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Hiroyuki Sato

2016-Feb-29 08:43 UTC

[R] create function for compare two dataframe.

Hello

I would like to create a funciton which is create new dataframe
for compare reslut of two dataframes.

  No.  COLUMN DF1  DF2
  "1"  "VAL1" "2"  "0" # <- compare
ID1,VAL1
  "2"  "VAL2" "3"  "2" # <- comapre
ID2,VAL2
  "3"  "VAL3" "4"  "2" # <- compare
ID3,VAL3

s1 <- read.table("sample1.txt",header=T,sep=',')
s2 <- read.table("sample2.txt",header=T,sep=',')
comp_data(df1,df2)

sample1.txt
  ID,VAL1,VAL2,VAL3
  ID1,2,2,3
  ID2,0,3,3
  ID3,0,2,4

sample2.txt
  ID1,0,2,3
  ID2,0,2,3
  ID3,0,2,2

I created the functions, but I got the following error.
Could you tell me how to add new frame data?
Or alternative way?

  1: In `[<-.factor`(`*tmp*`, ri, value = "3") :
    invalid factor level, NA generated
  2: In `[<-.factor`(`*tmp*`, ri, value = "VAL3") :
    invalid factor level, NA generated
  3: In `[<-.factor`(`*tmp*`, ri, value = "4") :
    invalid factor level, NA generated



  comp_data <- function(df1,df2) {
    #
    # create null data.frame
    out <- data.frame(matrix(rep(NA,4),nrow=1))[numeric(0), ]
    colnames(out) <-
c("ID","Site","df1","df2")

    # column names
    col_names <- colnames(df1)

    # col_size
    col_size <- ncol(df1)
    row_size <- nrow(df1)

    for( col in 2:col_size ){
      for( row in 1:row_size ){
        if( df1[row,col] != df2[row,col] ){
          out <-
rbind(out,c(df1[row,1],col_names[col],df1[row,col],df2[row,col]))
        }
      }
    }
    out
  }

Best regards.

	[[alternative HTML version deleted]]

PIKAL Petr

2016-Feb-29 09:15 UTC

head link

[R] create function for compare two dataframe.

Hi

You does not need to create function, you can use functions already available.
> s1<- read.table("clipboard", header=T, sep=",")
> s2<- read.table("clipboard", sep=",")
You presented second table without names.> names(s2) <- names(s1)
> s1     ID VAL1 VAL2 VAL3
1   ID1    2    2    3
2   ID2    0    3    3
3   ID3    0    2    4> s2     ID VAL1 VAL2 VAL3
1   ID1    0    2    3
2   ID2    0    2    3
3   ID3    0    2    2

You need to add a column in which you specify data frame and merge
them> s1$dat<-"df1"
> s2$dat<-"df2"
> s<-merge(s1,s2, all=T)
Now you need to reshape your data
> library(reshape2)
> s.m<-melt(s)
Using ID, dat as id variables> s.m      ID dat variable value
1    ID1 df1     VAL1     2
2    ID2 df2     VAL1     0
3    ID2 df1     VAL1     0
4    ID3 df2     VAL1     0
5    ID3 df1     VAL1     0
6    ID1 df2     VAL1     0
7    ID1 df1     VAL2     2
8    ID2 df2     VAL2     2
9    ID2 df1     VAL2     3
10   ID3 df2     VAL2     2
11   ID3 df1     VAL2     2
12   ID1 df2     VAL2     2
13   ID1 df1     VAL3     3
14   ID2 df2     VAL3     3
15   ID2 df1     VAL3     3
16   ID3 df2     VAL3     2
17   ID3 df1     VAL3     4
18   ID1 df2     VAL3     3

And cast the new structure.> dcast(s.m, ID+variable~dat)      ID variable df1 df2
1    ID1     VAL1   2  NA
2    ID1     VAL2   2  NA
3    ID1     VAL3   3  NA
4    ID2     VAL1   0   0
5    ID2     VAL2   3   2
6    ID2     VAL3   3   3
7    ID3     VAL1   0   0
8    ID3     VAL2   2   2
9    ID3     VAL3   4   2
10   ID1     VAL1  NA   0
11   ID1     VAL2  NA   2
12   ID1     VAL3  NA   3

This was the point that I was rather surprised but I found a reason. Your ID
variable does not have 3 but four values - although ID1 looks the same, in one
there is an extra space, therefore you have different ID1 in s1 from ID1 in s2.

