[R] filling columns in frame according to another column frame

Luis Ridao Cruz Luisr at frs.fo
Wed Feb 23 15:14:51 CET 2005


R-help,

I have a frame which I want to fill up conditioning to another data
frame column.

The one I want to fill up is as follows (basically an empty one):

> test2

     cm 0   1   2   3   4   5   6   7   8   9  10  11 12 13 14 15
     1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1
     2   2   2   2   2   2   2   2   2   2   2   2   2   2   2   2   2
     3   3   3   3   3   3   3   3   3   3   3   3   3   3   3   3   3
     4   4   4   4   4   4   4   4   4   4   4   4   4   4   4   4   4
     5   5   5   5   5   5   5   5   5   5   5   5   5   5   5   5   5
     6   6   6   6   6   6   6   6   6   6   6   6   6   6   6   6   6
     7   7   7   7   7   7   7   7   7   7   7   7   7   7   7   7   7
     8   8   8   8   8   8   8   8   8   8   8   8   8   8   8   8   8
     9   9   9   9   9   9   9   9   9   9   9   9   9   9   9   9   9

The other looks like :

> test1

   cm 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
   38 0 0 1 0 0 0 6 0 0 0  0  0  0  0  0  0
   39 0 0 1 0 0 0 0 0 0 0  0  0  6  0  0  0
   40 0 0 1 0 0 0 0 0 0 0  0  0  0  0  0  0
   41 0 0 2 0 0 0 0 0 0 0  6  0  0  0  0  0
   43 0 0 1 0 0 0 4 0 0 0  0  0  0  0  0  0
   44 0 0 4 0 0 0 5 0 0 0  0  0  0  0  0  0
   45 0 0 2 0 0 0 0 0 0 0  6  0  0  0  0  0
   47 0 0 3 0 0 0 0 0 0 0  0  0  0  0  0  0
   48 0 0 2 0 0 0 0 0 0 6  0  0  0  0  0  0
   49 0 0 2 0 0 0 0 0 0 6  0  0  0  0  0  0
   50 0 0 3 0 0 0 0 0 0 3  0  0  0  0  0  0
   51 0 0 2 0 0 0 0 0 0 3  0  0  0  0  0  0

Length of both frames are different ( test2 = 150 and test1 = 70 )
The key column is 'cm'

I have tried someting (fill column '3' in test2):

test2 [, '3' ]<-
ifelse ( test2$'cm'  %in% test1$'cm' , test1$'3' , 0)

but the result is wrong.

Any suggestions?

Thanks in advance


> version
         _              
platform i386-pc-mingw32
arch     i386           
os       mingw32        
system   i386, mingw32  
status                  
major    2              
minor    0.1            
year     2004           
month    11             
day      15             
language R




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