Re: [R] building a list in a loop

2015-06-05 Thread William Dunlap
Does the following do what you want?
> d <- list() # empty list
> for(i in 1:8) if (i %% 2 == 0) {
 newElement <- structure(list(i), names=LETTERS[i])
 d <- c(d, newElement)
  }
> str(d)
List of 4
 $ B: int 2
 $ D: int 4
 $ F: int 6
 $ H: int 8




Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Fri, Jun 5, 2015 at 1:40 AM, carol white via R-help  wrote:

> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note that
> the name of the component is stored in a variable in the loop
>
> d = NULL#name1 contains the name for c(1,2,3), how to give the name below?
> d = list(d,c(1,2,3)
> Thanks
>
> [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.

[[alternative HTML version deleted]]

__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.


Re: [R] building a list in a loop

2015-06-05 Thread Jeff Newmiller
Your explanation of the problem is unclear and your use of HTML formatting 
corrupts your code examples.

One issue is your reference to a loop while showing no loop nor input nor 
output. There is more than one construct for iterating in R. One problem you 
may be encountering is that you cannot change the vector over which you iterate 
in a for loop while you are in that loop. If that is your problem then you 
probably need to use something like a while loop. However your example is too 
abstract (and scrambled by HTML) for me to fix it.

To make your problem clearer [1], you could give us a dput of a sample input 
data object with a few elements (rows, columns, whatever) and build each 
element of your output without resorting to a loop. We could then suggest ways 
to use a loop to accomplish the same thing.

[1] 
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
---
Jeff NewmillerThe .   .  Go Live...
DCN:Basics: ##.#.   ##.#.  Live Go...
  Live:   OO#.. Dead: OO#..  Playing
Research Engineer (Solar/BatteriesO.O#.   #.O#.  with
/Software/Embedded Controllers)   .OO#.   .OO#.  rocks...1k
--- 
Sent from my phone. Please excuse my brevity.

On June 5, 2015 1:40:04 AM PDT, carol white via R-help  
wrote:
>It might be an easy question but how to construct correctly a list in a
>loop? 
>
>The following doesn't work
>before starting the loopd = NULL#in the loop, 1st iteration
>d = list(d,c(1,2,3)d[[1]]
>NULL
>
>[[2]]
>[1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
>[[1]]
>[[1]][[1]]
>NULL
>
>[[1]][[2]]
>[1] 1 2 3
>
>
>[[2]]
>[1] 4 5 6
>the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
>list components are not known out of the loop.
>d[[1]]
>[1] 1 2 3
>
>[[2]]
>[1] 4 5 6
>Moreover, how to name the components of the list in the loop while
>constructing as the names are not known out of the loop, either? note
>that the name of the component is stored in a variable in the loop
>
>d = NULL#name1 contains the name for c(1,2,3), how to give the name
>below?
>d = list(d,c(1,2,3)
>Thanks
> 
>   [[alternative HTML version deleted]]
>
>__
>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>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@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.

Re: [R] building a list in a loop

2015-06-05 Thread PIKAL Petr
Hi

I do not understand. „i“ is variable and list elements are called by this 
variable

#constructing list
> d<-as.list(sample(letters[1:5], 5, replace=F))
> names(d) <- letters[1:5]
> d
$a
[1] "c"
$b
[1] "a"
$c
[1] "e"
$d
[1] "b"
$e
[1] "d"

#variable el
> el<-"a"

#result
> d[[el]]<-"whatever I want to put under name a"
> d
$a
[1] "whatever I want to put under name a"
$b
[1] "a"
$c
[1] "e"
$d
[1] "b"
$e
[1] "d"

Cheers
Petr


From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 1:31 PM
To: PIKAL Petr
Cc: r-help@r-project.org
Subject: Re: [R] building a list in a loop

in this example can elements of the list be accessed by their name if their 
name is the value of a variable?
el = "a"
can the first element d[[1]] be accessed by el instead of the list index like 
d$a but via el?

