Re: [R] building a list in a loop
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
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
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. 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 p
Re: [R] building a list in a loop
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: #yiv1728143486 #yiv1728143486 _filtered #yiv1728143486 {font-family:Helvetica;} _filtered #yiv1728143486 {font-family:Helvetica;} _filtered #yiv1728143486 {font-family:Calibri;} _filtered #yiv1728143486 {font-family:Tahoma;}#yiv1728143486 p.yiv1728143486MsoNormal, #yiv1728143486 li.yiv1728143486MsoNormal, #yiv1728143486 div.yiv1728143486MsoNormal {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}#yiv1728143486 a:link, #yiv1728143486 span.yiv1728143486MsoHyperlink {color:blue;text-decoration:underline;}#yiv1728143486 a:visited, #yiv1728143486 span.yiv1728143486MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv1728143486 p.yiv1728143486MsoAcetate, #yiv1728143486 li.yiv1728143486MsoAcetate, #yiv1728143486 div.yiv1728143486MsoAcetate {margin:0cm;margin-bottom:.0001pt;font-size:8.0pt;}#yiv1728143486 p.yiv1728143486msonormal, #yiv1728143486 li.yiv1728143486msonormal, #yiv1728143486 div.yiv1728143486msonormal {margin-right:0cm;margin-left:0cm;font-size:12.0pt;}#yiv1728143486 p.yiv1728143486msochpdefault, #yiv1728143486 li.yiv1728143486msochpdefault, #yiv1728143486 div.yiv1728143486msochpdefault {margin-right:0cm;margin-left:0cm;font-size:12.0pt;}#yiv1728143486 span.yiv1728143486msohyperlink {}#yiv1728143486 span.yiv1728143486msohyperlinkfollowed {}#yiv1728143486 span.yiv1728143486style-mailovzprvy17 {}#yiv1728143486 p.yiv1728143486msonormal1, #yiv1728143486 li.yiv1728143486msonormal1, #yiv1728143486 div.yiv1728143486msonormal1 {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}#yiv1728143486 span.yiv1728143486msohyperlink1 {color:blue;text-decoration:underline;}#yiv1728143486 span.yiv1728143486msohyperlinkfollowed1 {color:purple;text-decoration:underline;}#yiv1728143486 span.yiv1728143486style-mailovzprvy171 {color:#1F497D;}#yiv1728143486 p.yiv1728143486msochpdefault1, #yiv1728143486 li.yiv1728143486msochpdefault1, #yiv1728143486 div.yiv1728143486msochpdefault1 {margin-right:0cm;margin-left:0cm;font-size:10.0pt;}#yiv1728143486 span.yiv1728143486TextbublinyChar {}#yiv1728143486 span.yiv1728143486StylE-mailovZprvy29 {color:#1F497D;}#yiv1728143486 .yiv1728143486MsoChpDefault {font-size:10.0pt;} _filtered #yiv1728143486 {margin:70.85pt 70.85pt 70.85pt 70.85pt;}#yiv1728143486 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
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 {font-family:Helvetica;} _filtered #yiv1728143486 {font-family:Helvetica;} _filtered #yiv1728143486 {font-family:Calibri;} _filtered #yiv1728143486 {font-family:Tahoma;}#yiv1728143486 p.yiv1728143486MsoNormal, #yiv1728143486 li.yiv1728143486MsoNormal, #yiv1728143486 div.yiv1728143486MsoNormal {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}#yiv1728143486 a:link, #yiv1728143486 span.yiv1728143486MsoHyperlink {color:blue;text-decoration:underline;}#yiv1728143486 a:visited, #yiv1728143486 span.yiv1728143486MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv1728143486 p.yiv1728143486MsoAcetate, #yiv1728143486 li.yiv1728143486MsoAcetate, #yiv1728143486 div.yiv1728143486MsoAcetate {margin:0cm;margin-bottom:.0001pt;font-size:8.0pt;}#yiv1728143486 p.yiv1728143486msonormal, #yiv1728143486 li.yiv1728143486msonormal, #yiv1728143486 div.yiv1728143486msonormal {margin-right:0cm;margin-left:0cm;font-size:12.0pt;}#yiv1728143486 p.yiv1728143486msochpdefault, #yiv1728143486 li.yiv1728143486msochpdefault, #yiv1728143486 div.yiv1728143486msochpdefault {margin-right:0cm;margin-left:0cm;font-size:12.0pt;}#yiv1728143486 span.yiv1728143486msohyperlink {}#yiv1728143486 span.yiv1728143486msohyperlinkfollowed {}#yiv1728143486 span.yiv1728143486style-mailovzprvy17 {}#yiv1728143486 p.yiv1728143486msonormal1, #yiv1728143486 li.yiv1728143486msonormal1, #yiv1728143486 div.yiv1728143486msonormal1 {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}#yiv1728143486 span.yiv1728143486msohyperlink1 {color:blue;text-decoration:underline;}#yiv1728143486 span.yiv1728143486msohyperlinkfollowed1 {color:purple;text-decoration:underline;}#yiv1728143486 span.yiv1728143486style-mailovzprvy171 {color:#1F497D;}#yiv1728143486 p.yiv1728143486msochpdefault1, #yiv1728143486 li.yiv1728143486msochpdefault1, #yiv1728143486 div.yiv1728143486msochpdefault1 {margin-right:0cm;margin-left:0cm;font-size:10.0pt;}#yiv1728143486 span.yiv1728143486TextbublinyChar {}#yiv1728143486 span.yiv1728143486StylE-mailovZprvy29 {color:#1F497D;}#yiv1728143486 .yiv1728143486MsoChpDefault {font-size:10.0pt;} _filtered #yiv1728143486 {margin:70.85pt 70.85pt 70.85pt 70.85pt;}#yiv1728143486 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
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. 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
Re: [R] building a list in a loop
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 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 entering into a contract in any time, for any reason, and without stating any reasoning. - if the e-mail contains an offer, the recipient is entitled to immediately accept such offer; The sender of this e-mail (offer) excludes any acceptance of the offer on the part of the recipient containing any amendment or variation. - the sender insists on that the respective contract is concluded only upon an express mutual agreement on all its aspects. - the sende
Re: [R] building a list in a loop
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