That is why it is recommended to use dput() for exchanging data with others.
> str(s)'data.frame':   6 obs. of  5 variables:
 $ ID  : Factor w/ 4 levels "  ID1","  ID2",..: 1 2 2 3 3 4
 $ VAL1: int  2 0 0 0 0 0
 $ VAL2: int  2 2 3 2 2 2
 $ VAL3: int  3 3 3 2 4 3
 $ dat : chr  "df1" "df2" "df1" "df2"
...
> s1$ID[1]   ID1   ID2   ID3
Levels:   ID1   ID2   ID3> s2$ID[1] ID1     ID2   ID3
Levels:   ID2   ID3 ID1
> str(s1)'data.frame':   3 obs. of  5 variables:
 $ ID  : Factor w/ 3 levels "  ID1","  ID2",..: 1 2 3
 $ VAL1: int  2 0 0
 $ VAL2: int  2 3 2
 $ VAL3: int  3 3 4
 $ dat : chr  "df1" "df1"
"df1"> str(s2)'data.frame':   3 obs. of  5 variables:
 $ ID  : Factor w/ 3 levels "  ID2","  ID3",..: 3 1 2
 $ VAL1: int  0 0 0
 $ VAL2: int  2 2 2
 $ VAL3: int  3 3 2
 $ dat : chr  "df2" "df2"
"df2">
Cheers
Petr

> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of
> Hiroyuki Sato
> Sent: Monday, February 29, 2016 9:44 AM
> To: r-help at r-project.org
> Subject: [R] create function for compare two dataframe.
>
> Hello
>
> I would like to create a funciton which is create new dataframe for
> compare reslut of two dataframes.
>
>   No.  COLUMN DF1  DF2
>   "1"  "VAL1" "2"  "0" # <-
compare ID1,VAL1
>   "2"  "VAL2" "3"  "2" # <-
comapre ID2,VAL2
>   "3"  "VAL3" "4"  "2" # <-
compare ID3,VAL3
>
> s1 <- read.table("sample1.txt",header=T,sep=',')
> s2 <- read.table("sample2.txt",header=T,sep=',')
> comp_data(df1,df2)
>
> sample1.txt
>   ID,VAL1,VAL2,VAL3
>   ID1,2,2,3
>   ID2,0,3,3
>   ID3,0,2,4
>
> sample2.txt
>   ID1,0,2,3
>   ID2,0,2,3
>   ID3,0,2,2
>
> I created the functions, but I got the following error.
> Could you tell me how to add new frame data?
> Or alternative way?
>
>   1: In `[<-.factor`(`*tmp*`, ri, value = "3") :
>     invalid factor level, NA generated
>   2: In `[<-.factor`(`*tmp*`, ri, value = "VAL3") :
>     invalid factor level, NA generated
>   3: In `[<-.factor`(`*tmp*`, ri, value = "4") :
>     invalid factor level, NA generated
>
>
>
>   comp_data <- function(df1,df2) {
>     #
>     # create null data.frame
>     out <- data.frame(matrix(rep(NA,4),nrow=1))[numeric(0), ]
>     colnames(out) <-
c("ID","Site","df1","df2")
>
>     # column names
>     col_names <- colnames(df1)
>
>     # col_size
>     col_size <- ncol(df1)
>     row_size <- nrow(df1)
>
>     for( col in 2:col_size ){
>       for( row in 1:row_size ){
>         if( df1[row,col] != df2[row,col] ){
>           out <-
> rbind(out,c(df1[row,1],col_names[col],df1[row,col],df2[row,col]))
>         }
>       }
>     }
>     out
>   }
>
> Best regards.
>
>       [[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.
________________________________
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Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce
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dosa?en?m shody na v?ech jej?ch n?le?itostech.
- odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost
??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn?
pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn?
osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi
?i osob? j?m zastoupen? zn?m?.

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.

Hiroyuki Sato

2016-Feb-29 11:04 UTC

head link

[R] create function for compare two dataframe.

Hello Petr.

Thank you for replying.
Your step is better than my step!.

