Re: [R] merge multiple data frames

to study for a while thank you for your help max - Original Message - From: "MacQueen, Don" To: "Massimo Bressan" ; Sent: Monday, January 30, 2012 4:47 PM Subject: Re: [R] merge multiple data frames Does this example help? It doesn't handle the problem of

Re: [R] merge multiple data frames

thanks don I have here enough to study for a while thank you for your help max - Original Message - From: "MacQueen, Don" To: "Massimo Bressan" ; Sent: Monday, January 30, 2012 4:47 PM Subject: Re: [R] merge multiple data frames Does this example help? I

Re: [R] merge multiple data frames

t;-sqldf("select a_b.*, c.* from a_b left join c on a_b.date=c.date") > >bye > >max > > > > > >- Original Message - >From: "MacQueen, Don" >To: "maxbre" ; >Sent: Saturday, January 28, 2012 12:24 AM >Subject: Re

Re: [R] merge multiple data frames

thanks michael it's working like a charm: that's exaclty what I was looking for bye max - Original Message - From: "R. Michael Weylandt" To: "Massimo Bressan" Cc: Sent: Friday, January 27, 2012 4:16 PM Subject: Re: [R] merge multiple data frames O

Re: [R] merge multiple data frames

t a_b.*, c.* from a_b left join c on a_b.date=c.date") bye max - Original Message - From: "MacQueen, Don" To: "maxbre" ; Sent: Saturday, January 28, 2012 12:24 AM Subject: Re: [R] merge multiple data frames Not tested, but this might be a case for the s

Re: [R] merge multiple data frames

Not tested, but this might be a case for the sqldf package. -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 1/26/12 9:29 AM, "maxbre" wrote: >This is my reproducible example (three data frames: a, b, c) > >a<-structure

Re: [R] merge multiple data frames

Massimo Bressan wrote: > I tested your code: it's OK but there is still the problem of the suffixes > for the last dataframe > thank you for the support > > > - Original Message - From: "R. Michael Weylandt" > > To: "maxbre" > Cc:

Re: [R] merge multiple data frames

I tested your code: it's OK but there is still the problem of the suffixes for the last dataframe thank you for the support - Original Message - From: "R. Michael Weylandt" To: "maxbre" Cc: Sent: Thursday, January 26, 2012 8:19 PM Subject: Re: [R] m

Re: [R] merge multiple data frames

thank you for your reply I'll study and test your code (which is a bit obscure to me up to now); by the way do you think that "merge_all" is a wrong way to hit? thanks again m -- View this message in context: http://r.789695.n4.nabble.com/merge-multiple-data-frames-tp4331089p4331830.html Sent fr

Re: [R] merge multiple data frames

I might do something like this: mergeAll <- function(..., by = "date", all = TRUE) { dotArgs <- list(...) Reduce(function(x, y) merge(x, y, by = by, all = all, suffixes=paste(".", names(dotArgs), sep = "")), dotArgs)} mergeAll(a = a, b = b, c = c) str(.Last.value) You also might be able