NAME
    WeightAndMassDescriptors

SYNOPSIS
    use MolecularDescriptors::WeightAndMassDescriptors;

    use MolecularDescriptors::WeightAndMassDescriptors qw(:all);

DESCRIPTION
    WeightAndMassDescriptors class provides the following methods:

    new, GenerateDescriptors, GetDescriptorNames,
    StringifyWeightAndMassDescriptors

    WeightAndMassDescriptors is derived from MolecularDescriptors class
    which in turn is derived from ObjectProperty base class that provides
    methods not explicitly defined in WeightAndMassDescriptors,
    MolecularDescriptors or ObjectProperty classes using Perl's AUTOLOAD
    functionality. These methods are generated on-the-fly for a specified
    object property:

        Set<PropertyName>(<PropertyValue>);
        $PropertyValue = Get<PropertyName>();
        Delete<PropertyName>();

    WeightAndMassDescriptors calculates molecular weight and exact mass
    descriptors using methods available in Molecule class.

  METHODS
    new
            $NewWeightAndMassDescriptors = new MolecularDescriptors::
                                           WeightAndMassDescriptors(
                                           %NamesAndValues);

        Using specified *WeightAndMassDescriptors* property names and values
        hash, new method creates a new object and returns a reference to
        newly created WeightAndMassDescriptors object. By default, the
        following properties are initialized:

            Molecule = ''
            Type = 'WeightAndMass'
            WeightPrecision = 2;
            MassPrecision = 4;

            @DescriptorNames = ('MolecularWeight', 'ExactMass')
            @DescriptorValues = ('None', 'None')

        Examples:

            $WeightAndMassDescriptors = new MolecularDescriptors::
                                        WeightAndMassDescriptors(
                                        'Molecule' => $Molecule);

            $WeightAndMassDescriptors = new MolecularDescriptors::
                                        WeightAndMassDescriptors();

            $WeightAndMassDescriptors->SetMolecule($Molecule);
            $WeightAndMassDescriptors->GenerateDescriptors();
            print "WeightAndMassDescriptors: $WeightAndMassDescriptors\n";

    GenerateDescriptors
            $WeightAndMassDescriptors->GenerateDescriptors();

        Calculates molecular weight and exact mass of a molecule and returns
        *WeightAndMassDescriptors*.

    GetDescriptorNames
            @DescriptorNames = $WeightAndMassDescriptors->GetDescriptorNames();
            @DescriptorNames = MolecularDescriptors::WeightAndMassDescriptors::
                               GetDescriptorNames();

        Returns all available descriptor names as an array.

    SetMassPrecision
            $WeightAndMassDescriptors->SetMassPrecision($Precision);

        Sets precision for calculated exact mass value and returns
        *WeightAndMassDescriptors*.

    SetWeightPrecision
            $WeightAndMassDescriptors->SetWeightPrecision($Precision);

        Sets precision for calculated molecular weight value and returns
        *WeightAndMassDescriptors*.

    StringifyWeightAndMassDescriptors
            $String = $WeightAndMassDescriptors->StringifyWeightAndMassDescriptors();

        Returns a string containing information about
        *WeightAndMassDescriptors* object.

AUTHOR
    Manish Sud <msud@san.rr.com>

SEE ALSO
    MolecularDescriptors.pm, MolecularDescriptorsGenerator.pm

COPYRIGHT
    Copyright (C) 2015 Manish Sud. All rights reserved.

    This file is part of MayaChemTools.

    MayaChemTools is free software; you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 3 of the License, or (at
    your option) any later version.

