vtkDEMReader Class Reference

#include <vtkDEMReader.h>

Inheritance diagram for vtkDEMReader:

[legend]Collaboration diagram for vtkDEMReader:

[legend]List of all members.

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Detailed Description

read a digital elevation model (DEM) file

vtkDEMReader reads digital elevation files and creates image data. Digital elevation files are produced by the US Geological Survey. A complete description of the DEM file is located at the USGS site. The reader reads the entire dem file and create a vtkImageData that contains a single scalar component that is the elevation in meters. The spacing is also expressed in meters. A number of get methods provide access to fields on the header.

Examples:

vtkDEMReader (Examples)

Tests:

vtkDEMReader (Tests)

Definition at line 39 of file vtkDEMReader.h.

Public Types
typedef vtkImageAlgorithm	Superclass
enum	{ REFERENCE_SEA_LEVEL = 0, REFERENCE_ELEVATION_BOUNDS }
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	SetFileName (const char *)
virtual char *	GetFileName ()
virtual void	SetElevationReference (int)
virtual int	GetElevationReference ()
void	SetElevationReferenceToSeaLevel ()
void	SetElevationReferenceToElevationBounds ()
const char *	GetElevationReferenceAsString (void)
virtual char *	GetMapLabel ()
virtual int	GetDEMLevel ()
virtual int	GetElevationPattern ()
virtual int	GetGroundSystem ()
virtual int	GetGroundZone ()
virtual float *	GetProjectionParameters ()
virtual void	GetProjectionParameters (float data[15])
virtual int	GetPlaneUnitOfMeasure ()
virtual int	GetElevationUnitOfMeasure ()
virtual int	GetPolygonSize ()
virtual float *	GetElevationBounds ()
virtual void	GetElevationBounds (float data[2])
virtual float	GetLocalRotation ()
virtual int	GetAccuracyCode ()
virtual float *	GetSpatialResolution ()
virtual void	GetSpatialResolution (float data[3])
virtual int *	GetProfileDimension ()
virtual void	GetProfileDimension (int data[2])
virtual int	RequestInformation (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
Static Public Member Functions
static vtkDEMReader *	New ()
static int	IsTypeOf (const char *type)
static vtkDEMReader *	SafeDownCast (vtkObject *o)
Protected Member Functions
	vtkDEMReader ()
	~vtkDEMReader ()
void	ComputeExtentOriginAndSpacing (int extent[6], double origin[6], double spacing[6])
int	ReadTypeARecord ()
int	ReadProfiles (vtkImageData *data)
virtual int	RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
Protected Attributes
vtkTimeStamp	ReadHeaderTime
int	NumberOfColumns
int	NumberOfRows
int	WholeExtent [6]
char *	FileName
char	MapLabel [145]
int	DEMLevel
int	ElevationPattern
int	GroundSystem
int	GroundZone
float	ProjectionParameters [15]
int	PlaneUnitOfMeasure
int	ElevationUnitOfMeasure
int	PolygonSize
float	GroundCoords [4][2]
float	ElevationBounds [2]
float	LocalRotation
int	AccuracyCode
float	SpatialResolution [3]
int	ProfileDimension [2]
int	ProfileSeekOffset
int	ElevationReference

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Member Typedef Documentation

typedef vtkImageAlgorithm vtkDEMReader::Superclass

Reimplemented from vtkImageAlgorithm. Definition at line 43 of file vtkDEMReader.h.

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Member Enumeration Documentation

anonymous enum

Enumerator: REFERENCE_SEA_LEVEL  REFERENCE_ELEVATION_BOUNDS  Definition at line 53 of file vtkDEMReader.h.