I added one step
> s.dcast <- dcast(s.m, ID+variable~dat)
> subset(s.dcast,df1!=df2)   ID variable df1 df2
1 ID1     VAL1   2   0
5 ID2     VAL2   3   2
9 ID3     VAL3   4   2

This output is what I wanted!!.


P.S.

When I asked this question, I used indent for readability.
So maybe it was added extra space.
I executed same command. It has no extra space.
> str(s1)'data.frame': 3 obs. of  4 variables:
 $ ID  : Factor w/ 3 levels "ID1","ID2","ID3": 1 2
3
 $ VAL1: int  2 0 0
 $ VAL2: int  2 3 2
 $ VAL3: int  3 3 4> str(s2)'data.frame': 3 obs. of  4 variables:
 $ ID  : Factor w/ 3 levels "ID1","ID2","ID3": 1 2
3
 $ VAL1: int  0 0 0
 $ VAL2: int  2 2 2
 $ VAL3: int  3 3 2

Best regards.


2016?2?29?(?) 18:16 PIKAL Petr <petr.pikal at precheza.cz>:
> Hi
>
> You does not need to create function, you can use functions already
> available.
>
> > s1<- read.table("clipboard", header=T, sep=",")
> > s2<- read.table("clipboard", sep=",")
>
> You presented second table without names.
> > names(s2) <- names(s1)
>
> > s1
>      ID VAL1 VAL2 VAL3
> 1   ID1    2    2    3
> 2   ID2    0    3    3
> 3   ID3    0    2    4
> > s2
>      ID VAL1 VAL2 VAL3
> 1   ID1    0    2    3
> 2   ID2    0    2    3
> 3   ID3    0    2    2
>
> You need to add a column in which you specify data frame and merge them
> > s1$dat<-"df1"
> > s2$dat<-"df2"
> > s<-merge(s1,s2, all=T)
>
> Now you need to reshape your data
>
> > library(reshape2)
>
> > s.m<-melt(s)
> Using ID, dat as id variables
> > s.m
>       ID dat variable value
> 1    ID1 df1     VAL1     2
> 2    ID2 df2     VAL1     0
> 3    ID2 df1     VAL1     0
> 4    ID3 df2     VAL1     0
> 5    ID3 df1     VAL1     0
> 6    ID1 df2     VAL1     0
> 7    ID1 df1     VAL2     2
> 8    ID2 df2     VAL2     2
> 9    ID2 df1     VAL2     3
> 10   ID3 df2     VAL2     2
> 11   ID3 df1     VAL2     2
> 12   ID1 df2     VAL2     2
> 13   ID1 df1     VAL3     3
> 14   ID2 df2     VAL3     3
> 15   ID2 df1     VAL3     3
> 16   ID3 df2     VAL3     2
> 17   ID3 df1     VAL3     4
> 18   ID1 df2     VAL3     3
>
> And cast the new structure.
> > dcast(s.m, ID+variable~dat)
>       ID variable df1 df2
> 1    ID1     VAL1   2  NA
> 2    ID1     VAL2   2  NA
> 3    ID1     VAL3   3  NA
> 4    ID2     VAL1   0   0
> 5    ID2     VAL2   3   2
> 6    ID2     VAL3   3   3
> 7    ID3     VAL1   0   0
> 8    ID3     VAL2   2   2
> 9    ID3     VAL3   4   2
> 10   ID1     VAL1  NA   0
> 11   ID1     VAL2  NA   2
> 12   ID1     VAL3  NA   3
>
> This was the point that I was rather surprised but I found a reason. Your
> ID variable does not have 3 but four values - although ID1 looks the same,
> in one there is an extra space, therefore you have different ID1 in s1 from
> ID1 in s2.
>
> That is why it is recommended to use dput() for exchanging data with
> others.
>
> > str(s)
> 'data.frame':   6 obs. of  5 variables:
>  $ ID  : Factor w/ 4 levels "  ID1","  ID2",..: 1 2 2 3
3 4
>  $ VAL1: int  2 0 0 0 0 0
>  $ VAL2: int  2 2 3 2 2 2
>  $ VAL3: int  3 3 3 2 4 3
>  $ dat : chr  "df1" "df2" "df1"
"df2" ...
>
> > s1$ID
> [1]   ID1   ID2   ID3
> Levels:   ID1   ID2   ID3
> > s2$ID
> [1] ID1     ID2   ID3
> Levels:   ID2   ID3 ID1
>
> > str(s1)
> 'data.frame':   3 obs. of  5 variables:
>  $ ID  : Factor w/ 3 levels "  ID1","  ID2",..: 1 2 3
>  $ VAL1: int  2 0 0
>  $ VAL2: int  2 3 2
>  $ VAL3: int  3 3 4
>  $ dat : chr  "df1" "df1" "df1"
> > str(s2)
> 'data.frame':   3 obs. of  5 variables:
>  $ ID  : Factor w/ 3 levels "  ID2","  ID3",..: 3 1 2
>  $ VAL1: int  0 0 0
>  $ VAL2: int  2 2 2
