# NAME

`    Algorithm::Evolutionary::Individual::Vector - Array as an individual for evolutionary computation`

# SYNOPSIS

```    use Algorithm::Evolutionary::Individual::Vector;
my \$indi = new Algorithm::Evolutionary::Individual::Vector 10 ; # Build random vector individual with length 10
# Each element in the range 0 .. 1
my \$indi2 = new Algorithm::Evolutionary::Individual::Vector 20, -5, 5; #Same, with range between -5 and 5```
```    #Creating a vector step by step. In Perl, there's always more than one way of doing it
my \$indi3 = new Algorithm::Evolutionary::Individual::Vector;
\$indi3->set( {length => 20,
rangestart => -5,
rangeend => 5 } );   #Sets values, but does not build the array
```
```
\$indi3->randomize(); #Creates an array using above parameters```
```    print \$indi3->Atom( 7 );       #Returns the value of the 7th character
\$indi3->Atom( 3 ) = '2.35';       #Sets the value```
`    \$indi3->addAtom( 7.5 ); #Adds a new component to the array at the end`
```    my \$indi4 = Algorithm::Evolutionary::Individual::Vector->fromString( '3.5,4.5, 0.1, 3.2');
#Parses the comma-separated elements of the string and creates a Algorithm::Evolutionary::Individual::Vector from them```
`    my \$indi5 = \$indi4->clone(); #Creates a copy of the individual`
```    my @array = qw( 3.5 4.8 3.3 4.2 0.23); #Tie a vector individual
tie my @vector, 'Algorithm::Evolutionary::Individual::Vector', @array;
print tied( @vector )->asXML();```
```    print \$indi3->asString(); #Prints the individual
print \$indi3->asXML() #Prints it as XML. See L<XML> for more info on this```

# Base Class

Algorithm::Evolutionary::Individual::Base

# DESCRIPTION

Array individual for a EA. Generally used for floating-point arrays. It can be also TIEd so that it can be handled as a normal array.

# METHODS

## new

Creates a new random array individual, with fixed initial length, and uniform distribution of values within a range

## set

Sets values of an individual; takes a hash as input

## randomize

Assigns random values to the elements

## Atom

Gets or sets the value of an atom

Adds an atom at the end

## length

Returns the number of atoms in the individual

## fromString

Similar to a copy ctor; creates a vector individual from a string composed of stuff separated by a separator

## clone

Similar to a copy ctor: creates a new individual from another one

Prints it

## asXML

Prints it as XML. See the Algorithm::Evolutionary::XML OPEAL manual for details.

## Chrom

Sets or gets the array that holds the chromosome. Not very nice, and I would never ever do this in C++

```
```  CVS Info: \$Date: 2002/07/23 11:47:57 \$