Thanks


On Friday, June 5, 2015 12:04 PM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

This I do not consider as a loop without index.  AFAIK i is index and the loop 
is executed twice. First with i equal to „a“ and second time with i equal to 
„b“.

In that case you need to have some objects which are named “a” or “b”  and you 
can use it for selection or computing

d<-list(a=NULL, b=NULL)
for (i in c("a","b")) {
d[[i]]<-1:3
}

Cheers
Petr

From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:51 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop

for (i in c("a","b"))

best,



On Friday, June 5, 2015 11:36 AM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

Can you please specify how loop without index shall be constructed? It is 
rather new topic for me.

Petr

From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:21 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop

also consider a loop without index (not like for (i ...) where index could be 
used for the list construction)

Cheers,


On Friday, June 5, 2015 11:13 AM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

It is not clear what exactly do you want.

d<-list()
vec<-1:3
for (i in 1:2) {
vec<-vec+3*(i-1)
d[[i]]<-vec
#names(d)[i] <- paste("name",i)
}

You can add names in second loop or you can use names command in first loop.

Cheers
Petr

> -Original Message-
> From: R-help 
> [mailto:r-help-boun...@r-project.org<mailto:r-help-boun...@r-project.org>] On 
> Behalf Of carol
> white via R-help
> Sent: Friday, June 05, 2015 10:40 AM
> To: R-help Help
> Subject: [R] building a list in a loop
>
> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note
> that the name of the component is stored in a variable in the loop
>
> d = NULL#name1 contains the name for c(1,2,3), how to give the name
> below?
> d = list(d,c(1,2,3)
> Thanks

>
>  [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org<mailto:R-help@r-project.org> mailing list -- To 
> UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
> http://www.R-project.org/posting-<http://www.r-project.org/posting->
> guide.html
> and provide commented, minimal, self-contained, reproducible code.


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Re: [R] building a list in a loop

2015-06-05 Thread carol white via R-help
Here is the best solution that I found as the list is built in the embedded 
functions withtout using loop index, list elements' names etc
d = list()d[[length(d)+1]] = 1:3d[[length(d)+1]] = 4:6
Many thanks for your help
 


 On Friday, June 5, 2015 12:04 PM, PIKAL Petr  
wrote:
   

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div.yiv1728143486WordSection1 {}#yiv1728143486 Hi This I do not consider as a 
loop without index.  AFAIK i is index and the loop is executed twice. First 
with i equal to „a“ and second time with i equal to „b“.  In that case you need 
to have some objects which are named“a” or “b”  and you can use it for 
selection or computing d<-list(a=NULL, b=NULL)for (i in c("a","b")) 
{d[[i]]<-1:3} CheersPetr From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:51 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop for (i in c("a","b")) best,   On 
Friday, June 5, 2015 11:36 AM, PIKAL Petr  wrote: Hi 
Can you please specify how loop without index shall be constructed? It is 
rather new topic for me. Petr From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:21 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop also consider a loop without index 
(not like for (i ...) where index could be used for the list construction) 
Cheers,  On Friday, June 5, 2015 11:13 AM, PIKAL Petr  
wrote: Hi

It is not clear what exactly do you want.

d<-list()
vec<-1:3
for (i in 1:2) {
vec<-vec+3*(i-1)
d[[i]]<-vec
#names(d)[i] <- paste("name",i)
}

You can add names in second loop or you can use names command in first loop.

