Displaying 20 results from an estimated 20000 matches similar to: "solve 2 var problem"
2004 Nov 09
1
email result as attachement
Hi,
I??d like to know if it's possible to mail a file (image generated with R) in
attachments a similar to bug.report
Thanks in advance.
TEMANNI Ramzi
PhD Student
Lim&Bio
http://www.limbio-paris13.org
UFR de Sant??, M??decine et Biologie Humaine (SMBH)
L??onard de Vinci 74, rue Marcel Cachin
93017 Bobigny Cedex
France.
T??l : 01.48.38.73.07
T??l : 06.21.43.27.59
temanni.ramzi at free.fr
2011 Jul 04
1
writeLines + foreach/doMC
Hi
I'm processing sequencing data trying to collapsing the locations of each
unique sequence and write the results to a file (as storing that in a table
will require 10GB mem at least)
so I wrote a function that, given a sequence id, provide the needed line to
be stored
library(doMC) # load library
registerDoMC(12) # assign the Number of CPU
2004 May 11
2
bilinear and non linear
Dear all,
there are R packages able to simulate or estimate bilinear model for time
series?
I know it is an open problem, but do exist something for very simplified
bilinear models?
Alternatively, what kinfd of non linear time series models are performed
in R?
If R is not able, could someone suggest me for some commercial softwares
to deal with bilinear models?
i'm afraid of a negative
2011 Jul 07
2
How do I overlay two trellis plots of lme fitted lines produced by plot.augPred?
Hello,
I want to use lme to fit two (or more) models, and then compare the fits
on each individual. I know how to write my own code to do this (for each
individual, plot the raw data, followed by lines() to plot each fitted
curve) but I would like to use plot(augPred(... as it produces a nice
trellis plot. I thought I could do this with par(new=T) but it does not
seem to work.
2007 Mar 01
4
R File IO Slow?
Is R file IO slow in general or am I missing
something? It takes me 5 minutes to do a load(MYFILE)
where MYFILE is a 27 MB Rdata file. Is there any way
to speed this up?
The one idea I have is having R call a C or Perl
routine, reading the file in that language, converting
the data in to R objects, then sending them back into
R. This is more work that I want to do, however, in
loading Rdata
2002 Oct 10
2
Samba+MYOB
Hello all,
We are experiencing problems using MYOB Premier V6.0.2 on Windows 2000
computers SP3, with the data file residing on shared drive on Linux (Redhat
7.2) file server running Samba Version 2.2.1a and kernel 2.4.9-34.
The MYOB Tech support have told me that it is a problem with our network but
could not give me any hints where the problem might be.
The MYOB database has been corrupted
2003 Apr 10
2
New problem
Hi all, and thx a lot for your answers,
in fact i know that R deals with logical numbers 0 and 1 the same way like TRUE and FALSE but my problem is in fact with C language.
I have done an interface with C and my first problem was with float variables, but this warning doesn't appear everytime and really i don't know the problem with R:
"Warning message:
DLL attempted to change
2004 Aug 24
2
stem() bug?
Is the following a bug with stem() or is there something else that I am
missing? I ran stem() on the vector x below and got stem(x-10) instead of
stem(x). If I subtract 1 from x, I get a correct answer. If I add 1 to x, I
still get a wrong answer. If I add 10 to x, I get a correct answer. I'm not
sure what to make of this, other than to think it is a bug.
Can anyone tell me if this is a bug?
2018 Jan 12
0
application of R
Because many technical people need to accomplish statistical data analysis with computers that depend on existing algorithms applied in new ways, or with new algorithms that are not implemented by commercial software. Often such people have no desire to provide step-by-step support of their tools for every user of their code indefinitely, so developing commercial software for others is less
2003 Jun 23
2
Problem with installation under R 1.7.1 and unzip
Dear all,
i was working under R 1.6.2 but i wanted to install bioconductor under WinXP, and because R 1.7.1 contains the TclTk package and automatic installation of bioconductor packages, so i install it.