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Constructor & Destructor Documentation

vtkDEMReader::vtkDEMReader (   )  [protected]

vtkDEMReader::~vtkDEMReader (   )  [protected]

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Member Function Documentation

static vtkDEMReader* vtkDEMReader::New (   )  [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on. Reimplemented from vtkAlgorithm.

virtual const char* vtkDEMReader::GetClassName (   )  [virtual]

Reimplemented from vtkImageAlgorithm.

static int vtkDEMReader::IsTypeOf (  const char *  type  )  [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkImageAlgorithm.

virtual int vtkDEMReader::IsA (  const char *  type  )  [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkImageAlgorithm.

static vtkDEMReader* vtkDEMReader::SafeDownCast (  vtkObject *  o  )  [static]

Reimplemented from vtkImageAlgorithm.

void vtkDEMReader::PrintSelf (  ostream &  os, vtkIndent  indent )  [virtual]

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes. Reimplemented from vtkImageAlgorithm.

virtual void vtkDEMReader::SetFileName (  const char *   )  [virtual]

Specify file name of Digital Elevation Model (DEM) file

virtual char* vtkDEMReader::GetFileName (   )  [virtual]

virtual void vtkDEMReader::SetElevationReference (  int   )  [virtual]

Specify the elevation origin to use. By default, the elevation origin is equal to ElevationBounds[0]. A more convenient origin is to use sea level (i.e., a value of 0.0).

virtual int vtkDEMReader::GetElevationReference (   )  [virtual]

Specify the elevation origin to use. By default, the elevation origin is equal to ElevationBounds[0]. A more convenient origin is to use sea level (i.e., a value of 0.0).

void vtkDEMReader::SetElevationReferenceToSeaLevel (   )  [inline]

Specify the elevation origin to use. By default, the elevation origin is equal to ElevationBounds[0]. A more convenient origin is to use sea level (i.e., a value of 0.0). Definition at line 63 of file vtkDEMReader.h.

void vtkDEMReader::SetElevationReferenceToElevationBounds (   )  [inline]

Specify the elevation origin to use. By default, the elevation origin is equal to ElevationBounds[0]. A more convenient origin is to use sea level (i.e., a value of 0.0). Definition at line 65 of file vtkDEMReader.h.

const char* vtkDEMReader::GetElevationReferenceAsString (  void   )

Specify the elevation origin to use. By default, the elevation origin is equal to ElevationBounds[0]. A more convenient origin is to use sea level (i.e., a value of 0.0).

virtual char* vtkDEMReader::GetMapLabel (   )  [virtual]

An ASCII description of the map

virtual int vtkDEMReader::GetDEMLevel (   )  [virtual]

Code 1=DEM-1, 2=DEM_2, ...

virtual int vtkDEMReader::GetElevationPattern (   )  [virtual]

Code 1=regular, 2=random, reserved for future use

virtual int vtkDEMReader::GetGroundSystem (   )  [virtual]

Ground planimetric reference system

virtual int vtkDEMReader::GetGroundZone (   )  [virtual]

Zone in ground planimetric reference system

virtual float* vtkDEMReader::GetProjectionParameters (   )  [virtual]

Map Projection parameters. All are zero.

virtual void vtkDEMReader::GetProjectionParameters (  float  data[15]  )  [virtual]

Map Projection parameters. All are zero.

virtual int vtkDEMReader::GetPlaneUnitOfMeasure (   )  [virtual]

Defining unit of measure for ground planimetric coordinates throughout the file. 0 = radians, 1 = feet, 2 = meters, 3 = arc-seconds.

virtual int vtkDEMReader::GetElevationUnitOfMeasure (   )  [virtual]

Defining unit of measure for elevation coordinates throughout the file. 1 = feet, 2 = meters

virtual int vtkDEMReader::GetPolygonSize (   )  [virtual]

Number of sides in the polygon which defines the coverage of the DEM file. Set to 4.

virtual float* vtkDEMReader::GetElevationBounds (   )  [virtual]

Minimum and maximum elevation for the DEM. The units in the file are in ElevationUnitOfMeasure. This class converts them to meters.

virtual void vtkDEMReader::GetElevationBounds (  float  data[2]  )  [virtual]

Minimum and maximum elevation for the DEM. The units in the file are in ElevationUnitOfMeasure. This class converts them to meters.

virtual float vtkDEMReader::GetLocalRotation (   )  [virtual]

Counterclockwise angle (in radians) from the primary axis of the planimetric reference to the primary axis of the DEM local reference system. IGNORED BY THIS IMPLEMENTATION.

virtual int vtkDEMReader::GetAccuracyCode (   )  [virtual]

Accuracy code for elevations. 0=unknown accuracy

virtual float* vtkDEMReader::GetSpatialResolution (   )  [virtual]

