Displaying 20 results from an estimated 2000 matches similar to: "Alphabetical sequence of data along the x-axis in a box plot"
2018 May 03
4
adding overall constraint in optim()
Hi ?
This is giving me a headache. I?m trying to do a relatively simple optimization ? actually trying to approximate the output from the Excel Solver function but at roughly 1000x the speed. ?
The optimization parameters look like this. The only trouble is that I want to add a constraint that sum(wgt.vect)=1, and I can?t figure out how to do that in optim.
Mo.vect <-
2010 Feb 02
2
Subset and plot
Here is a runable program. When I plot Day and Wgt, it graphs all the data
points. All I need is daily.sub1 plotted. I also need each "Tanks" to have
its own col or pch. When I run it with the line with pch, it gives me
nothing.
rm(list=ls())
Trial<-rep(c(1,2),each=12)
Tanks=rep(c("a3","a4","c4","h4"),each=3,2)
Day=rep(c(1:12),2)
2018 May 03
2
adding overall constraint in optim()
Thanks Bert. But everyone on that forum wants to use finance tools rather than general optimization stuff! And I am not optimizing a traditional Markowitz mean-variance problem. Plus, smarter people here. :-)
> On May 3, 2018, at 3:01 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:
>
> You can't -- at least as I read the docs for ?optim (but I'm pretty
> ignorant
2018 May 06
1
adding overall constraint in optim()
Hi Michael,
A few comments
1. To add the constraint sum(wgt.vect=1) you would use the method of
Lagrange multipliers.
What this means is that in addition to the w_i (the components of the
weight variables) you would add an additional variable, call it lambda.
Then you would modify your optim.fun() function to add the term
lambda * (sum(wgt.vect - 1)
2. Are you sure that you have defined
2009 May 31
1
Bug in gmodels CrossTable()?
Is the code below showing a bug in Crosstable()? My expectation was that
the values produced by xtabs were rounded instead of truncated:
library(gmodels)
abc <- c("a", "a", "b", "b", "c", "c")
def <- c("d", "e", "f", "f", "d", "e")
wgt <- c(0.8, 0.6, 0.4, 0.5, 1.4, 1.3)
2018 May 04
0
adding overall constraint in optim()
On Thu, May 3, 2018 at 2:03 PM, Michael Ashton
<m.ashton at enduringinvestments.com> wrote:
> Thanks Bert. But everyone on that forum wants to use finance tools rather than general optimization stuff! And I am not optimizing a traditional Markowitz mean-variance problem. Plus, smarter people here. :-)
>
I'm very confused by these statements. Most of the "finance tools"
2018 May 03
0
adding overall constraint in optim()
You can't -- at least as I read the docs for ?optim (but I'm pretty
ignorant about this, so maybe there's a way to tweak it so you can).
See here: https://cran.r-project.org/web/views/Optimization.html
for other R optimization capabilities.
Also, given your credentials, the r-sig-finance list might be a
better place for you to post your query.
Cheers,
Bert
Bert Gunter
2004 Sep 21
2
Ever see a stata import problem like this?
Greetings Everybody:
I generated a 1.2MB dta file based on the general social survey with
Stata8 for linux. The file can be re-opened with Stata, but when I bring
it into R, it says all the values are missing for most of the variables.
This dataset is called "morgen.dta" and I dropped a copy online in case
you are interested
http://www.ku.edu/~pauljohn/R/morgen.dta
looks like this
2018 May 05
1
adding overall constraint in optim()
Hi,
You can use the projectLinear argument in BB::spg to optimize with linear equality/inequality constraints.
Here is how you implement the constraint that all parameters sum to 1.
require(BB)
spg(par=p0, fn=myFn, project="projectLinear", projectArgs=list(A=matrix(1, 1, length(p0)), b=1, meq=1))
Hope this is helpful,
Ravi
[[alternative HTML version deleted]]
2010 Feb 02
1
Subset and point plot
OK, I need help plotting. I have column headings of Day, Wgt, Foodin, Rep,
Grp and Tanks. Rep=c(1,2,3) and Tanks=c(a1,a2,a3,a4,a5,a6,
c1,c2,c3,c4,c5,c6, h1,h2,h3,h4,h5,h6).
