Hi
you does not need this:
dput(df1<-data.frame(col1=c(1,2,3,4,5),col2=c("aa","aa","bb","cc","dd")))
this is enough to represent exactly any object to mail:
> dput(df1)
structure(list(col1 = c(1, 2, 3, 4, 5), col2 = structure(c(1L,
1L, 2L, 3L, 4L), .Label = c("aa", "bb", "cc", "dd"), class = "factor")), .Names
= c("col1",
"col2"), row.names = c(NA, -5L), class = "data.frame")
Anyway (I am sure there is better way but)
# make list from your data frames
lll<-list(df1, df2, df3)
#add new column to each part
for (i in 1:3) lll[[i]]$n<-i
#concatenate data to one data frame
dat<-do.call(rbind, lll)
# make table (and data frame from it)
data.frame(unclass(table(dat$col2, dat$n)))
X1 X2 X3
aa 2 0 2
bb 1 3 0
cc 1 1 0
dd 1 0 0
I believe that in your dfn is typo in second row and first column and that with
your 3 data.frames the result should be 1.
Cheers
Petr
> -----Original Message-----
> From: Ek Esawi [mailto:esaw...@gmail.com]
> Sent: Tuesday, February 27, 2018 2:54 PM
> To: PIKAL Petr <petr.pi...@precheza.cz>; r-help@r-project.org
> Subject: Re: [R] Aggregate over multiple and unequal column length data
> frames
>
> Thank you Pikal and Bert. My apology for posting parts of my previous email in
> HTML. Bert's suggestion will work but i am wondering if there is an
> alternative
> especially in the case where the data frames are big; that is the difference
> in
> lengths among them is large. Below is a list of sample date frames and desired
> result.
>
> EK
>
>
> dput(df1<-data.frame(col1=c(1,2,3,4,5),col2=c("aa","aa","bb","cc","dd")))
> dput(df2<-data.frame(col1=c(1,2,4,5),col2=c("bb","bb","cc","bb")))
> dput(df3<-data.frame(col1=c(1,3),col2=c("aa","aa")))
> # desired result
> dput(dfn<-data.frame(col1=c(2,2,1,1),col2=c(0,3,1,0),col3=c(2,0,0,0),row.names
> = c("aa","bb","cc","dd")))
>
> On Fri, Feb 23, 2018 at 7:45 AM, PIKAL Petr <petr.pi...@precheza.cz> wrote:
> > Hi
> >
> > Your example is rather confusing - partly because HTML formating, partly
> because weird coding.
> >
> > You probably could concatenate your data frames e.g. by rbind or merge and
> after that you could try to aggregate them somehow.
> >
> > I could construct example data.frames myself but most probably they would
> be different from yours and also the result would not be necessary the same as
> you expect.
> >
> > You should post those data frames as output from dput(data) and show us
> real desired result from those example data frames.
> >
> > Cheers
> > Petr
> >
> >> -----Original Message-----
> >> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Ek
> >> Esawi
> >> Sent: Wednesday, February 21, 2018 3:34 AM
> >> To: r-help@r-project.org
> >> Subject: [R] Aggregate over multiple and unequal column length data
> >> frames
> >>
> >> Hi All--
> >>
> >> I have generated several 2 column data frames with variable length.
> >> The data frames have the same column names and variable types. I was
> >> trying to aggregate over the 2nd column for all the date frames, but
> >> could not figure out how.
> >>
> >> I thought i could make them all of equal length then combine them in
> >> 1 data frame where i can use aggregate, the formula version Or to put
> >> them in a list and loop use lapply but did not know how to do that
> >> and thought there might be a simpler way.
> >>
> >> Below is an example of 3 data frames and the desired result; note
> >> that some levels don't appear in all and may be null over all
> >> variable, like the case of dd on the desired result which i would like to
> >> list all
> levels even if some are all null.
> >>
> >> Thanks in advance,
> >>
> >> EK
> >>
> >> df1 df2 df3
> >>
> >> c1 c2 c1 c2 c1 c2
> >> 1 aa 1 bb 1 aa
> >> 2 aa 2 bb 2 aa
> >> 3 bb 3 cc
> >> 4 cc 4 bb
> >> 5 bb
> >>
> >> desired result
> >>
> >> c1 c2 c2 c2
> >> aa 2 2
> >> bb 1 2 2
> >> cc 1 1
> >> dd
> >>
> >> [[alternative HTML version deleted]]
> >>
________________________________
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 sender of this e-mail informs that he/she is not authorized to enter into
any contracts on behalf of the company except for cases in which he/she is
expressly authorized to do so in writing, and such authorization or power of
attorney is submitted to the recipient or the person represented by the
recipient, or the existence of such authorization is known to the recipient of
the person represented by the recipient.
______________________________________________
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.
