Dear list,
  I have the following dataset and want to know how many times each value occur in each column.
   >data
        [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
 [1,] -100 -100 -100    0    0    0    0    0    0  -100
 [2,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
 [3,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
 [4,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
 [5,] -100 -100 -100 -100 -100 -100 -100 -100 -100   -50
 [6,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
 [7,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
 [8,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
 [9,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[10,] -100 -100 -100  -50 -100 -100 -100 -100 -100  -100
[11,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[12,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[13,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[14,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[15,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[16,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[17,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[18,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
[19,] -100 -100 -100    0    0    0    0    0    0  -100
[20,] -100 -100 -100 -100 -100 -100 -100 -100 -100  -100
  The result matrix should look like
       -100 0 -50
[1]   20  
[2]   20
[3]   20
[4]   17
[5]   18
[6]   18
[7]   18  and so on 
[8] 
[9] 
[10]
  
How can I do this in R ?
  Thanks alot for your help,
Tom

       
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