Cheers
Petr
> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of carol
> white via R-help
> Sent: Friday, June 05, 2015 10:40 AM
> To: R-help Help
> Subject: [R] building a list in a loop
>
> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note
> that the name of the component

Re: [R] building a list in a loop

2015-06-05 Thread carol white via R-help
in this example can elements of the list be accessed by their name if their 
name is the value of a variable?el = "a"can the first element d[[1]] be 
accessed by el instead of the list index like d$a but via el?
Thanks
 


 On Friday, June 5, 2015 12:04 PM, PIKAL Petr  
wrote:
   

 #yiv1728143486 #yiv1728143486 _filtered #yiv1728143486 
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div.yiv1728143486WordSection1 {}#yiv1728143486 Hi This I do not consider as a 
loop without index.  AFAIK i is index and the loop is executed twice. First 
with i equal to „a“ and second time with i equal to „b“.  In that case you need 
to have some objects which are named“a” or “b”  and you can use it for 
selection or computing d<-list(a=NULL, b=NULL)for (i in c("a","b")) 
{d[[i]]<-1:3} CheersPetr From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:51 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop for (i in c("a","b")) best,   On 
Friday, June 5, 2015 11:36 AM, PIKAL Petr  wrote: Hi 
Can you please specify how loop without index shall be constructed? It is 
rather new topic for me. Petr From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:21 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop also consider a loop without index 
(not like for (i ...) where index could be used for the list construction) 
Cheers,  On Friday, June 5, 2015 11:13 AM, PIKAL Petr  
wrote: Hi

It is not clear what exactly do you want.

d<-list()
vec<-1:3
for (i in 1:2) {
vec<-vec+3*(i-1)
d[[i]]<-vec
#names(d)[i] <- paste("name",i)
}

You can add names in second loop or you can use names command in first loop.

Cheers
Petr
> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of carol
> white via R-help
> Sent: Friday, June 05, 2015 10:40 AM
> To: R-help Help
> Subject: [R] building a list in a loop
>
> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note
> that the name of the component is stored in a variable in the loop
>
> d = N

Re: [R] building a list in a loop

2015-06-05 Thread PIKAL Petr
Hi

This I do not consider as a loop without index.  AFAIK i is index and the loop 
is executed twice. First with i equal to „a“ and second time with i equal to 
„b“.

In that case you need to have some objects which are named “a” or “b”  and you 
can use it for selection or computing

d<-list(a=NULL, b=NULL)
for (i in c("a","b")) {
d[[i]]<-1:3
}

Cheers
Petr

From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:51 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop

for (i in c("a","b"))

best,



On Friday, June 5, 2015 11:36 AM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

Can you please specify how loop without index shall be constructed? It is 
rather new topic for me.

Petr

From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:21 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop

also consider a loop without index (not like for (i ...) where index could be 
used for the list construction)

Cheers,


On Friday, June 5, 2015 11:13 AM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

It is not clear what exactly do you want.

d<-list()
vec<-1:3
for (i in 1:2) {
vec<-vec+3*(i-1)
d[[i]]<-vec
#names(d)[i] <- paste("name",i)
}

You can add names in second loop or you can use names command in first loop.

Cheers
Petr

> -Original Message-
> From: R-help 
> [mailto:r-help-boun...@r-project.org<mailto:r-help-boun...@r-project.org>] On 
> Behalf Of carol
> white via R-help
> Sent: Friday, June 05, 2015 10:40 AM
> To: R-help Help
> Subject: [R] building a list in a loop
>
> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note
> that the name of the component is stored in a variable in the loop
>
> d = NULL#name1 contains the name for c(1,2,3), how to give the name
> below?
> d = list(d,c(1,2,3)
> Thanks

>
>  [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org<mailto:R-help@r-project.org> mailing list -- To 
> UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
> http://www.R-project.org/posting-<http://www.r-project.org/posting->
> guide.html
> and provide commented, minimal, self-contained, reproducible code.


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Delete the contents of this e-mail with all attachments and its copies from 
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Re: [R] building a list in a loop

2015-06-05 Thread PIKAL Petr
Hi

Can you please specify how loop without index shall be constructed? It is 
rather new topic for me.

