Displaying 20 results from an estimated 20000 matches similar to: "Converting R script to Matlab"
2024 Feb 27
2
[External] converting MATLAB -> R | element-wise operation
> t(t(NN)/lambda)
[,1] [,2] [,3]
[1,] 0.5 0.6666667 0.75
[2,] 2.0 1.6666667 1.50
>
R matrices are column-based. MATLAB matrices are row-based.
> On Feb 27, 2024, at 14:54, Evan Cooch <evan.cooch at gmail.com> wrote:
>
> So, trying to convert a very long, somewhat technical bit of lin alg
> MATLAB code to R. Most of it working, but raninto a stumbling block
2012 Dec 24
1
R and Matlab
Hi,
How can I call R functions or Package in MatLab?
Is there any way?
Thanks
Regards
Ranginkaman
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2024 Feb 27
4
converting MATLAB -> R | element-wise operation
So, trying to convert a very long, somewhat technical bit of lin alg
MATLAB code to R. Most of it working, but raninto a stumbling block that
is probaably simple enough for someone to explain.
Basically, trying to 'line up' MATLAB results from an element-wise
division of a matrix by a vector with R output.
Here is a simplified version of the MATLAB code I'm translating:
NN = [1,
2008 Mar 17
3
driving R from MATLAB
I am trying to use R functions from my MATLAB code using a DCOM server.
I am working under Windows XP.
While I mange to run basic functions and run them using scripts, when I
try a more complicated set of functions I fail.
I am trying to perform survival analysis, using Surv
Surv(recruTime,recur)
Surv creates a somewhat complex output and I get the response
Problem evaluating command
2024 Feb 27
2
converting MATLAB -> R | element-wise operation
Why anything but sweep?
The fundamental data type in Matlab is a matrix... they don't have vectors, they have Nx1 matrices and 1xM matrices.
Vectors don't have any concept of "row" vs. "column". Straight division is always elementwise with recycling as needed, and matrices are really vectors in row-major order:
1 2 3
4 5 6
is really
1 4 2 5 3 6
and when you do
2005 Jun 08
2
Converting code from MATLAB to R
Hi,
I'm having trouble converting code from MATLAB to R; I want to find the
equivalence to MATLAB's function 'fsolve'. I've tried 'nlm', on the
squared argument, in R but i did not get the same results.
Thankful if helped.
Best regards,
Martin Englund
------------------------------------------------------------------------------
This e-mail and any attachment may
2010 Feb 15
3
executable R script under xp (to avoid migration toward Matlab or C++)
Hello,
I discovered R two years ago and thanks to the R-community I managed to
write some scripts to analyze my data stored in mysql databases.
The only problem is that I am the only one using R in the lab. Colleagues
mainly use Matlab (but not with mysql, only with text files) but regularly
come to me to get data treated with R-scripts !!!.
To allow the use of my scripts by other people, my
2024 Feb 28
2
converting MATLAB -> R | element-wise operation
On Tue, 27 Feb 2024 13:51:25 -0800
Jeff Newmiller via R-help <r-help at r-project.org> wrote:
> The fundamental data type in Matlab is a matrix... they don't have
> vectors, they have Nx1 matrices and 1xM matrices.
Also known as column vectors and row vectors. :)
> Vectors don't have any concept of "row" vs. "column".
They do in (numerical) linear
2011 Jul 17
3
How to convert number (matlab) to date
Hello
I am new to R and I need to convert some dates (numeric format by matlab) to actual dates in R.
For instance,
Matlab -> 730456 -> >> datestr(730456)
ans =
02-Dec-1999
R -
> library(zoo)
> as.Date(730456)
[1] "3969-12-03"
I don't not mind the output format but it needs to be right.
Many thanks
Ed
2006 Dec 30
2
Evaluating Entire Matlab code at a time
Hi.
On 12/30/06, Bhanu Kalyan.K <kalyansikha at yahoo.com> wrote:
> Dear Mr.Bengtsson,
>
> The steps you have suggested are working for single lines of matlab
> statements. But, as i mentioned earlier, If i want to see the output of an
> entire matlab code (say swissroll.m) then you suggested me to do
> res <- evaluate(matlab, "swissroll").
> When i did
2006 Dec 20
1
R.matlab question
Does anyone know how to solve this question about R.matlab?
