OmgGdal Class Reference
[Library]

#include <omggdal.h>

Inheritance diagram for OmgGdal:

[legend]Collaboration diagram for OmgGdal:

[legend]List of all members.

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Detailed Description

This class will write a png image given an input gdal compatible datasource, and provide other GDAL related functions in Qt friendly way.

Definition at line 52 of file omggdal.h.

Public Types
enum	FileType { GeoTiff, ArcInfoAscii }
Signals
void	error (QString theError)
void	updateProgress (int theProgress, int theMaximum)
Public Member Functions
	OmgGdal ()
	~OmgGdal ()
const QString	getWorldFile (const QString theFileName)
const QString	getAsciiHeader (const QString theFileName)
const bool	convert (const QString theInputFile, const QString theOutputFileName, const FileType theOutputFileType)
void	buildSupportedRasterFileFilter (QString &theFileFiltersString)
const QString	contour (const QString theInputFile)
void	showProgress (int theProgress, int theMaximum)
void	writeImage (QString theInputFileString, QString theOutputFileString, int theWidth, int theHeight)
const bool	makeLegend (const QString theOutputFileName, const int theWidth)
const bool	gdal2gdal (const QString theFileName, const QString theOutputFileName, const QString theFormat)
const bool	gdal2Tiff (const QString theFileName, const QString theOutputFileName)
const bool	gdal2Ascii (const QString theFileName, const QString theOutputFileName)
Static Public Member Functions
static bool	isValidGdalFile (const QString theFilename)
static bool	isValidGdalProj (const QString theFilename)
Private Member Functions
void	calculateStats (BandStats *theBandStats, GDALDataset *gdalDataset)

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Member Enumeration Documentation

enum OmgGdal::FileType

Enumeration values: GeoTiff  ArcInfoAscii  Definition at line 58 of file omggdal.h.

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Constructor & Destructor Documentation

OmgGdal::OmgGdal (   )

Definition at line 110 of file omggdal.cpp.

OmgGdal::~OmgGdal (   )

Definition at line 117 of file omggdal.cpp.

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Member Function Documentation

void OmgGdal::buildSupportedRasterFileFilter (  QString &  theFileFiltersString  )

Get a list of supported GDAL datatype file filters. THis method was copied over from QGIS QgsRasterLayer Parameters: A  reference to a string. This will be populated with the results. Returns: void Definition at line 211 of file omggdal.cpp. Referenced by OmgGdalConverter::OmgGdalConverter(), and OmgGdalWarp::OmgGdalWarp().

void OmgGdal::calculateStats (  BandStats *  theBandStats, GDALDataset *  gdalDataset )  [private]

Calculate image statistics Definition at line 664 of file omggdal.cpp. References error().

const QString OmgGdal::contour (  const QString  theInputFile  )

Create contour lines from probability surface Only the first raster band will be contoured.Contours are fixed at 10 unit increments. This method is based on the GDAL apps/gdal_contour.cpp sources Parameters: const  QString theInputFile Gdal dataset to be contoured const  QString the name of the generated shapefile Definition at line 386 of file omggdal.cpp. References error(). Referenced by OmgGdalRasterContour::on_pbnProcess_clicked().

const bool OmgGdal::convert (  const QString  theInputFile, const QString  theOutputFileName, const FileType  theOutputFileType )

A Qt style wrapper for gdal to convert from one file format to another. See also: FileType enum for the currently supported output file types Parameters: const  QString theInputFile the name of the input file const  QString theOutputFileName the name of the output file const  FileType theFileType the type of the output file Returns: const bool true on success Definition at line 490 of file omggdal.cpp. References ArcInfoAscii, error(), gdal2Ascii(), gdal2Tiff(), and GeoTiff. Referenced by OmgGdalConverter::on_pbnProcess_clicked().

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void OmgGdal::error (  QString  theError  )  [signal]

Referenced by calculateStats(), contour(), convert(), and gdal2gdal().

const bool OmgGdal::gdal2Ascii (  const QString  theFileName, const QString  theOutputFileName )

Definition at line 583 of file omggdal.cpp. References gdal2gdal(). Referenced by convert().

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const bool OmgGdal::gdal2gdal (  const QString  theFileName, const QString  theOutputFileName, const QString  theFormat )

Convert a gdal raster to another gdal raster format. Parameters: theFileName  - raster to be converted theOutputFileName  - name of new raster to be created theFormat  - GDAL format as per http://www.gdal.org/formats_list.html Definition at line 527 of file omggdal.cpp. References error(), and progressCallback(). Referenced by gdal2Ascii(), and gdal2Tiff().

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const bool OmgGdal::gdal2Tiff (  const QString  theFileName, const QString  theOutputFileName )

Definition at line 576 of file omggdal.cpp. References gdal2gdal(). Referenced by convert().

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const QString OmgGdal::getAsciiHeader (  const QString  theFileName  )

Definition at line 150 of file omggdal.cpp. Referenced by OmgRasterThreshold::accept().

const QString OmgGdal::getWorldFile (  const QString  theFileName  )

Definition at line 121 of file omggdal.cpp.

bool OmgGdal::isValidGdalFile (  const QString  theFilename  )  [static]

A simple test to see if a file is a valid gdal raster. Parameters: QString  the name of the file to test Returns: bool True if file is valid Definition at line 602 of file omggdal.cpp. Referenced by Omgui::traverseDirectories().

bool OmgGdal::isValidGdalProj (  const QString  theFilename  )  [static]

A simple test to see if a gdal raster has a valid projection Parameters: QString  the name of the file to test Returns: bool True if file is valid Definition at line 641 of file omggdal.cpp. Referenced by Omgui::traverseDirectories().

const bool OmgGdal::makeLegend (  const QString  theOutputFileName, const int  theWidth )

This method will return a pixmap legend representation for the pseudocolor ramp used. Returns: true on success, false on failure Definition at line 806 of file omggdal.cpp. Referenced by OmgModel::postProcess().

void OmgGdal::showProgress (  int  theProgress, int  theMaximum )

Call the emitter a progress signal. We need this level of indirection to support gdal style call backs. See also: updateProgress Definition at line 595 of file omggdal.cpp. References updateProgress(). Referenced by progressCallback().

void OmgGdal::updateProgress (  int  theProgress, int  theMaximum )  [signal]

Emit a progress signal. should only ever be called using the showProgress method so we can properly support gdal style callbacks See also: showProgress Referenced by showProgress().

void OmgGdal::writeImage (  QString  theInputFileString, QString  theOutputFileString, int  theWidth, int  theHeight )

Write a pseudocolour PNG out with user specified size. Parameters: theInputFileString  A valid gdal raster layer theOutFileString  The name of the desired output image which will contain a pseudocolor image of the input layer. theHeight  - height in pixels for the output image theWidth  - width in pixels for the output image Definition at line 765 of file omggdal.cpp. Referenced by OmgRasterThreshold::accept(), main(), and OmgModel::postProcess().

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

• lib/omggdal.h
• lib/omggdal.cpp

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