READPOLYGONSET Read a set of simple polygons stored in a file.
   
   POLY = readPolygonSet(FILENAME);
   Returns the polygon stored in the file FILENAME.
   Polygons are assumed to be stored in text files, without headers, with
   x and y coordinates packed in two separate lines:
     X11 X12 X13 ... X1N
     Y11 Y12 Y13 ... Y1N
     X21 X22 X23 ... X2N
     Y21 Y22 Y23 ... Y2N

   Each polygon may have a different number of vertices. The result is a
   cell array of polygon, each cell containing a N-by-2 array representing
   the vertex coordinates.

   See also:
   polygons2d

   ---------
   author : David Legland 
   INRA - TPV URPOI - BIA IMASTE
   created the 11/04/2004.

Package: matgeom