DataFileIF Class Reference

#include <DataFileIF.H>

Inheritance diagram for DataFileIF:

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Collaboration diagram for DataFileIF:

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List of all members.

Detailed Description

This implicit function reads data from a file and produces function values from the data read. The data lies on a rectilinear grid where the number of grid points in each direction, the spacing, and the origin are specified (by the user or in the file). Function values within the data region are obtained using trilinear interpolation. Function values outside the data region are the maximum value of the data read.

The data can be read from standard input or a named file. The data can have no header, an ASCII header containing the number of grid points in each direction:

         numX numY [numZ]

or an ASCII header containing the above information followed by the data spacing in each direction and the origin of the data - both in physical coordinates:

         deltaX  deltaY  [deltaZ]
         originX originY [originZ]

Following any header is the data either in ASCII or binary. The data is assumed to vary most rapidly in the x coordinate, then the y coordinate, and, finally, in the z coordinate (for 3D data).


Public Types
enum	DataType { Invalid = -1, ASCII = 0, Binary, NUMDATATYPES }
Public Member Functions
	DataFileIF (const DataFileIF::DataType &a_dataType, const Real &a_value, const bool &a_inside)
	DataFileIF (const char *const a_filename, const DataFileIF::DataType &a_dataType, const Real &a_value, const bool &a_inside)
	DataFileIF (const DataFileIF::DataType &a_dataType, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
	DataFileIF (const char *const a_filename, const DataFileIF::DataType &a_dataType, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
	DataFileIF (const DataFileIF::DataType &a_dataType, const IntVect &a_num, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
	DataFileIF (const char *const a_filename, const DataFileIF::DataType &a_dataType, const IntVect &a_num, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
	DataFileIF (const DataFileIF &a_inputIF)
	Copy constructor.
	DataFileIF (const RefCountedPtr< FArrayBox > a_data, const Real &a_noDataValue, const IntVect &a_num, const RealVect &a_spacing, const RealVect &a_origin, const Real &a_value, const bool &a_inside)
virtual	~DataFileIF ()
	Destructor.
virtual void	GetHeader (IntVect &a_num, RealVect &a_spacing, RealVect &a_origin) const
virtual void	GetParams (Real &a_value, bool &a_inside) const
virtual void	SetParams (const Real &a_value, const bool &a_inside)
virtual void	SetNoDataValue (const Real &a_value)
virtual Real	value (const RealVect &a_point) const
virtual BaseIF *	newImplicitFunction () const
Protected Member Functions
void	OpenFile (ifstream &a_file, const char *const a_filename)
void	CloseFile (ifstream &a_file)
void	ReadMinHeader (IntVect &a_num, istream &a_file)
void	ReadFullHeader (IntVect &a_num, RealVect &a_spacing, RealVect &a_origin, istream &a_file)
RefCountedPtr< FArrayBox >	ReadData (Real &a_maxValue, istream &a_file, const DataFileIF::DataType &a_dataType, const IntVect &a_num)
void	MakeCorners (void)
Protected Attributes
IntVect	m_num
RealVect	m_spacing
RealVect	m_origin
Real	m_value
bool	m_inside
RefCountedPtr< FArrayBox >	m_data
Real	m_noDataValue
IntVectSet	m_corners
Private Member Functions
	DataFileIF ()
void	operator= (const DataFileIF &a_inputIF)

Member Enumeration Documentation

enum DataFileIF::DataType

Type of data being read

Enumerator:

Invalid
ASCII
Binary
NUMDATATYPES

Constructor & Destructor Documentation

DataFileIF::DataFileIF	(	const DataFileIF::DataType &	a_dataType,
		const Real &	a_value,
		const bool &	a_inside
	)

Constructor specifying the form of the data (a_dataType - ASCII or Binary), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from standard input and a complete ASCII header (see above) is excepted.

DataFileIF::DataFileIF	(	const char *const	a_filename,
		const DataFileIF::DataType &	a_dataType,
		const Real &	a_value,
		const bool &	a_inside
	)

Constructor specifying filename (a_filename), the form of the data (a_dataType - ASCII or Binary), level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from the file named and a complete ASCII header (see above) is expected.