Everything is fine except this message which appear after the installation of packages.
"> local({a<- CRAN.packages(CRAN=getOption("BIOC"))
+
2018 Jan 12
1
application of R
Oh I see thank you very much now I understand. So for me as I am considered an intermediate in R and also C++ what kind of programming language I could take up and learn to make a commercial statistical software ? Any advices as well ?
> On 12 Jan 2018, at 12:40 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote:
>
> Because many technical people need to accomplish statistical
2008 May 15
1
logistic transformation using nlminb
Dear all,
I want to find the optimal values of a vector, x (with 6 elements)
say, satisfying the following conditions:
1. for all x>=0
2. sum(x)=1
3. x[5]<=0.5 and x[6]<=0.5
For the minimisation I'm using nlminb and to satisfy the first 2
conditions the logistic transformation is used with box constraints
for condition 3. However, I don't seem to be able to get the values x
2018 Jan 12
4
application of R
Thank you very much this really helped me a lot .
So actually why would people learn R(other than personal interests ) if you can't really build anything that can be sold ? I'm sorry if I'm asking bad questions
> On 12 Jan 2018, at 4:43 AM, Marc Schwartz <marc_schwartz at me.com> wrote:
>
>
>
>> On Jan 11, 2018, at 2:15 PM, muhammad ramzi <mramzi43 at
2003 Apr 17
1
C function and Windows XP
Hi dear R developer, we are trying to build DLL files using Microsoft Visua=
l C++. As stated in readme.packages we have to build first the import libra=
ry Rdll.lib with the command: lib(def:R.exp/out:Rdll.lib. However, this com=
mand gives 2155 errors due to unresolved external symbols (ATTRIB to zlibVe=
rsion) in R.exp.Could anybody tell me if something is missing in the comman=
d line or
2003 Mar 26
1
Solving equations
Hello,
Does somebody knows if there exists a function which solves a set of
equation, say f(vars),
for the variables vars (similar to Solve in mathematica).
The functions I am considering are of the form f(t) ~ A*exp(B*t), where
A and B are matrices.
Thanks Thomas
2003 Apr 10
6
Transforming matrix
hi everybody,
anyone knows how we can transform a binary matrix with TRUE and FALSE to 0 and 1 without looping?
Thx
---------------------------------
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2011 Apr 12
5
B %*% t(B) = R , then solve for B
Hello,..
Apologies for the newbie question but...
I have a matrix R, and I know that *B %*% t(b) = R*
*I'm trying to solve for B *(aka. 'factoring the correlation matrix' I
think)
Please help!
I've read that 'to solve for B we define the eigenvalues of R and then
apply the techniques of Principal Component Analysis'
This made me reach for princomp() but now I'm
2008 Mar 05
2
matrix inversion using solve() and matrices containing large/small values
Hello
I've stumbled upon a problem for inversion of a matrix with large values,
and I haven't found a solution yet... I wondered if someone could give a
hand. (It is about automatic optimisation of a calibration process, which
involves the inverse of the information matrix)
code:
*********************
> macht=0.8698965
> coeff=1.106836*10^(-8)
>
2000 Feb 14
2
Error in the inverse of a diagonal matrix?
I?m new to R so maybe this issue has been asked before and I still could not read the complete set of past messages sent to the list.
I found a weird behabiour that I will explain with a simple example. Lets consider the following block of commands:
> x <- diag(c(1,4,10))
> x
[,1] [,2] [,3]
[1,] 1 0 0
[2,] 0 4 0
[3,] 0 0 10
> invx <- x^-1
> invx
2018 Jan 11
0
application of R
> On Jan 11, 2018, at 2:15 PM, muhammad ramzi <mramzi43 at gmail.com> wrote:
>
> hello guys,
>
> i am a petroleum engineering student and i will be having a long semester
> break and currently i am learning THE R PROGRAMMING LANGUAGE just out of
> interest. I would just like to know if i am able to design a business
> analysis software using R as in create a type of