent-frame-and-parent-env-in-r-how-do-they
On 27 December 2012 21:38, Sam Steingold s...@gnu.org wrote:
I have the following code:
--8---cut
I think what you are doing is a tensor algebra. You may want to try tensorA:
http://cran.r-project.org/web/packages/tensorA/index.html
On 28 December 2012 06:33, Ranjan Maitra maitra.mbox.igno...@inbox.com wrote:
Any pointers on an efficient way of doing this? I considered using
apply, but was
Hi David,
I suggest you to have a look at packages that can extract data from
sql or nosql databases and graphics. CRAN task views would help:
http://cran.r-project.org/web/views/Graphics.html
The point is there are lots of alternatives. If you would like to use
web-based visualisation d3 is
Hi Greg,
you can try tuneR :
http://cran.r-project.org/web/packages/tuneR/
Best,
-m
On 26 December 2012 22:04, Greg Hooper gregstuarthoo...@gmail.com wrote:
Hi, I have been using Matlab to produce midi files for sonfication and
algorithmic composition projects. I would like to transfer that
Simplest way is the call a system command, using R CMD.
See :http://stackoverflow.com/questions/6695105/call-r-scripts-in-matlab
But there are more complicated solutions are proposed:
http://www.mathworks.co.uk/matlabcentral/fileexchange/5051
This is uses R-(D)-COM
In my opinion most robust
On 14 December 2012 12:13, Suzen, Mehmet su...@acm.org wrote:
On 13 December 2012 23:21, Rui Barradas ruipbarra...@sapo.pt wrote:
But it does, each recursive call will load another copy of the function, and
another copy of the variables used.
In fact, the cost can become quite large since
On 13 December 2012 23:21, Rui Barradas ruipbarra...@sapo.pt wrote:
But it does, each recursive call will load another copy of the function, and
another copy of the variables used.
In fact, the cost can become quite large since everything is loaded in
memory again.
Hope this helps,
Many
On 14 December 2012 13:46, Simon Urbanek simon.urba...@r-project.org wrote:
You may be a bit misinformed about with tail recursion means - it still needs
to evaluate the function for each recursion step, the only difference is that
in
such special case there is no additional information that
Hello List,
I am aware that one can set with recursion depth 'options(expressions
= #)', but it has 500K limit. Why do we have a 500K limit on this?
While some algorithms are only solvable feasibility with recursion
and 500K sounds not too much i.e. graph algorithms
for example dependency trees
On 13 December 2012 17:52, Simon Urbanek simon.urba...@r-project.org wrote:
Because it's far beyond what you can handle without changing a lot of other
things. 500k expressions will require at least about 320Mb of stack (!) in
the eval() chain alone -- compare that to the 8Mb stack size which
dev.cur()
On 12 December 2012 10:45, Williams seanmamus4r...@yahoo.com wrote:
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and
Hello List,
Can you recommend me if odeSolve can handle stiff delay differential equations
with discontinuities? Or any other package?
Best,
-m
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting
You can use, 'sample' function for sampling and may consider using
partition clustering for selecting your regions, see Cluster task view:
http://cran.r-project.org/web/views/Cluster.html
On 4 December 2012 00:53, KoopaTrooper ncoop...@tulane.edu wrote:
I am using package ks() to build 3D
Hello List,
Probably many of you aware of the Julia language
(http://julialang.org/), It is a promising project.
However it seems like R is very slow in their benchmarks. Very
important point they omit, they did not
use R's own JIT ! I had a feeling that R is mistreaded there :)
Also another
There is a book on MC with R:
Introducing Monte Carlo Methods with R by Robert/Casella:
http://www.springer.com/statistics/computational+statistics/book/978-1-4419-1575-7
On 4 December 2012 19:21, Adel ESSAFI adeless...@gmail.com wrote:
Hello,
How can I make a monte carlo simulation on R?
There is a book on MC with R:
Introducing Monte Carlo Methods with R by Robert/Casella:
http://www.springer.com/statistics/computational+statistics/book/978-1-4419-1575-7
On 4 December 2012 19:38, R. Michael Weylandt
michael.weyla...@gmail.com wrote:
replicate(1000, sum(rnorm(50)^2-rchisq(50,
Hi Brandon,
You can try ReacTran package:
cran.r-project.org/web/packages/ReacTran/vignettes/PDE.pdf
Best,
-m
On 3 December 2012 06:49, Brandon Breitling brandonjbreitl...@gmail.com wrote:
I haven't used r in quite a while but would like to get back into it. I
have a problem that I would
Hello Marcus,
Concerning measures of association, have a look at here
http://stackoverflow.com/questions/2557863/measures-of-association-in-r-kendalls-tau-b-and-tau-c
But why do you need logistic regression?
