 Usage:  mypie = grpie (x,[distance])  
 
 Input:

  x                      n x 2 vector 
                         the first column contains the data 
                         the second column contains the frequencies of 
                         
  distance               n x 1 vector 
                         contains distances between sectors and origin 
                         
 Output:

  mypie                  composed graphical object 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
