[R] how to combine unequal rows and columns in R

[arun]

HI,
If you use ?join(), it will preserve the order of the first dataframe.

library(plyr)
df3<-rbind.fill(crosspries[[1]],crosspries[[2]])
template2<-read.table(text=outer(unique(df3[,1]),unique(df3[,2]),FUN=paste),sep="",stringsAsFactors=F)
names(template2)<-names(df3[1:2])
res1<-join(template2,df3,by=c("Product","Year_Month"),type="full")

 res1
#   Product Year_Month prod1 prod2
#1        A     201208     1    NA
#2        B     201208     2    NA
#3        C     201208     1    NA
#4        D     201208    NA    NA
#5        F     201208    NA    NA
#6        A     201209     1     1
#7        B     201209     2     2
#8        C     201209    NA    NA
#9        D     201209     1     1
#10       F     201209     2     1
A.K.


----- Original Message -----
From: Tammy Ma <metal_licaling at live.com>
To: "r-help at r-project.org" <r-help at r-project.org>
Cc: 
Sent: Thursday, January 24, 2013 6:25 AM
Subject: [R] how to combine unequal rows and columns in R


HI, 


I have the following list:

crosspries
$crosspries[[1]]
       Product         Year_Month   prod1
          A                  201208        1
          B                  201208        2
          C                  201208        1


$crosspries[[2]]
     Product       Year_Month    prod1   prod2
        A               201209         1          1
        B               201209         2          2
        D              201209          1          1
        F              201209          2          1

I want to get the following dataframe:


Product   Year_Month     prod1    prod2
   A         201208             1           NA
   B          201208             2           NA
  C          201208              1           NA
  D           201208             NA          NA
  F            201208             NA          NA
  A         201209             1             1
  B         201209             2             2
  C        201209             NA           NA
  D        201209             1              1
  F        201209             2              1



How can I get it in r?


Thanks.

Kind regards,
Tammy








                          
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