DEM spatial resolution for x,y,z. Values are expressed in units of resolution. Since elevations are read as integers, this permits fractional elevations.

virtual void vtkDEMReader::GetSpatialResolution (  float  data[3]  )  [virtual]

DEM spatial resolution for x,y,z. Values are expressed in units of resolution. Since elevations are read as integers, this permits fractional elevations.

virtual int* vtkDEMReader::GetProfileDimension (   )  [virtual]

The number of rows and columns in the DEM.

virtual void vtkDEMReader::GetProfileDimension (  int  data[2]  )  [virtual]

The number of rows and columns in the DEM.

virtual int vtkDEMReader::RequestInformation (  vtkInformation *  , vtkInformationVector **  , vtkInformationVector *  )  [virtual]

Reads the DEM Type A record to compute the extent, origin and spacing of the image data. The number of scalar components is set to 1 and the output scalar type is VTK_FLOAT. Reimplemented from vtkImageAlgorithm.

void vtkDEMReader::ComputeExtentOriginAndSpacing (  int  extent[6], double  origin[6], double  spacing[6] )  [protected]

int vtkDEMReader::ReadTypeARecord (   )  [protected]

int vtkDEMReader::ReadProfiles (  vtkImageData *  data  )  [protected]

virtual int vtkDEMReader::RequestData (  vtkInformation *  request, vtkInformationVector **  inputVector, vtkInformationVector *  outputVector )  [protected, virtual]

This is called by the superclass. This is the method you should override. Reimplemented from vtkImageAlgorithm.

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Member Data Documentation

vtkTimeStamp vtkDEMReader::ReadHeaderTime [protected]

Definition at line 161 of file vtkDEMReader.h.

int vtkDEMReader::NumberOfColumns [protected]

Definition at line 162 of file vtkDEMReader.h.

int vtkDEMReader::NumberOfRows [protected]

Definition at line 163 of file vtkDEMReader.h.

int vtkDEMReader::WholeExtent[6] [protected]

Definition at line 164 of file vtkDEMReader.h.

char* vtkDEMReader::FileName [protected]

Definition at line 165 of file vtkDEMReader.h.

char vtkDEMReader::MapLabel[145] [protected]

Definition at line 166 of file vtkDEMReader.h.

int vtkDEMReader::DEMLevel [protected]

Definition at line 167 of file vtkDEMReader.h.

int vtkDEMReader::ElevationPattern [protected]

Definition at line 168 of file vtkDEMReader.h.

int vtkDEMReader::GroundSystem [protected]

Definition at line 169 of file vtkDEMReader.h.

int vtkDEMReader::GroundZone [protected]

Definition at line 170 of file vtkDEMReader.h.

float vtkDEMReader::ProjectionParameters[15] [protected]

Definition at line 171 of file vtkDEMReader.h.

int vtkDEMReader::PlaneUnitOfMeasure [protected]

Definition at line 172 of file vtkDEMReader.h.

int vtkDEMReader::ElevationUnitOfMeasure [protected]

Definition at line 173 of file vtkDEMReader.h.

int vtkDEMReader::PolygonSize [protected]

Definition at line 174 of file vtkDEMReader.h.

float vtkDEMReader::GroundCoords[4][2] [protected]

Definition at line 175 of file vtkDEMReader.h.

float vtkDEMReader::ElevationBounds[2] [protected]

Definition at line 176 of file vtkDEMReader.h.

float vtkDEMReader::LocalRotation [protected]

Definition at line 177 of file vtkDEMReader.h.

int vtkDEMReader::AccuracyCode [protected]

Definition at line 178 of file vtkDEMReader.h.

float vtkDEMReader::SpatialResolution[3] [protected]

Definition at line 179 of file vtkDEMReader.h.

int vtkDEMReader::ProfileDimension[2] [protected]

Definition at line 180 of file vtkDEMReader.h.

int vtkDEMReader::ProfileSeekOffset [protected]

Definition at line 181 of file vtkDEMReader.h.

int vtkDEMReader::ElevationReference [protected]

Definition at line 182 of file vtkDEMReader.h.

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

• dox/IO/vtkDEMReader.h

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