Displaying 20 results from an estimated 2000 matches similar to: "Calling variables dynamically"
2006 Apr 14
0
Calling variables dynamically [Broadcast]
1. The FAQ entry advise you to use a list, instead of using assign() in a
loop. Have you considered that?
2. See ?get.
Andy
From: kewley at eden.rutgers.edu
>
> I've looked in the online documentation for this, but have
> been unable to find an answer. I can name variables
> dynamically, but I cannot call them dynamically. Either a
> direct answer or a reference to an
2010 Jul 21
0
[PATCH] RFC: Advanced Storage Configuration
This patch introduces the concept of an "Advanced Storage Configuration", specifically for automated installs (although it could be hooked into manual install), while preserving the original style of specifying LVs. It accomplishes the following:
* Add an optional AppVG
* Offer new optional LVs - Data2,Swap2 - as part of the new AppVG
* Allows the specification of multiple disks, per VG
2007 Feb 02
1
Working demo of search engine using boolean query.
Lately I was reading many articles about using boolean queries for search
engine but I haven't seen any complete working demo. Therefore I put
together very simple working demo of search engine using boolean query. Feel
free to suggest any performance improvement or error while keeping it as
simple as possible for understanding.
Thanks,
-Kevin Duraj
http://myhealthcare.com
2004 Jun 01
1
swapping with data.frame
Hi there,
I have some data which are convenient to enter as lists. For example:
t1<-list(fname="animal1",testname="hyla",dspkr="left",res1=39.7,res2=15.0)
t2<-list(fname="animal1",testname="bufo",dspkr="left",res1=14.4,res2=56.1)
2012 Jan 04
1
function in R for my exercise
Hi R helpers!
I have a question. I'm trying to create a function for an exercise. Here are
the arguments I should include:
x and y are numeric
z is a name ("plus","minus","multiply","divide")
and swap is logical.
Here is what the function should do:
When z="plus", then x+y is performed and so on for the other z names. It
should give a NA
2013 May 22
0
calcul of the mean in a period of time
Hi,
I guess you meant this:
dat2<- read.table(text="
patient_id????? t???????? scores
1????????????????????? 0??????????????? 1.6
1????????????????????? 1??????????????? 2.6
1????????????????????? 2???????????????? 2.2
1????????????????????? 3???????????????? 1.8
2????????????????????? 0????????????????? 2.3
2?????????????????????? 2???????????????? 2.5
2?????????????????????
2000 Jul 05
1
Tukey.aov with split-plot designs
I am using R 1.1 with Redhat 6.2 and RW 1.001 with Win98 (the upkey doesn't
work on my IBM either as has been previously reported by others).
The function aov doesn't return either the residuals or the residual
degrees of freedom for split-plot designs.
If you use the following code from Baron and Li's "Notes on the use of R
for psycology experiments and questionnaires"
2006 Aug 18
1
multivariate analysis by using lme
Dear R users,
I have a data structure as follows:
id two res1 res2 c1 c2 inter
1 -0.786093166 1 0 1 2 6
3 -0.308495749 1 0 0 1 2
5 -0.738033048 1 0 0 0 1
7 -0.52176252 1 0
2013 Apr 29
1
how to add new rows in a dataframe?
Hi,
dat1<- read.table(text="
id??????????????? t???????????????????? scores
2???????????????? 0??????????????????????? 1.2
2???????????????? 2???????????????????????? 2.3
2???????????????? 3??????????????????????? 3.6
2???????????????? 4??????????????????????? 5.6
2???????????????? 6??????????????????????? 7.8
3???????????????? 0??????????????????????? 1.6
3????????????????
1997 Nov 10
2
R-alpha: loop speed
I noticed Doug only circulated the following on S-news, but it may be of
interest to R users who don't follow S-news. His findings are certainly
consistent with my own, where my problems often force me into the
element by element type of situation.
Paul Gilbert
_______
At the risk of beating this example to death, I went back and compared
the execution time for the element-by-element method
2010 Oct 17
0
Help on choosing the appropriate analysis method
Dear R-help,
I'd like ask for your opinion on choosing the "right" strategy for a
particular dataset.