DataFileIF::DataFileIF	(	const DataFileIF::DataType &	a_dataType,
		const RealVect &	a_spacing,
		const RealVect &	a_origin,
		const Real &	a_value,
		const bool &	a_inside
	)

Constructor specifying the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from standard input and an ASCII header (see above) containing the number of grid points in each direction is excepted.

DataFileIF::DataFileIF	(	const char *const	a_filename,
		const DataFileIF::DataType &	a_dataType,
		const RealVect &	a_spacing,
		const RealVect &	a_origin,
		const Real &	a_value,
		const bool &	a_inside
	)

Constructor specifying filename (a_filename), the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from the file named and an ASCII header (see above) containing the number of grid points in each direction is excepted.

DataFileIF::DataFileIF	(	const DataFileIF::DataType &	a_dataType,
		const IntVect &	a_num,
		const RealVect &	a_spacing,
		const RealVect &	a_origin,
		const Real &	a_value,
		const bool &	a_inside
	)

Constructor specifying the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), the number of grid points in each direction (a_num), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from standard input and no ASCII header (see above) is excepted.

DataFileIF::DataFileIF	(	const char *const	a_filename,
		const DataFileIF::DataType &	a_dataType,
		const IntVect &	a_num,
		const RealVect &	a_spacing,
		const RealVect &	a_origin,
		const Real &	a_value,
		const bool &	a_inside
	)

Constructor specifying filename (a_filename), the form of the data (a_dataType - ASCII or Binary), the spacing (a_spacing), the physical origin (a_origin), the number of grid points in each direction (a_num), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside). Data is read from the file named and no ASCII header (see above) is excepted.

DataFileIF::DataFileIF ( const DataFileIF & a_inputIF )

Copy constructor.

DataFileIF::DataFileIF	(	const RefCountedPtr< FArrayBox >	a_data,
		const Real &	a_noDataValue,
		const IntVect &	a_num,
		const RealVect &	a_spacing,
		const RealVect &	a_origin,
		const Real &	a_value,
		const bool &	a_inside
	)

This is used by the factory (see below) to create a new object. All objects created in this way share a refcounted pointer to their data.

Constructor specifying a refcounted pointer to the data (a_data), the no data value (a_noDataValue), the spacing (a_spacing), the physical origin (a_origin), the number of grid points in each direction (a_num), a level set value (a_value), and whether inside the domain is where data is less than the level set value (a_inside).

virtual DataFileIF::~DataFileIF ( ) [virtual]

Destructor.

DataFileIF::DataFileIF ( ) [inline, private]

References MayDay::Error().

Member Function Documentation

virtual void DataFileIF::GetHeader	(	IntVect &	a_num,
		RealVect &	a_spacing,
		RealVect &	a_origin
	)			const `[virtual]`

Return the header information

virtual void DataFileIF::GetParams	(	Real &	a_value,
		bool &	a_inside
	)			const `[virtual]`

Return the parameter information

virtual void DataFileIF::SetParams	(	const Real &	a_value,
		const bool &	a_inside
	)			`[virtual]`

Set the parameter information

virtual void DataFileIF::SetNoDataValue ( const Real & a_value ) [virtual]

value to use when we are outside

virtual Real DataFileIF::value ( const RealVect & a_point ) const [virtual]

Return the value of the function at a_point using trilinear interpolation of the data. If a_point is outside the data then return the maximum data value.

Implements BaseIF.

virtual BaseIF* DataFileIF::newImplicitFunction ( ) const [virtual]

Return a newly allocated derived class. The responsibility for deleting the memory is left to the calling function.

Implements BaseIF.

void DataFileIF::OpenFile	(	ifstream &	a_file,
		const char *const	a_filename
	)			`[protected]`

void DataFileIF::CloseFile ( ifstream & a_file ) [protected]

void DataFileIF::ReadMinHeader	(	IntVect &	a_num,
		istream &	a_file
	)			`[protected]`

void DataFileIF::ReadFullHeader	(	IntVect &	a_num,
		RealVect &	a_spacing,
		RealVect &	a_origin,
		istream &	a_file
	)			`[protected]`

RefCountedPtr<FArrayBox> DataFileIF::ReadData	(	Real &	a_maxValue,
		istream &	a_file,
		const DataFileIF::DataType &	a_dataType,
		const IntVect &	a_num
	)			`[protected]`