tokenpos
tokenpos —  returns the tokens positions in a character string.  
Calling sequence
kdf=tokenpos(str [,delimiter])  
Parameters
| str   | : a character string. The string where to search the tokens. | 
| delimiter   | : (optional) a character or a vector of characters. The tokens delimeters. | 
| kdf   | : two columns matrix, first column gives the index of the beginning of the tokens, the second gives the index of the last character of the tokens. | 
Description
kdf=tokenpos(str [,delimiter])  searches the tokens included in the
    string str. The delimiter default value is [" ",<Tab>]
    where <Tab> stands for ascii(9). It returns the indices of the
    first and last characters of each found tokens.
Examples
str='This is a character string';
kdf=tokenpos(str)
first=part(str,kdf(1,1):kdf(1,2))
 
  
See also
strindex, tokens