CAT2BIN converts categorical into binary data 
   each category of each column in D is converted into a logical column
 
   B = cat2bin(C); 
   [B,BinLabel] = cat2bin(C,Label); 
   [B,BinLabel] = cat2bin(C,Label,MODE)

  C        categorical data 
  B        binary data 
  Label    description of each column in C
  BinLabel description of each column in B
  MODE     default [], ignores NaN
           'notIgnoreNAN' includes binary column for NaN 
           'IgnoreZeros'  zeros do not get a separate category 
           'IgnoreZeros+NaN' zeros and NaN are ignored

  example: 
     cat2bin([1;2;5;1;5]) results in 
             1     0     0
             0     1     0
             0     0     1
             1     0     0
             0     0     1

Package: nan