[R] Insert rows in between dataframes

[John Kane]

There may be a much cleaner and better way but just split the data.frame into two parts, create the NA rows as another data.frame and use rbind to put them back together again.

Example
#=======================================================================
(mydata <- data.frame(aa=letters[1:5], bb=1:5))
topdata <- mydata[1:3,]
bottomdata <- mydata[4:5,]
nadata <- data.frame(aa=rep(NA,2),bb=rep(NA,2))

d1 <- rbind(topdata,nadata)
d2 <- rbind(d1, bottomdata)

#=======================================================================
--- On Thu, 8/20/09, Moumita Das <das.moumita.online at gmail.com> wrote:

> From: Moumita Das <das.moumita.online at gmail.com>
> Subject: [R] Insert rows in between dataframes
> To: r-help at r-project.org
> Received: Thursday, August 20, 2009, 7:18 AM
> Hi all,
> 
> Can anyone suggest me how to insert rows in between data
> frames and also
> keep the ordering of row numbers correct?
> 
>                
>          
>    Estimate         
>    Std. Error       
>     t
> value   Pr(>|t|)
> 
> recmeanC2             
>         9.275880e-17   
> 6.322780e-17   1.467057e+00
> 0.14349903
> 
> recmeanC3             
>        
> 1.283534e-17   2.080644e-17   
> 6.168929e-01
> 0.53781390
> 
> recmeanC4 -             
>      3.079466e-17   
> 2.565499e-17  -1.200338e+00
> 0.23103743
> 
> i1               
>                
>             5.000000e-01
> 1.036197e-17   4.825338e+16
> 0.00000000
> 
> i2               
>                
>          -5.630739e-18
> 1.638267e-17  -3.437010e-01
> 0.73133282
> 
> i3               
>                
>          4.291387e-18
> 1.207522e-17   3.553879e-01
> 0.72257050
> 
> i4               
>                
>          1.472662e-17
> 1.423051e-17   1.034863e+00
> 0.30163897
> 
> i5               
>                
>        5.000000e-01   
> 1.003323e-17
>  4.983441e+16
> 0.00000000
> 
> i6               
>                
>        5.147966e-18 
>    1.569095e-17
>  3.280850e-01
> 0.74309614
> 
> i7               
>                
>      
>    1.096044e-17   1.555829e-17
>  7.044760e-01
> 0.48173041
> 
> i8               
>                
>         -1.166290e-18   
> 1.287370e-17
> -9.059482e-02 0.92788026
> 
> i9               
>                
>      
>    1.627371e-17   1.540567e-17
>  1.056345e+00
> 0.29173427
> 
> i10               
>                
>        
> 4.001692e-18   1.365740e-17
>  2.930053e-01
> 0.76973827
> 
> i12               
>                
>        
> -1.052843e-17   1.324484e-17
> -7.949081e-01 0.42735000
> 
> i13               
>                
>        
> 2.571236e-17   1.357336e-17
>  1.894325e+00
> 0.05922715
> 
> This is my coeffcients table.Here  I want ti inser t
> rows with value NA in
> all columns in between and after  the last row.After
> last  row I can insert
> using rbind.But how will I enter row in between so that the
> order also
> doesn’t change.
> 
> I need this to be generated :---
> 
> Estimate         
>    Std. Error       
>     t value   Pr(>|t|)
> 
> recmeanC2             
>         9.275880e-17   
> 6.322780e-17   1.467057e+00
> 0.14349903
> 
> recmeanC3             
>        
> 1.283534e-17   2.080644e-17   
> 6.168929e-01
> 0.53781390
> 
> recmeanC4 -             
>      3.079466e-17   
> 2.565499e-17  -1.200338e+00
> 0.23103743
> 
> i1               
>                
>             5.000000e-01
> 1.036197e-17   4.825338e+16
> 0.00000000
> 
> i2               
>                
>          -5.630739e-18
> 1.638267e-17  -3.437010e-01
> 0.73133282
> 
> i3               
>                
>          4.291387e-18
> 1.207522e-17   3.553879e-01
> 0.72257050
> 
> i4               
>                
>          1.472662e-17
> 1.423051e-17   1.034863e+00
> 0.30163897
> 
> i5               
>                
>        5.000000e-01   
> 1.003323e-17
>  4.983441e+16
> 0.00000000
> 
> i6               
>                
>        5.147966e-18 
>    1.569095e-17
>  3.280850e-01
> 0.74309614
> 
> i7               
>                
>      
>    1.096044e-17   1.555829e-17
>  7.044760e-01
> 0.48173041
> 
> i8               
>                
>         -1.166290e-18   
> 1.287370e-17
> -9.059482e-02 0.92788026
> 
> i9               
>                
>      
>    1.627371e-17   1.540567e-17
>  1.056345e+00
> 0.29173427
> 
> 
> i10               
>                
>        
> 4.001692e-18   1.365740e-17
>  2.930053e-01
> 0.76973827
> 
> i11               
>                
>         NA
> NA               
>                
>           NA
> NA
> 
> i12               
>                
>        
> -1.052843e-17   1.324484e-17
> -7.949081e-01 0.42735000
> 
> i13               
>                
>        
> 2.571236e-17   1.357336e-17
>  1.894325e+00
> 0.05922715
> 
> i14               
>                
>          NA
> NA               
>                
>           NA
> NA
> 
> 
> 
> i15               
>                
>          NA
> NA               
>                
>           NA
> NA
> 
> 
> 
> 
> 
>  rbind after row number i10 will change row number
> i12  to  have NA,Na,NA.Na
> values.
> 
> 
> -- 
> Thanks in advance
> Moumita
> 
>     [[alternative HTML version deleted]]
> 
> 
> -----Inline Attachment Follows-----
> 
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> and provide commented, minimal, self-contained,
> reproducible code.
> 


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