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vtkDEMReader Class Reference

read a digital elevation model (DEM) file. More...

#include <vtkDEMReader.h>

Inheritance diagram for vtkDEMReader:

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List of all members.

Public Methods

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 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])
void ExecuteInformation ()

Static Public Methods

vtkDEMReader * New ()
int IsTypeOf (const char *type)
vtkDEMReader * SafeDownCast (vtkObject *o)

Protected Methods

 vtkDEMReader ()
 ~vtkDEMReader ()
 vtkDEMReader (const vtkDEMReader &)
void operator= (const vtkDEMReader &)
void ComputeExtentOriginAndSpacing (int extent[6], float origin[6], float spacing[6])
int ReadTypeARecord ()
int ReadProfiles (vtkImageData *data)
void Execute (vtkImageData *outData)
void Execute ()
void EnlargeOutputUpdateExtents (vtkDataObject *data)

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

Detailed Description

read a digital elevation model (DEM) file.

Date:
2000/12/10 20:08:23
Revision:
1.18

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)

Definition at line 64 of file vtkDEMReader.h.

Constructor & Destructor Documentation

vtkDEMReader::vtkDEMReader (    )  [protected]
 

vtkDEMReader::~vtkDEMReader (    )  [protected]
 

vtkDEMReader::vtkDEMReader (  const vtkDEMReader &    )  [inline, protected]
 

Definition at line 134 of file vtkDEMReader.h.

Member Function Documentation

vtkDEMReader* vtkDEMReader::New (    )  [static]
 

Instantiate object with no start, end, or progress methods.

Reimplemented from vtkImageSource.

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

Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageSource.

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 vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageSource.

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 vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageSource.

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

Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageSource.

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 vtkSource.

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

Specify file name of Digital Elevation Model (DEM) file

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

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]
 

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]
 

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]
 

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

The number of rows and columns in the DEM.

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

void vtkDEMReader::ExecuteInformation (    )  [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 vtkSource.

void vtkDEMReader::operator= (  const vtkDEMReader &    )  [inline, protected]
 

Definition at line 135 of file vtkDEMReader.h.

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

int vtkDEMReader::ReadTypeARecord (    )  [protected]
 

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

void vtkDEMReader::Execute (  vtkImageData *    outData )  [protected, virtual]
 

Reimplemented from vtkImageSource.

void vtkDEMReader::Execute (    )  [inline, protected, virtual]
 

Reimplemented from vtkImageSource.

Definition at line 162 of file vtkDEMReader.h.

void vtkDEMReader::EnlargeOutputUpdateExtents (  vtkDataObject *    data )  [protected]
 

This method is call by the superclass before an update. It sets the UpdateExtent to the WholeExtent.

Member Data Documentation

vtkTimeStamp vtkDEMReader::ReadHeaderTime [protected]
 

Definition at line 137 of file vtkDEMReader.h.

int vtkDEMReader::NumberOfColumns [protected]
 

Definition at line 138 of file vtkDEMReader.h.

int vtkDEMReader::NumberOfRows [protected]
 

Definition at line 139 of file vtkDEMReader.h.

int vtkDEMReader::WholeExtent[6] [protected]
 

Definition at line 140 of file vtkDEMReader.h.

char* vtkDEMReader::FileName [protected]
 

Definition at line 141 of file vtkDEMReader.h.

char vtkDEMReader::MapLabel[145] [protected]
 

Definition at line 142 of file vtkDEMReader.h.

int vtkDEMReader::DEMLevel [protected]
 

Definition at line 143 of file vtkDEMReader.h.

int vtkDEMReader::ElevationPattern [protected]
 

Definition at line 144 of file vtkDEMReader.h.

int vtkDEMReader::GroundSystem [protected]
 

Definition at line 145 of file vtkDEMReader.h.

int vtkDEMReader::GroundZone [protected]
 

Definition at line 146 of file vtkDEMReader.h.

float vtkDEMReader::ProjectionParameters[15] [protected]
 

Definition at line 147 of file vtkDEMReader.h.

int vtkDEMReader::PlaneUnitOfMeasure [protected]
 

Definition at line 148 of file vtkDEMReader.h.

int vtkDEMReader::ElevationUnitOfMeasure [protected]
 

Definition at line 149 of file vtkDEMReader.h.

int vtkDEMReader::PolygonSize [protected]
 

Definition at line 150 of file vtkDEMReader.h.

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

Definition at line 151 of file vtkDEMReader.h.

float vtkDEMReader::ElevationBounds[2] [protected]
 

Definition at line 152 of file vtkDEMReader.h.

float vtkDEMReader::LocalRotation [protected]
 

Definition at line 153 of file vtkDEMReader.h.

int vtkDEMReader::AccuracyCode [protected]
 

Definition at line 154 of file vtkDEMReader.h.

float vtkDEMReader::SpatialResolution[3] [protected]
 

Definition at line 155 of file vtkDEMReader.h.

int vtkDEMReader::ProfileDimension[2] [protected]
 

Definition at line 156 of file vtkDEMReader.h.

int vtkDEMReader::ProfileSeekOffset [protected]
 

Definition at line 157 of file vtkDEMReader.h.

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