I created a subset where I only would like Rep=2, and Tanks=c(a4,c4,h4) and
would like to graph (points) of Wgt and Day. I would think that I only need
3 colors, but when I run with only 3, only 2 lines show up. When I add
2006 Apr 19
1
Trouble with glm() .... non-integer #successes in a binomial glm
Hi R-people:
When I use the command to fit a model with an intercept, only:
glm ( formula=haspdata ~ 1, data=dat, family=binomial, weights=
dat$hy.wgt.s, subset=(dat$haspdat0!=3) )
I get the message:
Warning message:
non-integer #successes in a binomial glm! in: eval(expr, envir, enclos)
Does anyone know what this means?? The data for this command is listed
below.
Thanks,
Phil Smith
CDC
2009 Nov 14
4
Weighted descriptives by levels of another variables
I've noticed that R has a number of very useful functions for
obtaining descriptive statistics on groups of variables, including
summary {stats}, describe {Hmisc}, and describe {psych}, but none that
I have found is able to provided weighted descriptives of subsets of a
data set (ex. descriptives for both males and females for age, where
accurate results require use of sampling
2004 Sep 10
1
flac worse than shorten ON SOME FILES
had to fix the subject... was getting under my skin!
yeah, could you put up the FLAC version of the
worst track that is less than 20 megs compressed?
(I'll have to grab it with a 56k modem). by worst
I mean the one where shorten beats flac by the most.
also:
1. what version of shorten are you using?
2. what command-line options for flac and shorten
did you use on this track?
thanks,
Josh
2007 Jun 20
9
[Patch] Add NMI Injection and Pending Support in VMX
Currently, Xen does not support injecting an NMI to HVM guest OS. Adding
this
feature is necessary for those softwares which depend on NMI to function
correctly,
such as KDB and oprofile.
The attached patch allows NMI to be injected to guest OS in NMIP capable
platforms.
It also enables to queue an NMI and then inject it as soon as possible.
Signed-off-by: Haitao Shan
2006 Oct 24
2
double invoke of hvm_do_resume
Keir:
Not sure from when, at least now hvm_do_resume is double invoked
in both 1: arch_vmx_do_resume from schedule_tail, and 2)
vmx_asm_do_vmentry of ASM code for both x86 32 & 64 bits. I am wondering
if the #1 is a redundant, can u have a double check?
thx,eddie
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
2010 Aug 18
4
RE: [PATCH 05/15] Nested Virtualization: core
> +
> +/* The exitcode is in native SVM/VMX format. The forced exitcode
> + * is in generic format.
> + */
Introducing a 3rd format of exitcode is over-complicated IMO.
> +enum nestedhvm_vmexits
> +nestedhvm_vcpu_vmexit(struct vcpu *v, struct cpu_user_regs *regs,
> + uint64_t exitcode)
> +{
I doubt about the necessary of this kind of wrapper.
In single layer
2005 Mar 08
1
To convert an adjacency list model into a nested set model
Dear R-help
I am wondering if somebody wrote some code to convert an adjacency list
model into a nested set model.
In principal I want to do the same as John Celko mentioned it here with
SQL:
http://groups.google.co.uk/groups?hl=en&lr=lang_en&selm=8j0n05%24n31%241
%40nnrp1.deja.com
Assume you have a tree structure like this
Albert
/ \
/
2006 Apr 09
4
help with installing ruby
Hi, im new to all this.
I have a laptop running Windows and i was wondering if someone could just
write a brief set of instructions on everything i need to install/set up in
order to get Ruby running.
By the way, could someone explain to me exactly what Ruby is for and what
you can make with it?
Kinda a lot to ask but thanks!
Ed
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2007 May 30
1
Dovecot Authentication Problem (REVISED)
Hello List,
I am back again and I think I am edging closer to getting a solution.
I have done some modifications and now dovecot gives me a different
error message than before....
Here is what I have for the password_query and user_query
password_query = SELECT popbox.cleartext AS password FROM popbox, domain \
WHERE popbox.local_part = 'eddie' AND popbox.domain_name =
2011 Feb 18
2
Re: Xen-devel Digest, Vol 71, Issue 85
Hi all!
Did the nested xen stuff make it into the xen-unstable (4.1-rc1?) tree as
suggested back in January by Tim Deegan?
TIA
________________________________
Date: Fri, 7 Jan 2011 16:01:12 +0000
From: Tim Deegan <Tim.Deegan@citrix.com>
Subject: Re: [Xen-devel] [PATCH 00/12] Nested Virtualization: Overview
To: Christoph Egger <Christoph.Egger@amd.com>
Cc: Keir Fraser