Hi, I am working on the following file:> str(elencositi)'data.frame': 641 obs. of 2 variables: $ indirizzo.sito: chr "10ahora.com.ar" "abceconomia.co" "accmag.com" " actu.orange.fr" ... $ nome.sito : chr "10ahora" "ABC economia" "Acc Magazine" "Orange Actu" ...> head(elencositi)indirizzo.sito nome.sito 1 10ahora.com.ar 10ahora 2 abceconomia.co ABC economia 3 accmag.com Acc Magazine 4 actu.orange.fr Orange Actu 5 affaires.lapresse.ca La Presse 6 agipapress.blogspot.it Agigapress Which is regularly updated and I consequently need to update a procedure that takes elencositi data to update dati$FONTE as indicated below: dati$FONTE <- ifelse(dati$FONTE=='10ahora.com.ar','10ahora',dati$FONTE) dati$FONTE <- ifelse(dati$FONTE=='abceconomia.co','ABC economia',dati$FONTE) dati$FONTE <- ifelse(dati$FONTE=='accmag.com','Acc Magazine',dati$FONTE) Currently I am using a time consuming procedure involving Excel to update that, but how can I make that automatic? Thank you in advance, Luca [[alternative HTML version deleted]]
Hi one possibility is to use merge but it generates new data. Match can result in required data, but maybe there are also other options. First some toy data edat<-data.frame(letters, LETTERS) set.seed(111) dati<-data.frame(FFF=sample(letters[8:15], 35, replace=T)) dati$FFF<-as.character(dati$FFF) dati$FFF[c(5,12, 23, 31)]<-2> head(dati$FFF, 10)[1] "l" "m" "j" "l" "2" "k" "h" "l" "k" "h" names(edat)<-c("let", "LET") merge(dati, edat, by.x="FFF", by.y="let", all.x=TRUE)> merge(dati, edat, by.x="FFF", by.y="let", all.x=TRUE)FFF LET 1 2 <NA> 2 2 <NA> 3 2 <NA> 4 2 <NA> 5 h H 6 h H 7 h H .... 32 m M 33 n N 34 o O 35 o O>Now with match ind<-edat$LET[match(dati$FFF, edat$let)] ind<-as.character(ind) dati$FFF <- ifelse(is.na(ind), dati$FFF, ind)> head(dati$FFF, 10)[1] "L" "M" "J" "L" "2" "K" "H" "L" "K" "H" Cheers Petr> -----Original Message----- > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Luca > Meyer > Sent: Wednesday, February 8, 2017 10:28 AM > To: r-help <r-help at r-project.org> > Subject: [R] How do I best create a R procedure from a R file? > > Hi, > > I am working on the following file: > > > str(elencositi) > 'data.frame': 641 obs. of 2 variables: > $ indirizzo.sito: chr "10ahora.com.ar" "abceconomia.co" "accmag.com" " > actu.orange.fr" ... > $ nome.sito : chr "10ahora" "ABC economia" "Acc Magazine" "Orange > Actu" ... > > > head(elencositi) > indirizzo.sito nome.sito > 1 10ahora.com.ar 10ahora > 2 abceconomia.co ABC economia > 3 accmag.com Acc Magazine > 4 actu.orange.fr Orange Actu > 5 affaires.lapresse.ca La Presse > 6 agipapress.blogspot.it Agigapress > > Which is regularly updated and I consequently need to update a procedure > that takes elencositi data to update dati$FONTE as indicated below: > > dati$FONTE <- ifelse(dati$FONTE=='10ahora.com.ar','10ahora',dati$FONTE) > dati$FONTE <- ifelse(dati$FONTE=='abceconomia.co','ABC > economia',dati$FONTE) dati$FONTE <- ifelse(dati$FONTE=='accmag.com','Acc > Magazine',dati$FONTE) > > Currently I am using a time consuming procedure involving Excel to update > that, but how can I make that automatic? > > Thank you in advance, > > Luca > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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.________________________________ Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m. 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Erich Subscriptions
2017-Feb-08 18:23 UTC
[R] How do I best create a R procedure from a R file?
Rough sketch: lookup.vec <- elencositi$nome.sito names(ookup.vec) <- elencositi$indirezzo.sito dati$FONTE <- lookup.vec(dati$FONTE) This, however, assumes that elencositi has all the values that con occur.> On 8 Feb 2017, at 10:27, Luca Meyer <lucam1968 at gmail.com> wrote: > > Hi, > > I am working on the following file: > >> str(elencositi) > 'data.frame': 641 obs. of 2 variables: > $ indirizzo.sito: chr "10ahora.com.ar" "abceconomia.co" "accmag.com" " > actu.orange.fr" ... > $ nome.sito : chr "10ahora" "ABC economia" "Acc Magazine" "Orange > Actu" ... > >> head(elencositi) > indirizzo.sito nome.sito > 1 10ahora.com.ar 10ahora > 2 abceconomia.co ABC economia > 3 accmag.com Acc Magazine > 4 actu.orange.fr Orange Actu > 5 affaires.lapresse.ca La Presse > 6 agipapress.blogspot.it Agigapress > > Which is regularly updated and I consequently need to update a procedure > that takes elencositi data to update dati$FONTE as indicated below: > > dati$FONTE <- ifelse(dati$FONTE=='10ahora.com.ar','10ahora',dati$FONTE) > dati$FONTE <- ifelse(dati$FONTE=='abceconomia.co','ABC economia',dati$FONTE) > dati$FONTE <- ifelse(dati$FONTE=='accmag.com','Acc Magazine',dati$FONTE) > > Currently I am using a time consuming procedure involving Excel to update > that, but how can I make that automatic? > > Thank you in advance, > > Luca > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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.