/ 
bioperl-run-1.5.2_005-RC
/ Bio::Tools::Run::Phylo::Phylip::ProtPars

NAME

Bio::Tools::Run::Phylo::Phylip::ProtPars - Object for creating a Bio::Tree object from a multiple alignment file or a SimpleAlign object

14 Nov 2002 Shawn Works with Phylip version 3.6

SYNOPSIS

#Create a SimpleAlign object
@params = ('ktuple' => 2, 'matrix' => 'BLOSUM');
$factory = Bio::Tools::Run::Alignment::Clustalw->new(@params);
$inputfilename = 't/data/cysprot.fa';
$aln = $factory->run($inputfilename); # $aln is a SimpleAlign object.

#Create the Tree
#using a threshold value of 30 and id name lengths limit of 30
#note to use id name length greater than the standard 10 in protpars, 
# you will need to modify the protpars source code
$tree_factory = Bio::Tools::Run::Phylo::Phylip::ProtPars->
   new(idlength=>30,threshold=>10,jumble=>"17,10",outgroup=>2);
$tree = $tree_factory->run($aln);

#Or one can pass in a file name containing a multiple alignment 
#in phylip format:

$tree_factory =
  Bio::Tools::Run::Phylo::Phylip::ProtPars->new(idlength=>30,threshold=>10);
$tree = $tree_factory->run("/usr/users/shawnh/COMPARA/prot.phy");

PARAMTERS FOR PROTPARS COMPUTATION

THRESHOLD

Title : THRESHOLD Description : (optional) This sets a threshold such that if the number of steps counted in a character is higher than the threshold, it will be taken to be the threshold value rather than the actual number of steps. You should use a positive real number greater than 1. Please see the documetation from the phylip package for more information.

OUTGROUP

Title : OUTGROUP Description : (optional)

This specifies which species is to be used to root
the tree by having it become the outgroup.  Input
values are integers specifying which species to use.
Defaults to 1

JUMBLE

Title : JUMBLE Description : (optional) This enables you to tell the program to use a random number generator to choose the input order of species. Input values is of the format: seed,iterations eg 17,10 seed: an integer between 1 and 32767 and of the form 4n+1 which means that it must give a remainder of 1 when divided by 4. Each different seed leads to a different sequence of addition of species. By simply changing the random number seed and re-running programs one can look for other, and better trees. iterations: For a value of 10, this will tell the program to try ten different orders of species in constructing the trees, and the results printed out will reflect this entire search process (that is, the best trees found among all 10 runs will be printed out, not the best trees from each individual run).

FEEDBACK

Mailing Lists

User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to one of the Bioperl mailing lists. Your participation is much appreciated.

bioperl-l@bioperl.org                  - General discussion
http://bioperl.org/wiki/Mailing_lists  - About the mailing lists

Reporting Bugs

Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their resolution. Bug reports can be submitted via the web:

http://bugzilla.open-bio.org/

AUTHOR - Shawn Hoon

Email shawnh@fugu-sg.org

CONTRIBUTORS

Email jason-AT-bioperl_DOT_org

APPENDIX

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

program_name

Title   : program_name
Usage   : >program_name()
Function: holds the program name
Returns:  string
Args    : None

program_dir

Title   : program_dir
Usage   : ->program_dir()
Function: returns the program directory, obtiained from ENV variable.
Returns:  string
Args    :

idlength

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

run

 Title   : run 
 Usage   :
	$inputfilename = 't/data/prot.phy';
	$tree = $factory->run($inputfilename);
or
	$seq_array_ref = \@seq_array; @seq_array is array of Seq objs
	$aln = $factory->run($seq_array_ref);
	$tree = $treefactory->run($aln);
 Function: Create a protpars tree from a SimpleAlign object 
 Example :
 Returns : L<Bio::Tree> object 
 Args    : Name of a file containing a multiple alignment in Phylip format
           or an SimpleAlign object 

 Throws an exception if argument is not either a string (eg a
 filename) or a Bio::SimpleAlign object. If
 argument is string, throws exception if file corresponding to string
 name can not be found.

create_tree

Title   : create_tree 
Usage   :
 $inputfilename = 't/data/prot.phy';
 $tree = $factory->create_tree($inputfilename);
or
 $seq_array_ref = \@seq_array; @seq_array is array of Seq objs
 $aln = $factory->align($seq_array_ref);
 $tree = $treefactory->create_tree($aln);
Function: Create a protpars tree from a SimpleAlign object 
Example :
Returns : L<Bio::Tree> object 
Args    : Name of a file containing a multiple alignment in Phylip format
          or an SimpleAlign object 

Throws an exception if argument is not either a string (eg a
filename) or a Bio::SimpleAlign object. If
argument is string, throws exception if file corresponding to string
name can not be found.

_run

Title   :  _run
Usage   :  Internal function, not to be called directly	
Function:   makes actual system call to protpars program
Example :
Returns : Bio::Tree object
Args    : Name of a file containing a set of multiple alignments 
          in Phylip format and a parameter string to be passed to protpars

_setinput()

Title   :  _setinput
Usage   :  Internal function, not to be called directly	
Function:   Create input file for protpars program
Example :
Returns : name of file containing a multiple alignment in Phylip format 
Args    : SimpleAlign object reference or input file name

_setparams()

Title   :  _setparams
Usage   :  Internal function, not to be called directly	
Function:   Create parameter inputs for protpars program
Example :
Returns : parameter string to be passed to protpars
Args    : name of calling object