>  $ VAL3: int  3 3 2
>  $ dat : chr  "df2" "df2" "df2"
> >
>
> Cheers
> Petr
>
>
> > -----Original Message-----
> > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of
> > Hiroyuki Sato
> > Sent: Monday, February 29, 2016 9:44 AM
> > To: r-help at r-project.org
> > Subject: [R] create function for compare two dataframe.
> >
> > Hello
> >
> > I would like to create a funciton which is create new dataframe for
> > compare reslut of two dataframes.
> >
> >   No.  COLUMN DF1  DF2
> >   "1"  "VAL1" "2"  "0" # <-
compare ID1,VAL1
> >   "2"  "VAL2" "3"  "2" # <-
comapre ID2,VAL2
> >   "3"  "VAL3" "4"  "2" # <-
compare ID3,VAL3
> >
> > s1 <- read.table("sample1.txt",header=T,sep=',')
> > s2 <- read.table("sample2.txt",header=T,sep=',')
> > comp_data(df1,df2)
> >
> > sample1.txt
> >   ID,VAL1,VAL2,VAL3
> >   ID1,2,2,3
> >   ID2,0,3,3
> >   ID3,0,2,4
> >
> > sample2.txt
> >   ID1,0,2,3
> >   ID2,0,2,3
> >   ID3,0,2,2
> >
> > I created the functions, but I got the following error.
> > Could you tell me how to add new frame data?
> > Or alternative way?
> >
> >   1: In `[<-.factor`(`*tmp*`, ri, value = "3") :
> >     invalid factor level, NA generated
> >   2: In `[<-.factor`(`*tmp*`, ri, value = "VAL3") :
> >     invalid factor level, NA generated
> >   3: In `[<-.factor`(`*tmp*`, ri, value = "4") :
> >     invalid factor level, NA generated
> >
> >
> >
> >   comp_data <- function(df1,df2) {
> >     #
> >     # create null data.frame
> >     out <- data.frame(matrix(rep(NA,4),nrow=1))[numeric(0), ]
> >     colnames(out) <-
c("ID","Site","df1","df2")
> >
> >     # column names
> >     col_names <- colnames(df1)
> >
> >     # col_size
> >     col_size <- ncol(df1)
> >     row_size <- nrow(df1)
> >
> >     for( col in 2:col_size ){
> >       for( row in 1:row_size ){
> >         if( df1[row,col] != df2[row,col] ){
> >           out <-
> > rbind(out,c(df1[row,1],col_names[col],df1[row,col],df2[row,col]))
> >         }
> >       }
> >     }
> >     out
> >   }
> >
> > Best regards.
> >
> >       [[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.
> Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav?
> neprodlen? jeho odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie
> vyma?te ze sv?ho syst?mu.
> Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email
> jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat.
> Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi
> ?i zpo?d?n?m p?enosu e-mailu.
>
> V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?:
> - vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en?
> smlouvy, a to z jak?hokoliv d?vodu i bez uveden? d?vodu.
> - a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout;
> Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany
> p??jemce s dodatkem ?i odchylkou.
> - trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve
> v?slovn?m dosa?en?m shody na v?ech jej?ch n?le?itostech.
> - odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za
> spole?nost ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n
> nebo p?semn? pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto
> emailu p??padn? osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich
> existence je adres?tovi ?i osob? j?m zastoupen? zn?m?.
>
> 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.
>
	[[alternative HTML version deleted]]

R help - Feb 2016 - create function for compare two dataframe.

[R] create function for compare two dataframe.

[R] create function for compare two dataframe.

[R] create function for compare two dataframe.