GAMS Equation. More...

Inheritance diagram for Equation:

GAMS Equation.

Represents a GAMS Equation.

Example:

c = Container();
e2 = symbol.Equation.construct(c, 'e2', 'l', {'*', '*'});
e3 = symbol.Equation.construct(c, 'e3', EquationType.EQ, '*', 'description', 'equ e3');

See also: Equation, Container.addEquation, EquationType

Public Member Functions
function	copy (in obj, in varargin)
	Copies symbol to destination container.

Public Member Functions inherited from Abstract
function	copy (in obj, in varargin)
	(Abstract) Copies symbol to destination container

function	equals (in obj, in symbol)
	Checks equivalence with other symbol.

function	setRecords (in obj, in varargin)
	Sets symbol records in supported format.

function	transformRecords (in obj, in target_format)
	Transforms symbol records into given format.

function	isValid (in obj, in varargin)
	Checks correctness of symbol.

function	getDomainViolations (in obj, in varargin)
	Get domain violations.

function	resolveDomainViolations (in obj, in varargin)
	Extends domain sets in order to resolve domain violations.

function	getSparsity (in obj)
	Returns the sparsity of symbol records.

function	countDuplicateRecords (in obj)
	Counts duplicate records.

function	findDuplicateRecords (in obj, in varargin)
	Finds duplicate records.

function	hasDuplicateRecords (in obj)
	Checks if duplicate records exist.

function	dropDuplicateRecords (in obj, in varargin)
	Drops duplicate records.

function	countDomainViolations (in obj)
	Counts domain violations.

function	findDomainViolations (in obj)
	Counts domain violations.

function	hasDomainViolations (in obj)
	Checks if duplicate records exist.

function	dropDomainViolations (in obj)
	Drops duplicate records in symbols.

function	getMaxValue (in obj, in varargin)
	Returns the largest value in records.

function	getMinValue (in obj, in varargin)
	Returns the smallest value in records.

function	getMeanValue (in obj, in varargin)
	Returns the mean value over all values in records.

function	getMaxAbsValue (in obj, in varargin)
	Returns the largest absolute value in records.

function	countNA (in obj, in varargin)
	Returns the number of GAMS NA values in records.

function	countUndef (in obj, in varargin)
	Returns the number of GAMS UNDEF values in records.

function	countEps (in obj, in varargin)
	Returns the number of GAMS EPS values in records.

function	countPosInf (in obj, in varargin)
	Returns the number of GAMS PINF (positive infinity) values in records.

function	countNegInf (in obj, in varargin)
	Returns the number of GAMS MINF (negative infinity) values in records.

function	getNumberRecords (in obj)
	Returns the number of GDX records (not available for matrix formats)

function	getNumberValues (in obj, in varargin)
	Returns the number of values stored for this symbol.

function	dropDefaults (in obj, in varargin)
	Drops default values from records.

function	dropNA (in obj, in varargin)
	Drops NA values from records.

function	dropUndef (in obj, in varargin)
	Drops Undef values from records.

function	dropMissing (in obj, in varargin)
	Drops NaN (includes NA and Undef) values from records.

function	dropEps (in obj, in varargin)
	Drops Eps values from records.

function	getUELs (in obj, in varargin)
	Returns the UELs used in this symbol.

function	setUELs (in obj, in varargin)
	Sets UELs.

function	reorderUELs (in obj, in varargin)
	Reorders UELs.

function	addUELs (in obj, in varargin)
	Adds UELs to the symbol.

function	removeUELs (in obj, in varargin)
	Removes UELs from the symbol.

function	renameUELs (in obj, in varargin)
	Renames UELs in the symbol.

function	lowerUELs (in obj, in varargin)
	Converts UELs to lower case.

function	upperUELs (in obj, in varargin)
	Converts UELs to upper case.

Static Public Member Functions
static function	construct (in varargin)
	Constructs a GAMS Equation.

static function	describe (in symbols)
	Returns an overview over all equations given.

Public Attributes
Property	type
	Equation type, e.g. `leq`

Public Attributes inherited from Abstract
Property	container
	Container the symbol is stored in.

Property	name
	Symbol name.

Property	description
	Symbol description.

Property	dimension
	Dimension of symbol (in [0,20])

Property	size
	Shape of symbol (length == dimension)

Property	domain
	Domain of symbol (length == dimension)

Property	domain_labels
	Domain labels in records.

Property	domain_forwarding
	Enables domain entries in records to be recursively added to the domains in case they are not present in the domains already.

Property	records
	Storage of symbol records.

Property	format
	Format in which records are stored in.

Property	modified
	Flag to indicate modification.

Private Attributes
Property	default_values
	Equation default values.

Property	indexed
	Flag if symbol can be used in indexed mode.

Member Function Documentation

◆ construct()

static function construct ( in varargin )

static

Constructs a GAMS Equation.

See Creating a Symbol for more information.

Required Arguments:

container (Container): Container object this symbol should be stored in
name (string): Name of equation
type (string, int or EquationType): Specifies the variable type, either as string, as integer given by any of the constants in EquationType or EquationType.

Optional Arguments:

domain (cellstr or Set): List of domains given either as string or as reference to a symbol.Set object. Default is {} (for scalar).

Parameter Arguments:

records: Equation records. Default is [].
description (string): Description of symbol. Default is "".
domain_forwarding (logical): If true, domain entries in records will recursively be added to the domains in case they are not present in the domains already. With a logical vector domain forwarding can be enabled/disabled independently for each domain. Default: false.

Example:

c = Container();
e2 = symbol.Equation.construct(c, 'e2', 'l', {'*', '*'});
e3 = symbol.Equation.construct(c, 'e3', EquationType.EQ, '*', 'description', 'equ e3');

See also: Equation, Container.addEquation, EquationType

◆ copy()

function copy	(	in	obj,
		in	varargin
	)

Copies symbol to destination container.

Symbol domains are downgraded to relaxed if the destination container does not have equivalent domain sets, see also Symbol Domain.

Required Arguments:

destination (Container): Destination Container

Optional Arguments:

overwrite (bool): Overwrites symbol with same name in destination if true. Default: false.

◆ describe()

static function describe ( in symbols )

static

Returns an overview over all equations given.

See Symbol Overview for more information.

Required Arguments:

symbols (list): List of equations to include.

The overview is in form of a table listing for each symbol its main characteristics and some statistics.

Public Member Functions

Static Public Member Functions

Public Attributes

Private Attributes

Member Function Documentation

◆ construct()

◆ copy()

◆ describe()