As far as I can tell, you are still doing it wrong. Unless I'm missing some deep magic you are trying to use, the following is not right 
 my $way_lines = Goo::Canvas::Polyline->new($way_group,
  TRUE, $num_points, [\@points]);

#here you have both the $points (assuming its an array_ref of points)
# AND you have a nested array_ref in an array_ref ???
# [ \@points]   ????  where did you come up with that?

[download]
You can only specify 1 array_ref, like $points = \@points and just use $points.

Look closely at the example in Goo::Canvas Waypoint marker w zoom/save to svg and pdf and the man page for PolyLine. There are 2 ways to specify points when creating the PolyLine. One is to drop in an anonymous array_ref of x,y pairs. The other is to set the anonymous array_ref to undef, when creating the PolyLine, then after creation, set the points option to an array_ref. Additionally, if you later want to change(update) the points, the points must be a Goo::Canvas::Points object. The Goo::Canvas::Points object is just an object wrapper around the array_ref (look at my waypoint example closely), but the Goo::Canvas wants it that way.

Remember, the Goo::Canvas is still in development, and the author hasn't tightened up those dangling inconsistencies yet. But you can get it to work, with the steps outlined above.

I'm not really a human, but I play one on earth CandyGram for Mongo

In reply to Re^3: Drawing Shapefiles in Goo::Canvas by zentara
in thread Drawing Shapefiles in Goo::Canvas by deadpickle

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