[vtkusers] Extract continous line from polydata

[Praveen C]

I have a polydata containing a closed polygon. The lines are not ordered
contiguously


LINES 209 627
2 0 1
2 2 3
2 4 5
2 6 7
2 8 9
2 10 11
2 12 13
2 14 15
2 16 17
2 18 19
2 20 21
2 22 20
2 23 24
2 25 26
.
.
.

I want to order them continuously and extract the coordinates of the
vertices. How can I do this ?
Thanks
praveen

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