You were close. Try this very simplified example to get rid of the warnings: 
#!/usr/bin/perl -l                                       

use strict;
use warnings;
use Data::Dumper::Concise;

use Bio::TreeIO;
use Bio::Tree::TreeFunctionsI;

my $usage = "usage: $0 treeFile \n";
my $treeFile = $ARGV[0] or die $usage;

my $in = Bio::TreeIO->new(
    -format => 'newick',
    -file   => $treeFile,
);

my $tree = $in->next_tree;

my @nodes = $tree->find_node(-id => 'node1'); 
$tree->splice(-remove_id => [0], -keep_id => [1]);
print Dumper( $in );

exit(0);

[download]

In reply to Re: Splice Function for Bioperl Tree editing by Khen1950fx
in thread Splice Function for Bioperl Tree editing by xela07

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