Petr

From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:21 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop

also consider a loop without index (not like for (i ...) where index could be 
used for the list construction)

Cheers,


On Friday, June 5, 2015 11:13 AM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

It is not clear what exactly do you want.

d<-list()
vec<-1:3
for (i in 1:2) {
vec<-vec+3*(i-1)
d[[i]]<-vec
#names(d)[i] <- paste("name",i)
}

You can add names in second loop or you can use names command in first loop.

Cheers
Petr

> -Original Message-
> From: R-help 
> [mailto:r-help-boun...@r-project.org<mailto:r-help-boun...@r-project.org>] On 
> Behalf Of carol
> white via R-help
> Sent: Friday, June 05, 2015 10:40 AM
> To: R-help Help
> Subject: [R] building a list in a loop
>
> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note
> that the name of the component is stored in a variable in the loop
>
> d = NULL#name1 contains the name for c(1,2,3), how to give the name
> below?
> d = list(d,c(1,2,3)
> Thanks

>
>  [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org<mailto:R-help@r-project.org> mailing list -- To 
> UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
> http://www.R-project.org/posting-<http://www.r-project.org/posting->
> guide.html
> and provide commented, minimal, self-contained, reproducible code.


Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou určeny 
pouze jeho adresátům.
Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě neprodleně 
jeho odesílatele. Obsah tohoto emailu i s přílohami a jeho kopie vymažte ze 
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Nejste-li zamýšleným adresátem tohoto emailu, nejste oprávněni tento email 
jakkoliv užívat, rozšiřovat, kopírovat či zveřejňovat.
Odesílatel e-mailu neodpovídá za eventuální škodu způsobenou modifikacemi či 
zpožděním přenosu e-mailu.

V případě, že je tento e-mail součástí obchodního jednání:
- vyhrazuje si odesílatel právo ukončit kdykoliv jednání o uzavření smlouvy, a 
to z jakéhokoliv důvodu i bez uvedení důvodu.
- a obsahuje-li nabídku, je adresát oprávněn nabídku bezodkladně přijmout; 
Odesílatel tohoto e-mailu (nabídky) vylučuje přijetí nabídky ze strany příjemce 
s dodatkem či odchylkou.
- trvá odesílatel na tom, že příslušná smlouva je uzavřena teprve výslovným 
dosažením shody na všech jejích náležitostech.
- odesílatel tohoto emailu informuje, že není oprávněn uzavírat za společnost 
žádné smlouvy s výjimkou případů, kdy k tomu byl písemně zmocněn nebo písemně 
pověřen a takové pověření nebo plná moc byly adresátovi tohoto emailu případně 
osobě, kterou adresát zastupuje, předloženy nebo jejich existence je adresátovi 
či osobě jím zastoupené známá.

This e-mail and any documents attached to it may be confidential and are 
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If you received this e-mail by mistake, please immediately inform its sender. 
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Re: [R] building a list in a loop

2015-06-05 Thread PIKAL Petr
Hi

I do not understand. My mind reading ambilities are limited.

Where do you get your vectors from?

Instead of
vec<-vec+3*(i-1)

you can use any computation to create any object.

d<-list()
n=2
for (i in 1:n) {
s<-sample(1:26, 10, replace=FALSE)
rn<-rnorm(10)
y<-rn*s*rnorm(1)+rnorm(1)
fit<-lm(y~s)
d[[i]]<-fit
names(d)[i] <- paste(letters[round(mean(s))],i, sep="")
}

So my opinion is that the code for populating list is pretty general.

Petr

From: carol white [mailto:wht_...@yahoo.com]
Sent: Friday, June 05, 2015 11:18 AM
To: PIKAL Petr
Subject: Re: [R] building a list in a loop

vectors c(1,2,3) etc were an example. the general case should be considered if 
it is a character vector with the unknown elements out of the loop. the same as 
the name. your code can't be generalized.