I am in windowsXP, my matlab is matlab 7.0.0 19920(R14)
thanks,
Aimin
> matlab <- Matlab(host="localhost", port=9998)
> if (!open(matlab)) throw("Matlab server is not running: waited 30 seconds.")
Error in list("throw("Matlab server is not running: waited 30 seconds.")" =
2006 Dec 17
1
Start Matlab server in R 2.4.0
In order to start matlab server in R , I using the following commands
getwd()
setwd("D:\R_matlab")
install.packages("R.oo")
install.packages("R.matlab")
install.packages("R.utils")
library(R.matlab)
Matlab$startServer()
a minimized MATLAB Command Window come out,
but I can't make this window become larger. Does anyone know why?
I type
2007 Nov 17
3
R and reading matlab compressed files
Is there any way to read these files (standard .mat files, created by
matlab version 7 onwards are compressed)? I know that R.matlab doesn't
read them (it even says in the file MatlabServer.m "Matlab v7 saves
compressed files, which is not recognized by R.matlab's readMat()" (lines
47-8)).
I know I should be able to make R call Matlab and transfer data (not that
I managed to
2012 Jul 02
1
error to convert a Compute A^-1 B from Matlab to R using solve(A, B)
Dear Researchers,
I need to convert the following equation in R from Matlab
a = [x y ones(size(x))];
b = [-(x.^2+y.^2)];
a\b
ans =
-9.9981
-16.4966
-7.6646
my solution in R is:
a = cbind(x,y,rep(1,length(x)))
b = cbind(-(x^2+y^2))
> head(a)
x y
[1,] 14.45319 5.065726 1
[2,] 14.99478 5.173893 1
[3,] 14.64158 5.616916 1
[4,] 14.61803 6.624069 1
[5,] 14.19997
2010 Aug 27
8
R.matlab package help
Hi,all
I have a problem running R.matlab package
(under 2.10.1 version). I can set up the matlab server under local
machine(run the MatlabServer.m), "
And I can use setVariable and evaluate matlab functions in R. But when I ask
Matlab to send the value back to R using getVariable function it
always returns an error:
"
??? Error: A MATLAB string constant is not
2007 Apr 10
2
Matlab import
Dear R-Experts,
here again a question concerning matlab. With the command "matrixM=[1 2
3;4 5 6]" a matrix under Matlab was constructed. It was than stored with
the command "save('matrixM.txt','matrixM')".
Now I tried to import the data in R with the help of the command
"Z=matrix(scan("Z:/Software/R-Programme/matrixM.txt"))"
An error
2008 Mar 26
2
Moving data between R and Matlab back and forth?
Hi to the list,
I am trying to find a way to painlessly move structured data back and
forth between R and Matlab (also Octave). For this purpose I found the
R.matlab package great help. I wish to use a Matlab -v6 MAT file as an
intermediary format, because it is well read by both Matlab and
Octave. It is also well read by 'readMat' function in R.matlab
package, but that is where I run
2003 Apr 03
2
Matrix eigenvectors in R and MatLab
Dear R-listers
Is there anyone who knows why I get different eigenvectors when I run
MatLab and R? I run both programs in Windows Me. Can I make R to produce
the same vectors as MatLab?
#R Matrix
PA9900<-c(11/24 ,10/53 ,0/1 ,0/1 ,29/43 ,1/24 ,27/53 ,0/1 ,0/1 ,13/43
,14/24 ,178/53 ,146/244 ,17/23 ,15/43 ,2/24 ,4/53 ,0/1 ,2/23 ,2/43 ,4/24
,58/53 ,26/244 ,0/1 ,5/43)
#R-syntax
2008 Nov 02
2
R CMD check with Matlab and perl?
Hi, All:
How might one test Matlab and perl code during "R CMD check"?
I ask for two reasons: First, the "fda" package exists in both R
and Matlab, and it would help if we could run test examples in Matlab as
part of "R CMD check". I tried "R.matlab", but could not get it to work
in that context.
Second, I have professional
2009 Mar 03
2
R - MATLAB apply like function
Dear all,
I very often use the R function "apply", for speedup purposes. I am now also using MATLAB, and would like to use the same kind of function.
I have already asked MATLAB people, and the answer is : "vectorize"... but of course, this is not always possible. So, instead of using
a FOR loop all the time, I tried using the bsxfun. So you R people, who might also use MATLAB,