Hi,
Try:
ls <- vector("list",3)
for (i in 1:3)
{
ls[[i]] <- summary(lm(y[,i]~x[,i]))
}
names(ls) <- paste0("lm",1:3)
A.K.
On Wednesday, May 14, 2014 10:45 AM, yuanzhi <yuanzhi...@usherbrooke.ca> wrote:
Hi, I know all what you said, but it seems that you don't understand my
problem. I am sorry about my poor english level. I know that we can use a
list to store complicated objects. e.g.
x<-cbind(rnorm(10),rnorm(10),rnorm(10))
y<-cbind(rnorm(10),rnorm(10),rnorm(10))
lm1<-summary(lm(y[,1]~x[,1]))
lm2<-summary(lm(y[,2]~x[,2]))
lm3<-summary(lm(y[,3]~x[,3]))
ls<-list(lm1=lm1,lm2=lm2,lm3=lm3)
so the results of linear models are stored in the list "ls", and we can use
ls[[1]] to cite the results of the first linear model. But I want to do this
part
lm1<-summary(lm(y[,1]~x[,1]))
lm2<-summary(lm(y[,2]~x[,2]))
lm3<-summary(lm(y[,3]~x[,3]))
in a loop if I have much more than 3 linear models to do. How can define a
list "ls"so that I can write the codes as
for (i in 1:3)
{
ls[[i]]<-summary(lm(y[,i]~x[,i]))
}
Jeff Newmiller wrote
> Please do the reading I recommended before posting again. My example was
> numeric because your example was numeric. For more complicated data, a
> list is a type of vector that can hold such objects, and you would know
> this if you had read the intro document.
> ---------------------------------------------------------------------------
> Jeff Newmiller The ..... ..... Go
> Live...
> DCN:<
> jdnewmil@.ca
> > Basics: ##.#. ##.#. Live Go...
> Live: OO#.. Dead: OO#.. Playing
> Research Engineer (Solar/Batteries O.O#. #.O#. with
> /Software/Embedded Controllers) .OO#. .OO#.
> rocks...1k
> ---------------------------------------------------------------------------
> Sent from my phone. Please excuse my brevity.
>
> On May 13, 2014 7:22:08 PM PDT, yuanzhi <
> yuanzhi.li@
> > wrote:
>>Thank you for your reply.
>>
>>Yes, there is a problem according to you suggestion.
>>What if the value are not numerical, e.g. I want to use the variable to
>>store the results of linear regression.
>>can I use
>>myvec <- vector( "numeric", 10 )
>>for ( i in 1:10 ) {
>> myvec[ i ] <- summary(lm(y~x)) # y and x are different values in each
>>loop.
>>}
>>?
>>
>>you advice seems only to be available when the function left allocates
>>a
>>numerical value to the variable, what if the function return other type
>>of
>>objects?
>>
>>
>>
>>
>>Jeff Newmiller wrote
>>> What is wrong with
>>>
>>> myvec <- vector( "numeric", 10 )
>>> for ( i in 1:10 ) {
>>> myvec[ i ] <- i
>>> }
>>>
>>> ?
>>>
>>> If you are using assign, IMHO you are probably doing whatever you are
>>> doing wrong.
>>>
>>> If you want named elements, give the vector names:
>>>
>>> names( myvec ) <- paste0( "t", 1:10 )
>>>
>>> and you can refer to them
>>>
>>> myvec[ "t3" ]
>>>
>>> Go read the "Introduction to R" document again... particularly the
>>> discussion of indexing.
>>>
>>---------------------------------------------------------------------------
>>> Jeff Newmiller The ..... ..... Go
>>> Live...
>>> DCN:<
>>
>>> jdnewmil@.ca
>>
>>> > Basics: ##.#. ##.#. Live Go...
>>> Live: OO#.. Dead: OO#..
>>Playing
>>> Research Engineer (Solar/Batteries O.O#. #.O#. with
>>> /Software/Embedded Controllers) .OO#. .OO#.
>>> rocks...1k
>>>
>>---------------------------------------------------------------------------
>>
>>> Sent from my phone. Please excuse my brevity.
>>>
>>> On May 13, 2014 5:47:12 PM PDT, Yuanzhi Li <
>>
>>> Yuanzhi.Li@
>>
>>> > wrote:
>>>>Hi, everyone
>>>>
>>>>I want to create a series of variables (e.g. t1, t2..., t10) which
>>>>could
>>>>be used in loops. My idea is to use function "assign"
>>>>
>>>>for (i in 1:10)
>>>>{
>>>> assign(paste("t",i,sep=""), FUN) # allocate the value from FUN to
>>>>variable ti
>>>>}
>>>>
>>>>But when I create a vector containing the names of these variables
>>and
>>>>want to use the variables according to the subscript, it doesn't
>>works.
>>>>
>>>>t<-noquote(paste("t",1:10,sep=""))
>>>>t[1]
>>>>t1
>>>>it returns only the name of variable t1, but not the value allocated
>>to
>>>>
>>>>t1 by FUN. So what should I do to realize this?
>>>>
>>>>Or is there any better way to do this?
>>>>
>>>>Can we define a series of variables which can be used according to
>>the
>>>>subscript like
>>>>t<-f(t1, t2..., t10),
>>>>then we have 10 variables which can be used directly?
>>>>for(i in 1:10)
>>>>{
>>>> t[i]<-FUN# with the fines variables we can directly assign the
>>value
>>>>of FUN to ti
>>>>}
>>>>These are just my thoughts, I don't know whether there are available
>>R
>>>>codes to realized it. I am looking forward any help from you.
>>>>
>>>>Thanks in advance!
>>>>
>>>>Yuanzhi
>>>>
>>>>______________________________________________
>>>>
>>
>>> R-help@
>>
>>> mailing list
>>>>https://stat.ethz.ch/mailman/listinfo/r-help
>>>>PLEASE do read the posting guide
>>>>http://www.R-project.org/posting-guide.html
>>>>and provide commented, minimal, self-contained, reproducible code.
>>>
>>> ______________________________________________
>>
>>> R-help@
>>
>>> mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>>
>>
>>
>>--
>>View this message in context:
>>http://r.789695.n4.nabble.com/How-to-create-multi-variables-tp4690465p4690470.html
>>Sent from the R help mailing list archive at Nabble.com.
>>
>>______________________________________________
>>
> R-help@
> mailing list
>>https://stat.ethz.ch/mailman/listinfo/r-help
>>PLEASE do read the posting guide
>>http://www.R-project.org/posting-guide.html
>>and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help@
> mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
--
View this message in context:
http://r.789695.n4.nabble.com/How-to-create-multi-variables-tp4690465p4690537.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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