GDALColorReliefDataset Class Reference

Inheritance diagram for GDALColorReliefDataset:

Public Member Functions
	GDALColorReliefDataset (GDALDatasetH hSrcDS, GDALRasterBandH hSrcBand, const char *pszColorFilename, ColorSelectionMode eColorSelectionMode, int bAlpha)
CPLErr	GetGeoTransform (double *padfGeoTransform)
	Fetch the affine transformation coefficients.
const char *	GetProjectionRef ()
	Fetch the projection definition string for this dataset.
Public Member Functions inherited from GDALDataset
virtual	~GDALDataset ()
	Destroy an open GDALDataset.
int	GetRasterXSize (void)
	Fetch raster width in pixels.
int	GetRasterYSize (void)
	Fetch raster height in pixels.
int	GetRasterCount (void)
	Fetch the number of raster bands on this dataset.
GDALRasterBand *	GetRasterBand (int)
	Fetch a band object for a dataset.
virtual void	FlushCache (void)
	Flush all write cached data to disk.
virtual CPLErr	SetProjection (const char *)
	Set the projection reference string for this dataset.
virtual CPLErr	SetGeoTransform (double *)
	Set the affine transformation coefficients.
virtual CPLErr	AddBand (GDALDataType eType, char **papszOptions=NULL)
	Add a band to a dataset.
virtual void *	GetInternalHandle (const char *)
	Fetch a format specific internally meaningful handle.
virtual GDALDriver *	GetDriver (void)
	Fetch the driver to which this dataset relates.
virtual char **	GetFileList (void)
	Fetch files forming dataset.
virtual int	GetGCPCount ()
	Get number of GCPs.
virtual const char *	GetGCPProjection ()
	Get output projection for GCPs.
virtual const GDAL_GCP *	GetGCPs ()
	Fetch GCPs.
virtual CPLErr	SetGCPs (int nGCPCount, const GDAL_GCP *pasGCPList, const char *pszGCPProjection)
	Assign GCPs.
virtual CPLErr	AdviseRead (int nXOff, int nYOff, int nXSize, int nYSize, int nBufXSize, int nBufYSize, GDALDataType eDT, int nBandCount, int *panBandList, char **papszOptions)
	Advise driver of upcoming read requests.
virtual CPLErr	CreateMaskBand (int nFlags)
	Adds a mask band to the dataset.
virtual GDALAsyncReader *	BeginAsyncReader (int nXOff, int nYOff, int nXSize, int nYSize, void *pBuf, int nBufXSize, int nBufYSize, GDALDataType eBufType, int nBandCount, int *panBandMap, int nPixelSpace, int nLineSpace, int nBandSpace, char **papszOptions)
	Sets up an asynchronous data request.
virtual void	EndAsyncReader (GDALAsyncReader *)
	End asynchronous request.
CPLErr	RasterIO (GDALRWFlag, int, int, int, int, void *, int, int, GDALDataType, int, int *, int, int, int)
	Read/write a region of image data from multiple bands.
int	Reference ()
	Add one to dataset reference count.
int	Dereference ()
	Subtract one from dataset reference count.
GDALAccess	GetAccess ()
int	GetShared ()
	Returns shared flag.
void	MarkAsShared ()
	Mark this dataset as available for sharing.
CPLErr	BuildOverviews (const char *, int, int *, int, int *, GDALProgressFunc, void *)
	Build raster overview(s)
void	ReportError (CPLErr eErrClass, int err_no, const char *fmt,...) CPL_PRINT_FUNC_FORMAT(4
	Emits an error related to a dataset.
Public Member Functions inherited from GDALMajorObject
int	GetMOFlags ()
void	SetMOFlags (int nFlags)
virtual const char *	GetDescription () const
	Fetch object description.
virtual void	SetDescription (const char *)
	Set object description.
virtual char **	GetMetadata (const char *pszDomain="")
	Fetch metadata.
virtual CPLErr	SetMetadata (char **papszMetadata, const char *pszDomain="")
	Set metadata.
virtual const char *	GetMetadataItem (const char *pszName, const char *pszDomain="")
	Fetch single metadata item.
virtual CPLErr	SetMetadataItem (const char *pszName, const char *pszValue, const char *pszDomain="")
	Set single metadata item.

Friends
class	GDALColorReliefRasterBand

Additional Inherited Members
Static Public Member Functions inherited from GDALDataset
static GDALDataset **	GetOpenDatasets (int *pnDatasetCount)
	Fetch all open GDAL dataset handles.
Protected Member Functions inherited from GDALDataset
void	RasterInitialize (int, int)
void	SetBand (int, GDALRasterBand *)
virtual CPLErr	IBuildOverviews (const char *, int, int *, int, int *, GDALProgressFunc, void *)
virtual CPLErr	IRasterIO (GDALRWFlag, int, int, int, int, void *, int, int, GDALDataType, int, int *, int, int, int)
CPLErr	BlockBasedRasterIO (GDALRWFlag, int, int, int, int, void *, int, int, GDALDataType, int, int *, int, int, int)
void	BlockBasedFlushCache ()
virtual int	CloseDependentDatasets ()
	Drop references to any other datasets referenced by this dataset.
Protected Attributes inherited from GDALDataset
GDALDriver *	poDriver
GDALAccess	eAccess
int	nRasterXSize
int	nRasterYSize
int	nBands
GDALRasterBand **	papoBands
int	bForceCachedIO
int	nRefCount
int	bShared
GDALDefaultOverviews	oOvManager

Member Function Documentation

CPLErr GDALColorReliefDataset::GetGeoTransform ( double *  padfTransform )

virtual

Fetch the affine transformation coefficients.

Fetches the coefficients for transforming between pixel/line (P,L) raster space, and projection coordinates (Xp,Yp) space.

Xp = padfTransform[0] + P*padfTransform[1] + L*padfTransform[2];
Yp = padfTransform[3] + P*padfTransform[4] + L*padfTransform[5];

In a north up image, padfTransform[1] is the pixel width, and padfTransform[5] is the pixel height. The upper left corner of the upper left pixel is at position (padfTransform[0],padfTransform[3]).

The default transform is (0,1,0,0,0,1) and should be returned even when a CE_Failure error is returned, such as for formats that don't support transformation to projection coordinates.

NOTE: GetGeoTransform() isn't expressive enough to handle the variety of OGC Grid Coverages pixel/line to projection transformation schemes. Eventually this method will be depreciated in favour of a more general scheme.

This method does the same thing as the C GDALGetGeoTransform() function.

Parameters

padfTransform

an existing six double buffer into which the transformation will be placed.

Returns

CE_None on success, or CE_Failure if no transform can be fetched.

Reimplemented from GDALDataset.

References GDALGetGeoTransform().

const char * GDALColorReliefDataset::GetProjectionRef ( void  )

virtual

Fetch the projection definition string for this dataset.

Same as the C function GDALGetProjectionRef().

The returned string defines the projection coordinate system of the image in OpenGIS WKT format. It should be suitable for use with the OGRSpatialReference class.

When a projection definition is not available an empty (but not NULL) string is returned.

Returns

a pointer to an internal projection reference string. It should not be altered, freed or expected to last for long.

See Also

http://www.gdal.org/ogr/osr_tutorial.html

Reimplemented from GDALDataset.

References GDALGetProjectionRef().

---

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

• gdaldem.cpp