[R] confusion matrix

[Shi, Tao]

Hi list,

Is there already a function somewhere to output the confusion matrix from two 
input vectors?  "table" always automatically delete rows or columns with all 
0's.  For example, I would like the columns for "10" and "30" added back.

Thanks!

...Tao



      20 40 50 60 70 80 90 100
  10   0  0  1  0  0  0  1   0
  20   1  2  0  4  0  0  0   1
  30   0  0  0  0  0  0  1   1
  40   0  0  1  1  2  0  0   0
  50   0  1  0  0  0  1  0   0
  60   0  0  0  0  0  0  1   1
  70   0  0  1  1  1  1  1   1
  80   0  1  0  0  0  0  0   1
  90   0  0  0  0  0  0  0   3
  100  0  0  0  0  1  0  0   3