We conducted 24-hour electric field measurements on 90 subjects. They
are grouped by job (2 categories) and location (3 categories). There are
four exposure metrics assigned to each subject.
An excerpt from the data:
n job location M OA UE all
0 job1 dist_200 0.297 0.072 0.171
2010 Jul 20
1
p-values pvclust maximum distance measure
Hi,
I am new to clustering and was wondering why pvclust using "maximum"
as distance measure nearly always results in p-values above 95%.
I wrote an example programme which demonstrates this effect. I
uploaded a PDF showing the results
Here is the code which produces the PDF file:
-------------------------------------------------------------------------------------
s <-
2011 Apr 12
1
question about optim
Dear R-users,
I would like to use optim( ) to minimize a function which depends on 4 parameters: 2 vectors, a scalar, and a matrix.
And I have a hard to define the parameters at the beginning of the function, and then to call optim. Indeed, all the examples I have seen dont treat cases where parameters are not all real.
Here is my code, it doesnt work but its just to show you where is exactly my
2013 Mar 10
0
max row
HI,
Using
c11<- 0.01
c12<- 0.01
c1<- 0.10
c2<- 0.10
One possible problem is that:
dim(res5)
#[1] 513? 20
res6<-aggregate(.~m1+n1+m+n,data=res5[,c(1:6,9:12,21:24)] ,max)
#Error in `[.data.frame`(res5, , c(1:6, 9:12, 21:24)) :
?# undefined columns selected
A.K.
________________________________
From: Joanna Zhang <zjoanna2013 at gmail.com>
To: arun <smartpink111 at
2007 Nov 06
0
strange `nls' behaviour
dear list,
I stumbled over the follwing strange behaviour/error when
using `nls' which I'm tempted (despite the implied "dangers")
to call a bug:
I've written a driver for `nls' which allows specifying the
model and the data vectors using arbitrary symbols.
these are internally mapped to consistent names, which
poses a slight complication when using `deriv' to
2008 Jul 25
0
nlminb--lower bound for parameters are dependent on each others
Hello
I'm trying to solve two sets of equations (each set has four equations and
all of them share common parameters) with nlminb procedure. I
minimize one set and use their parameters as initial values of other set,
repeating this until their parameters become very close to each other.
I have several parameters (say,param1, param2) and their constraints are
given as inequality and depend
2013 Mar 05
0
chisq.test
If you wanted to do a t.test
res1<-do.call(cbind,lapply(seq_len(nrow(m)),function(i) do.call(rbind,lapply(split(rbind(m[i,-1],n),1:nrow(rbind(m[i,-1],n))), function(x) {x1<- rbind(x,m[i,-1]); t.test(x1[1,],x1[2,])$p.value}))))
?res2<-do.call(cbind,lapply(seq_len(ncol(res1)),function(i) c(c(tail(res1[seq(1,i,1),i],-1),1),res1[-c(1:i),i])))
?attr(res2,"dimnames")<-NULL
?res2
2013 Apr 14
1
possible loop problem
Hi,
It would be better if you provided the output of dput(dataset).? I am not sure about the structure of your dataset.
Just from reading the data as is shown.
dat1<- read.table(text="
separator,tissID
>,>,2
,2,1
,6,5
,11,13
>,>,4
,4,9
,6,2
,7,3
,21,1
,23,58
,25,9
,26,4
>,>,11
,1,12
>,>,21
,4,1
,11,3
2007 Sep 25
0
non-linear fitting (nls) and confidence limits
dear list members,
my question concerns computation of confidence intervals in nonlinear
fits with `nls' when weigthing the fit. the seemingly correct procedure
does not work as (I) expected. I'm posting this here since: (A) the
problem might suggest a modification to the `m' component in the return
argument of `nls' (making this post formally OK for this list) and (B) I
got no
2005 Jul 19
1
initial points for arms in package HI
Dear R-users
I have a problem choosing initial points for the function arms()
in the package HI
I intend to implement a Gibbs sampler and one of my conditional
distributions is nonstandard and not logconcave.
Therefore I'd like to use arms.
But there seem to be a strong influence of the initial point
y.start. To show the effect I constructed a demonstration
example. It is reproducible