Best,
-m
PS: I think official language is Englisch in diese list.
On Tue, Nov 27,
or write the compute intense part in C and interface it to R.
On Wed, Nov 28, 2012 at 5:45 AM, William Dunlap wdun...@tibco.com wrote:
Or try the filter() function (with convolutional filter rep(1/3,3)).
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
-Original Message-
In my experience, I think h5r is more robust while it is directly
wrapped around the C library and
contains more functionality.
On Tue, Nov 27, 2012 at 4:51 PM, Johann Hibschman jhibsch...@gmail.com wrote:
What is the current best package for manipulating HDF5 data files?
I tried hdf5 a long
If you want to handle a generic case, best thing is to create an R
package. It is
much easier to manage that using source(), if you have lots of
different functionality
and data files. Also look at ?system.file.
On Sat, Nov 24, 2012 at 7:49 AM, Jeff Newmiller
jdnew...@dcn.davis.ca.us wrote:
It
Try this:
http://stat.ethz.ch/R-manual/R-patched/library/utils/html/BATCH.html
On Wed, Nov 21, 2012 at 11:58 AM, R_Antony antony.akk...@ge.com wrote:
Hi,
I have a .R file written many functions into that. My requirement what is,
i need to create a batch file for this.
No idea, how to create
Hello Tania,
You may want to read MCMCpack's paper;
http://www.jstatsoft.org/v42/i09/paper
and one of the best book in the field:
http://www.amazon.com/Markov-Practice-Chapman-Interdisciplinary-Statistics/dp/0412055511
Also look on CRAN view on Bayesian Inference
Best,
-m
On Tue, Nov 20,
you can use RCurl for web connections from Duncan Lang, see its paper:
http://www.omegahat.org/RCurl/RCurlJSS.pdf
getURL there will solve your problem.
On Sun, Nov 18, 2012 at 2:07 AM, veepsirtt veepsi...@gmail.com wrote:
Hi R,
I installed wget and tried to download the file from this
Hi Nick,
Have you tried this:
http://www.bioconductor.org/packages/release/bioc/html/RBGL.html
There is a function there called 'lambdaSets'
Best,
Mehmet
On Thu, Nov 15, 2012 at 10:45 AM, Nick Duncan nickd...@gmail.com wrote:
Dear All,
I would like to extract Lambda Sets from a binary
Use mapply instead
On Fri, Nov 16, 2012 at 5:01 PM, billycorg candi...@gmail.com wrote:
Hi R Users.
I have a simple question on a loop.
The following loop works fine:
r_t=list()
for(i in 1:500)
{
r_t[[i]]=h_t_half[[i]]%*%matrix(*z_t_m*[i,])
}
But indeed I need also that *z_t_m*
On Thu, Nov 15, 2012 at 1:22 PM, Kennedy Bonyo bonyo...@gmail.com wrote:
Is it possible to obtain stock data from live.mystocks.co.ke using R?
Try RCurl
___
R-SIG-Finance@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-sig-finance
It might be a C code wrapped around.
-m
On Thu, Nov 15, 2012 at 8:21 PM, C W tmrs...@gmail.com wrote:
Dear list,
I am trying to look at the function inside a package. I know that
methods() would do the trick, but what if the function is hidden? I have a
problem displaying the hidden
Try Prof. Wilkinson's recent blog entry:
http://darrenjw.wordpress.com/2012/11/10/keeping-r-up-to-date-on-ubuntu-linux/
On Thu, Nov 15, 2012 at 5:14 PM, Karel van Duijvenboden
viera...@gmail.com wrote:
Hello R-help team,
I seek your help (for what is most likely a very simple problem). I'm
On Tue, Nov 6, 2012 at 2:34 AM, Hadley Wickham h.wick...@gmail.com wrote:
On Monday, November 5, 2012, Rolf Turner wrote:
On 06/11/12 09:40, Iurie Malai wrote:
So, R (as a language) can be viewed as an extended S language (S + some
improvements)? And the R environment includes this
On Tue, Oct 23, 2012 at 11:52 PM, Luigi marongiu.lu...@gmail.com wrote:
Any tip on how to proceed?
You may want to do check rocplus package. Its vignette is pretty good.
http://cran.r-project.org/web/packages/rocplus/vignettes/rocplus.pdf
In your case, I think pairwise comparison would be one
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