Draw labels at specified positions.
   
   drawLabels(X, Y, LBL)
   Draws labels LBL at positions given by X and Y.
   LBL can be either a string array, or a number array. In this case,
   string are created by using sprintf function, using the '%.2f' format.

   drawLabels(POS, LBL)
   Draws labels LBL at position specified by POS, where POS is a N-by-2
   numeric array. 

   drawLabels(..., NUMBERS, FORMAT)
   Creates labels using sprintf function, with the mask given by FORMAT 
   (e.g. '%03d' or '5.3f'), and the corresponding values.

   drawLabels(..., PNAME, PVALUE)
   Specifies additional parameters to the created labels. See 'text'
   properties for available values.

Package: matgeom