[R] how to pass defined function with more than one arguments to	apply?
    anoly 
    anoly16b at hotmail.com
       
    Fri May 28 18:05:36 CEST 2004
    
    
  
Dear all:
I meet a problem of apply function. I have a matrix called tb
>tb
   V1 V2 V3
1   0  3  1
2   1  4  0
3   0  3  0
4   0  4  0
5   0  3  1
6   1  4  1
7   1  1  0
8   1  3  0
9   0  1  1
10  0  3  1
I hope to get the number of row that match c(0,3,1)
I do this way:
>length(apply(t(tb) = = c (0,3,1), 2, all))
 I defined a funtion, compare<-function(vector1, vector2){...}. For example,
compare(1:3, 1:3) will return TRUE. compare(1:3,2:4) return FALSE.
Then I hope to call  apply(tb,1,compare). But this can not work, because
apply only pass one argument to compare function. Does anyone know how to
solve this problem?
Thanks so much.
Anoly
    
    
More information about the R-help
mailing list