#include <GdalRaster.hh>

Inheritance diagram for GdalRaster:

Collaboration diagram for GdalRaster:

Public Member Functions
	GdalRaster ()
void	createRaster (const std::string &file, int categ=0)
void	createRaster (const std::string &file, const MapFormat &format)
	~GdalRaster ()
int	iget (int x, int y, Scalar *val)
int	iput (int x, int y, Scalar val)
int	get (Coord x, Coord y, Scalar *val)
int	put (Coord x, Coord y, Scalar val)
int	put (Coord x, Coord y)
int	getMinMax (Scalar min, Scalar max)
int	calcMinMax (int band=0)
void	finish ()
int	deleteRaster ()
bool	hasCustomGeotransform ()
int	getExtentInStandardCs (Coord xmin, Coord ymin, Coord xmax, Coord ymax)
Private Member Functions
void	open (char mode)
void	create (int format)
void	initBuffer ()
void	read (Scalar *buf, int first_row, int num_rows)
void	write (Scalar *buf, int first_row, int num_rows)
void	loadRow (int row, bool writeOperation=false)
void	saveRow ()
	GdalRaster (const GdalRaster &)
GdalRaster &	operator= (const GdalRaster &)
Static Private Member Functions
static void	initGdal ()
Private Attributes
GDALDataset *	f_ds
Scalar *	f_data
int	f_size
int	f_format
int	f_currentRow
int	f_changed
GDALDataset *	f_warped_ds

Detailed Description

Manages raster files with GDAL (Geospatial Data Abstraction Library - http://www.remotesensing.org/gdal/index.html)

Definition at line 51 of file GdalRaster.hh.

Constructor & Destructor Documentation

GdalRaster::GdalRaster ( ) [inline]

Definition at line 56 of file GdalRaster.hh.

GdalRaster::~GdalRaster ( )

Destructor

Definition at line 281 of file GdalRaster.cpp.

References f_data, f_ds, Raster::f_file, and saveRow().

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GdalRaster::GdalRaster ( const GdalRaster & ) [private]

Member Function Documentation

int GdalRaster::calcMinMax ( int band = 0 )

Find the minimum and maximum values in 'band'.

Definition at line 765 of file GdalRaster.cpp.

References Raster::f_hdr, iget(), min(), Header::minmax, Header::nband, Header::vmax, Header::vmin, Header::xdim, and Header::ydim.

Referenced by getMinMax().

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void GdalRaster::create ( int format ) [private]

Create a new raster file based on 'hdr'.

Definition at line 442 of file GdalRaster.cpp.

References MapFormat::ByteASC, MapFormat::ByteHFA, GDAL_Format::dataType, Log::error(), f_ds, Raster::f_file, f_format, Raster::f_hdr, MapFormat::FloatingASC, MapFormat::FloatingHFA, GDAL_Format::GDalDriverName, MapFormat::GreyTiff100, Header::gt, initBuffer(), Log::instance(), Header::nband, Header::noval, Header::proj, Log::warn(), Header::xdim, and Header::ydim.

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void GdalRaster::createRaster	(	const std::string &	file,
		int	categ = `0`
	)		`[virtual]`

Open an existing file -- read only. If 'categ' != 0 this is a categorical map (ie it can't be interpolated). Othewise this is a continuos map.

Implements Raster.

Reimplemented in RemoteRaster, and WcsProxyRaster.

void GdalRaster::createRaster	(	const std::string &	file,
		const MapFormat &	format
	)		`[virtual]`

Create a new file for projections.

Parameters:

file	is the name of the output file
format	is the output format specification.

Implements Raster.

Reimplemented in RemoteRaster, and WcsProxyRaster.

int GdalRaster::deleteRaster ( ) [virtual]

Method to delete a raster.

Returns:: 1 if the raster was successfully deleted, 0 otherwise.

Implements Raster.

Reimplemented in RemoteRaster, and WcsProxyRaster.

Definition at line 931 of file GdalRaster.cpp.

References f_ds, and Raster::f_file.

void GdalRaster::finish ( ) [virtual]

Event that must be called to indicate when the projection is finished.

Reimplemented from Raster.

Reimplemented in RemoteRaster, and WcsProxyRaster.

Definition at line 873 of file GdalRaster.cpp.

References MapFormat::ByteASC, Log::error(), f_ds, Raster::f_file, f_format, MapFormat::FloatingASC, Log::instance(), saveRow(), and Log::warn().

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int GdalRaster::get	(	Coord	x,
		Coord	y,
		Scalar *	val
	)		`[virtual]`

Fills '*val' with the map value at (x,y). Returns zero if (x,y) is out of range.

Implements Raster.

Definition at line 683 of file GdalRaster.cpp.

References Header::convertLonLat2XY(), Raster::f_hdr, iget(), Header::nband, Header::noval, Header::xdim, and Header::ydim.

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int GdalRaster::getExtentInStandardCs	(	Coord *	xmin,
		Coord *	ymin,
		Coord *	xmax,
		Coord *	ymax
	)		`[virtual]`

Calculates the raster extent in openModeller's standard coordinate system. IMPORTANT: Call this only if hasCustomGeotransform returns true. When interacting with Map objects, use Map.getExtent instead, which encapsulates a call to this method when necessary. For some projections, such as lambert azimuth equal area, getting the raster extent through manual coordinate conversion, as was usually done in the Map.getExtent, can be problematic. This method provides a way for raster implementations to better perform the task of calculating the extent.

Parameters: