Displaying 20 results from an estimated 4000 matches similar to: "non-negative least squares?"
2001 Nov 20
0
Summary: non-negative least squares
Thank you Brian Ripley, Gardar Johannesson, and Marcel Wolbers for your
prompt
and friendly help! I will share any further learnings as I move through
these suggestions. -Bob Abugov
Brian Ripley wrote:
I just use optim() on the sum of squares with non-negativity constraints.
That did not exist in 1999.
Gardar Johannesson wrote:
You can always just use the quadratic programing library in R
2006 Jul 14
1
SAS to R translator for particular procedures
Dear /Bill Paterson,
while trying to find a way to convert SAS code into R, I came across
your one time e-mail message
(http://www.ens.gu.edu.au/robertk/R/help/99b/0908.html). I'd appreciate
to learn if anything came out of this, or any suggestions.
Thank you in advance,
Mehmet Somel
/
--
Mehmet Somel
Max Planck Institute for Evolutionary Anthropology
Department of Evolutionary
2004 Mar 01
1
non-negative least-squares
Hi all,
I am trying to do an inversion of electromagnetic data with non-negative
least squares method (Tikhonov regularisation) and have got it
programmed in S-Plus. However I am trying to move all my scripts from
S-Plus to R.
Is there an equivalent to nnls.fit in R?
I think this can be done with pcls? Right?
S-Plus script: A, L and data are matrices, lambda is a vector of
possible lambda
2000 Feb 08
1
gnome support failure (libglade error on debian)
Hi,
I'm running debian - upgraded fully to potato at the start of the
freeze and added latest libgnome-dev before configuring.
I tried compiling with gnome support with
/usr/local/R/R-0.99.0/configure --with-gnome
and got the following output:
checking for gnome-config... /usr/bin/gnome-config
checking if /usr/bin/gnome-config works... yes
checking for orbit-config...
2006 Jul 11
3
least square fit with non-negativity constraints for absorption spectra fitting
I would really appreciate it if someone can give suggestions on how to
do spectra fitting in R using ordinary least square fitting and
non-negativity constraints. The lm() function works well for ordinary
least square fitting, but how to specify non-negativity constraints? It
wouldn't make sense if the fitting coefficients coming out as negative
in absorption spectra deconvolution.
Thanks.
2018 Apr 11
7
[Bug 105977] New: Samsung screen replacement in a Dell laptop brings corrupted display
https://bugs.freedesktop.org/show_bug.cgi?id=105977
Bug ID: 105977
Summary: Samsung screen replacement in a Dell laptop brings
corrupted display
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: critical
Priority: medium
1997 Jul 31
1
R-beta: R-help archives in html format
Archives of the r-help mailing list are now available in html format at:
http://www.ens.gu.edu.au/robertk/rhelp/about.htm
The archives include R-help and the previous R-testers lists back to March
1996.
----
Robert King, || The Society for the Preservation of Tithesis commends your
Environmental|| ebriated and scrutable use of "delible" and "defatigable",
Science, ||
2000 Dec 07
1
Reversing x-axis
Dear all,
I'm making a system to create a star-chart, and I have encountered one of
the intuitive and clearly thoughtful conventions that are so common in
astronomy :-J... Well, the point being, I have to reverse the x-axis.
I figured, I might just set xlim=rev(range(x)). Do e.g.
> x <- 0:5
> y <- (0:5)^3
> plot(x, y)
> plot(x, y, xlim=rev(range(x)))
The problem is that here
1999 Nov 08
2
archive of the mailing list?
Is there an archive of the mailing list?
If so could someone please give the site address?
Jan
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1999 Jun 15
3
r help archives
Where are the archives of r-help kept, please?
Jonathan
--
Dr. Jonathan Myles e-mail:jonathan.myles at mrc-bsu.cam.ac.uk
MRC Biostatistics Unit Tel. 01223 330371
Institute of Public Health FAX 01223 330388
University Forvie Site
Robinson Way
CAMBRIDGE
CB2 2SR
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r-help mailing list --
2012 Jan 04
0
Non Negative Least Squares Regression with nnls
Hello R experts,
I have two questions related to the nnls library (http://www.inside-r.org/packages/cran/nnls), and more broadly to linear regression with positive coefficients. Sample code is below the Qs.
Q1: Regular regression (with lm) gives me the significance of each variable. How do I get variable significance with nnls? If there's no ready function, any easy way to manually derive
2006 Feb 02
0
Computing s^2 for non-negative least squares.
I know this isn't 100% an R question, but... I have successfully used optim to compute a non-negative regression and would like to compute standard errors for the non-negative coefficients. How do I do this? Also, are there any references where I can read up on the theory. Thanks.
--Brett
[[alternative HTML version deleted]]
2001 Jun 08
2
Will R run in Batch mode?
A quick newbie question: Can R be run in batch mode from the command
line?I'd like to use input files and get output files. If so, where can I
find the documentation? help(batch) doesn't help.
Thanks!
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info",
1998 Oct 21
2
R, SuSe and readline
Hello folks,
I can't make R use the GNU-Readline-library.
However,
- I have run configure with --enable-readline and
- configure *has found* the library.
My Linux distribution is SuSe, July 1998. I'm using
Kernel 2.0.25. I was told by Douglas Bates (r-devel),
that this problem between R and (probably) SuSe was
discussed before on this list.
Can someone tell me how I can make R use
2000 Nov 14
1
3 D bar graph
Anybody who did a 3D bar Graph in r?
Thanks
Fairouz Makhlouf
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
1999 Jan 04
0
test
test
----
Robert King, Australian Environmental Studies, Griffith University, Australia
3875 6677 Robert.King at mailbox.gu.edu.au http://www.ens.gu.edu.au/robertk/
When all's said and done,
a lot more is said than done.
1999 Jun 11
1
Segmentation fault (Debian slink+libc6 2.1)
Hi,
I've just upgraded my debian machine to the 2.1 libc6 libraries, and I
started getting segmentation faults with R. I tried re-compiling and got
the same problem. I checked with the dependencies for the binary package,
and I have all the required libraries.
Any ideas?
Thanks,
Robert.
----
Robert King, Australian Environmental Studies, Griffith University, Australia
3875 6677
1999 Sep 01
1
What happened to error()
Apologies for the dumb question, but what happened to error()?
How do I fail out of a function?
----
Robert King, Australian Environmental Studies, Griffith University, Australia
3875 6677 Robert.King at mailbox.gu.edu.au http://www.ens.gu.edu.au/robertk/
"It might be in the basement,
I'll go upstairs and check .." Escher
1999 Dec 21
0
HTML archives will be down
Hi,
As a precaution against all the computers here (Griffith University,
Australia) going down with the Y2K bug, all the computers are going down.
The site that the R archives are on will be down for a number of days over
the new year, and the machine which actually creates the HTML archive
files will be down for longer.
Apologies for the disruption.
----
Robert King, Australian Environmental
1999 Nov 16
2
including NAs in a table
I have two factors, WC and WD. If I want a table including all the values
of each factor, including NAs, I can get a table by going:
table(as.character(WC),as.character(WD),exclude=c())
Is there an easier way?
I guess this is a feature request for table()
Thanks,
Robert.
----
Robert King, Australian Environmental Studies, Griffith University, Australia
3875 6677 Robert.King at