LSDRasterInfo Class Reference

Object that stores georeferencing information. This information is also stored with the raster, it is seperated here mainly to compare different datasets. More...

#include <LSDRasterInfo.hpp>

Public Member Functions
	LSDRasterInfo ()
	an empty create function
	LSDRasterInfo (string filename, string extension)
	This function reads the file.
	LSDRasterInfo (LSDRaster &Raster)
	This gets the information from an existing raster.
	LSDRasterInfo (LSDIndexRaster &IRaster)
	This gets the information from an existing index raster.
bool	operator== (LSDRasterInfo &LSDRI)
	The equality operator.
bool	operator!= (LSDRasterInfo &LSDRI)
	The inequality operator.
void	get_UTM_information (int &UTM_zone, bool &is_North)
	this function gets the UTM_zone and a boolean that is true if the map is in the northern hemisphere More...
bool	check_if_point_is_in_raster (float X_coordinate, float Y_coordinate)
	this check to see if a point is within the raster More...
int	get_NRows () const
int	get_NCols () const
float	get_XMinimum () const
float	get_YMinimum () const
float	get_DataResolution () const
int	get_NoDataValue () const
map< string, string >	get_GeoReferencingStrings () const

Protected Member Functions
void	read_header (string filename, string extension)
	Read a header The supported formats are .asc, .flt and .bil which are both exported and imported by arcmap. The filename is the string of characters before the '.' in the extension and the extension is the characters after the '.'. If the full filename is my_dem.01.asc then: filename = "my_dem.01" and extension = "asc". For float files both a data file and a header are read the header file must have the same filename, before extention, of the raster data, and the extension must be .hdr. More...

Protected Attributes
int	NRows
	Number of rows.
int	NCols
	Number of columns.
float	XMinimum
	Minimum X coordinate.
float	YMinimum
	Minimum Y coordinate.
float	DataResolution
	Data resolution.
int	NoDataValue
	No data value.
map< string, string >	GeoReferencingStrings
	A map of strings for holding georeferencing information.

Detailed Description

Object that stores georeferencing information. This information is also stored with the raster, it is seperated here mainly to compare different datasets.

Member Function Documentation

bool LSDRasterInfo::check_if_point_is_in_raster	(	float	X_coordinate,
		float	Y_coordinate
	)

this check to see if a point is within the raster

Parameters

X_coordinate	the x location of the point
Y_coordinate	the y location of the point

Returns

is_in_raster a boolean telling if the point is in the raster

Author

SMM

Date

13/11/2014

float LSDRasterInfo::get_DataResolution ( ) const

inline

Returns

Data resolution as an integer.

map<string,string> LSDRasterInfo::get_GeoReferencingStrings ( ) const

inline

Returns

map containing the georeferencing strings

int LSDRasterInfo::get_NCols ( ) const

inline

Returns

Number of columns as an integer.

int LSDRasterInfo::get_NoDataValue ( ) const

inline

Returns

No Data Value as an integer.

int LSDRasterInfo::get_NRows ( ) const

inline

Returns

Number of rows as an integer.

void LSDRasterInfo::get_UTM_information	(	int &	UTM_zone,
		bool &	is_North
	)

this function gets the UTM_zone and a boolean that is true if the map is in the northern hemisphere

Parameters

UTM_zone	the UTM zone. Replaced in function.
is_North	a boolean that is true if the DEM is in the northern hemisphere. replaced in function

Author

SMM

Date

22/12/2014

float LSDRasterInfo::get_XMinimum ( ) const

inline

Returns

Minimum X coordinate as an integer.

float LSDRasterInfo::get_YMinimum ( ) const

inline

Returns

Minimum Y coordinate as an integer.

void LSDRasterInfo::read_header ( string  filename, string  extension  )

protected

Read a header The supported formats are .asc, .flt and .bil which are both exported and imported by arcmap. The filename is the string of characters before the '.' in the extension and the extension is the characters after the '.'. If the full filename is my_dem.01.asc then: filename = "my_dem.01" and extension = "asc". For float files both a data file and a header are read the header file must have the same filename, before extention, of the raster data, and the extension must be .hdr.

Parameters

filename	the prefix of the file
extension	this is either "asc", "flt", or "bil"

Author

SMM

Date

01/01/12

---

The documentation for this class was generated from the following files:

• LSDRasterInfo.hpp
• LSDRasterInfo.cpp