Class: Bio::Nexus::DistancesBlock

Inherits:
GenericBlock show all
Defined in:
lib/bio/db/nexus.rb

Overview

DESCRIPTION

Bio::Nexus::DistancesBlock represents a distances nexus block.

Example of Distances block:

Begin Distances;

Dimensions nchar=20 ntax=5;
Format Triangle=Upper;
Matrix
 taxon_1 0.0 1.0 2.0 4.0 7.0
 taxon_2 1.0 0.0 3.0 5.0 8.0
 taxon_3 3.0 4.0 0.0 6.0 9.0
 taxon_4 7.0 3.0 1.0 0.0 9.5
 taxon_5 1.2 1.3 1.4 1.5 0.0;

End;

USAGE

require 'bio/db/nexus'

# Create a new parser:
nexus = Bio::Nexus.new( nexus_data_as_string )

# Get distances block(s):   
distances_blocks = nexus.get_distances_blocks
# Get matrix as Bio::Nexus::NexusMatrix object:
matrix = distances_blocks[ 0 ].get_matrix
# Get value (column 0 are names):
val = matrix.get_value( 1, 5 )

Constant Summary collapse

TRIANGLE = 
"Triangle"

Instance Method Summary collapse

Methods inherited from GenericBlock

#add_token, #get_name, #get_tokens, #to_s

Constructor Details

#initialize(name) ⇒ DistancesBlock

Creates a new DistancesBlock object named ‘name’.

Arguments:

  • (required) name: String



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# File 'lib/bio/db/nexus.rb', line 1332

def initialize( name )
  super( name )        
  @number_of_taxa = 0
  @number_of_characters = 0
  @triangle = String.new
  @matrix = NexusMatrix.new
end

Instance Method Details

#get_matrix ⇒ Object

Gets the matrix.

Returns

Bio::Nexus::NexusMatrix



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# File 'lib/bio/db/nexus.rb', line 1391

def get_matrix
  @matrix
end

#get_number_of_characters ⇒ Object

Gets the “number of characters” property.

Returns

Integer



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# File 'lib/bio/db/nexus.rb', line 1377

def get_number_of_characters
  @number_of_characters
end

#get_number_of_taxa ⇒ Object

Gets the “number of taxa” property.

Returns

Integer



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# File 'lib/bio/db/nexus.rb', line 1370

def get_number_of_taxa
  @number_of_taxa
end

#get_triangle ⇒ Object

Gets the “triangle” property.

Returns

String



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# File 'lib/bio/db/nexus.rb', line 1384

def get_triangle
  @triangle
end

#set_matrix(matrix) ⇒ Object

Sets the matrix.

Arguments:

  • (required) matrix: Bio::Nexus::NexusMatrix



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# File 'lib/bio/db/nexus.rb', line 1423

def set_matrix( matrix )
  @matrix = matrix
end

#set_number_of_characters(number_of_characters) ⇒ Object

Sets the “number of characters” property.

Arguments:

  • (required) number_of_characters: Integer



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# File 'lib/bio/db/nexus.rb', line 1407

def set_number_of_characters( number_of_characters )
  @number_of_characters = number_of_characters
end

#set_number_of_taxa(number_of_taxa) ⇒ Object

Sets the “number of taxa” property.

Arguments:

  • (required) number_of_taxa: Integer



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# File 'lib/bio/db/nexus.rb', line 1399

def set_number_of_taxa( number_of_taxa )
  @number_of_taxa = number_of_taxa
end

#set_triangle(triangle) ⇒ Object

Sets the “triangle” property.

Arguments:

  • (required) triangle: String



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# File 'lib/bio/db/nexus.rb', line 1415

def set_triangle( triangle )
  @triangle = triangle
end

#to_nexus ⇒ Object

Returns a String describing this block as nexus formatted data.

Returns

String



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# File 'lib/bio/db/nexus.rb', line 1343

def to_nexus
  line_1 = String.new
  line_1 << DIMENSIONS  
  if ( Nexus::Util::larger_than_zero( get_number_of_taxa ) )
    line_1 << " " <<  NTAX << "=" << get_number_of_taxa
  end
  if ( Nexus::Util::larger_than_zero( get_number_of_characters ) )
    line_1 << " " <<  NCHAR << "=" << get_number_of_characters
  end
  line_1 << DELIMITER
  
  line_2 = String.new
  line_2 << FORMAT  
  if ( Nexus::Util::longer_than_zero( get_triangle ) )
    line_2 << " " << TRIANGLE << "=" << get_triangle
  end
  line_2 << DELIMITER
  
  line_3 = String.new
  line_3 << MATRIX 
  Nexus::Util::to_nexus_helper( DISTANCES_BLOCK, [ line_1, line_2, line_3 ] +
                                get_matrix.to_nexus_row_array( " " ) )
end