Just looking at the documentation, the SPT_Dijkstra should be called as a method of the graph:
   $sptg = $g->SPT_Dijkstra($root)

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You are calling it with two arguments, both being vertices.

In reply to Re: Using Perl Graphs (Data Structure) and SPT_Dijkstra Routine by choroba
in thread Using Perl Graphs (Data Structure) and SPT_Dijkstra Routine by PerlApprentice

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