Christopher Fields > BioPerl > Bio::Tools::Phylo::Molphy::Result



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Module Version: 1.006924   Source  


Bio::Tools::Phylo::Molphy::Result - container for data parsed from a ProtML run


  # do not use this object directly, you will get it back as part of a 
  # Molphy parser
  use Bio::Tools::Phylo::Molphy;
  my $parser = Bio::Tools::Phylo::Molphy->new(-file => 'output.protml');
  while( my $r = $parser->next_result ) {
    # r is a Bio::Tools::Phylo::Molphy::Result object

    # print the model name
    print $r->model, "\n";

    # get the substitution matrix
    # this is a hash of 3letter aa codes -> 3letter aa codes representing
    # substitution rate
    my $smat = $r->substitution_matrix;
    print "Arg -> Gln substitution rate is %d\n", 
          $smat->{'Arg'}->{'Gln'}, "\n";

    # get the transition probablity matrix
    # this is a hash of 3letter aa codes -> 3letter aa codes representing
    # transition probabilty
    my $tmat = $r->transition_probability_matrix;
    print "Arg -> Gln transition probablity is %.2f\n", 
          $tmat->{'Arg'}->{'Gln'}, "\n";

    # get the frequency for each of the residues
    my $rfreqs = $r->residue_frequencies;

    foreach my $residue ( keys %{$rfreqs} ) {
       printf "residue %s  expected freq: %.2f observed freq: %.2f\n",
              $residue,$rfreqs->{$residue}->[0], $rfreqs->{$residue}->[1];

    my @trees;
    while( my $t = $r->next_tree ) {
        push @trees, $t;

    print "search space is ", $r->search_space, "\n",
          "1st tree score is ", $trees[0]->score, "\n";

    # writing to STDOUT, use -file => '>filename' to specify a file
    my $out = Bio::TreeIO->new(-format => "newick");
    $out->write_tree($trees[0]); # writing only the 1st tree


A container for data parsed from a ProtML run.


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AUTHOR - Jason Stajich ^



The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _


 Title   : new
 Usage   : my $obj = Bio::Tools::Phylo::Molphy::Result->new();
 Function: Builds a new Bio::Tools::Phylo::Molphy::Result object 
 Returns : Bio::Tools::Phylo::Molphy::Result
 Args    : 


 Title   : model
 Usage   : $obj->model($newval)
 Returns : value of model
 Args    : newvalue (optional)


 Title   : substitution_matrix
 Usage   : my $smat = $result->subsitution_matrix;
 Function: Get the relative substitution matrix calculated in the ML procedure
 Returns : reference to hash of hashes where key is the aa/nt name and value
           is another hash ref which contains keys for all the aa/nt 
 Args    : none


 Title   : transition_probability_matrix
 Usage   : my $matrixref = $molphy->transition_probablity_matrix();
 Function: Gets the observed transition probability matrix
 Returns : hash of hashes of aa/nt transition to each other aa/nt 
 Args    : Transition matrix type, typically
           '1PAM-1.0e05' or '1PAM-1.0e07'


 Title   : residue_frequencies
 Usage   : my %data = $molphy->residue_frequencies()
 Function: Get the modeled and expected frequencies for
           each of the residues in the sequence
 Returns : hash of either aa (protml) or nt (nucml) frequencies
           each key will point to an array reference where
           1st slot is model's expected frequency
           2nd slot is observed frequency in the data
           $hash{'A'}->[0] = 
 Args    : none


 Title   : next_tree
 Usage   : my $tree = $factory->next_tree;
 Function: Get the next tree from the factory
 Returns : L<Bio::Tree::TreeI>
 Args    : none


 Title   : rewind_tree_iterator
 Usage   : $result->rewind_tree()
 Function: Rewinds the tree iterator so that next_tree can be 
           called again from the beginning
 Returns : none
 Args    : none


 Title   : add_tree
 Usage   : $result->add_tree($tree);
 Function: Adds a tree 
 Returns : integer which is the number of trees stored
 Args    : L<Bio::Tree::TreeI>


 Title   : search_space
 Usage   : $obj->search_space($newval)
 Returns : value of search_space
 Args    : newvalue (optional)
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