On Friday, June 5, 2015 11:13 AM, PIKAL Petr 
mailto:petr.pi...@precheza.cz>> wrote:

Hi

It is not clear what exactly do you want.

d<-list()
vec<-1:3
for (i in 1:2) {
vec<-vec+3*(i-1)
d[[i]]<-vec
#names(d)[i] <- paste("name",i)
}

You can add names in second loop or you can use names command in first loop.

Cheers
Petr

> -Original Message-
> From: R-help 
> [mailto:r-help-boun...@r-project.org<mailto:r-help-boun...@r-project.org>] On 
> Behalf Of carol
> white via R-help
> Sent: Friday, June 05, 2015 10:40 AM
> To: R-help Help
> Subject: [R] building a list in a loop
>
> It might be an easy question but how to construct correctly a list in a
> loop?
>
> The following doesn't work
> before starting the loopd = NULL#in the loop, 1st iteration
> d = list(d,c(1,2,3)d[[1]]
> NULL
>
> [[2]]
> [1] 1 2 3#in the loop, 2nd iterationd=list(d,c(4,5,6)d
> [[1]]
> [[1]][[1]]
> NULL
>
> [[1]][[2]]
> [1] 1 2 3
>
>
> [[2]]
> [1] 4 5 6
> the goal is to have the result of d= list(c(1,2,3),c(4,5,6)) where the
> list components are not known out of the loop.
> d[[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 4 5 6
> Moreover, how to name the components of the list in the loop while
> constructing as the names are not known out of the loop, either? note
> that the name of the component is stored in a variable in the loop
>
> d = NULL#name1 contains the name for c(1,2,3), how to give the name
> below?
> d = list(d,c(1,2,3)
> Thanks

>
>  [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org<mailto:R-help@r-project.org> mailing list -- To 
> UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
> http://www.R-project.org/posting-<http://www.r-project.org/posting->
> guide.html
> and provide commented, minimal, self-contained, reproducible code.


Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou určeny 
pouze jeho adresátům.
Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě neprodleně 
jeho odesílatele. Obsah tohoto emailu i s přílohami a jeho kopie vymažte ze 
svého systému.
Nejste-li zamýšleným adresátem tohoto emailu, nejste oprávněni tento email 
jakkoliv užívat, rozšiřovat, kopírovat či zveřejňovat.
Odesílatel e-mailu neodpovídá za eventuální škodu způsobenou modifikacemi či 
zpožděním přenosu e-mailu.

V případě, že je tento e-mail součástí obchodního jednání:
- vyhrazuje si odesílatel právo ukončit kdykoliv jednání o uzavření smlouvy, a 
to z jakéhokoliv důvodu i bez uvedení důvodu.
- a obsahuje-li nabídku, je adresát oprávněn nabídku bezodkladně přijmout; 
Odesílatel tohoto e-mailu (nabídky) vylučuje přijetí nabídky ze strany příjemce 
s dodatkem či odchylkou.
- trvá odesílatel na tom, že příslušná smlouva je uzavřena teprve výslovným 
dosažením shody na všech jejích náležitostech.
- odesílatel tohoto emailu informuje, že není oprávněn uzavírat za společnost 
žádné smlouvy s výjimkou případů, kdy k tomu byl písemně zmocněn nebo písemně 
pověřen a takové pověření nebo plná moc byly adresátovi tohoto emailu případně 
osobě, kterou adresát zastupuje, předloženy nebo jejich existence je adresátovi 
či osobě jím zastoupené známá.

This e-mail and any documents attached to it may be confidential and are 
intended only for its intended recipients.
If you received this e-mail by mistake, please immediately inform its sender. 
Delete the contents of this e-mail with all attachments and its copies from 
your system.
If you are not the intended recipient of this e-mail, you are not authorized to 
use, disseminate, copy or disclose this e-mail in any manner.
The sender of this e-mail shall not be liable for any possible damage caused by 
modifications of the e-mail or by delay with transfer of the email.

In case that this e-mail forms part of business dealings:
- the sender reserves the right to end negotiations about