Package hec.map.aidem

Class AiDemFltMap

java.lang.Object

hec.map.MapObject

hec.map.aidem.AiDemBaseMap

hec.map.aidem.AiDemFltMap

All Implemented Interfaces:

ElevationMap, GridMap, MapObjectInterface, Serializable

public class AiDemFltMap
extends AiDemBaseMap
implements Serializable, MapObjectInterface, ElevationMap, GridMap

Map Object class for reading ESRI Binary Grid files. The Binary Grid file data are stored in two files, a .flt and a .hdr. The FLT file contains all of the binary grid data, and the HDR file contains the header information such as grid location and cell size.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXTENSION

Fields inherited from class hec.map.aidem.AiDemBaseMap

_cellsize, _data, _lowerLeftCorner, _maxElev, _minElev, _nodata, _numcol, _numrow

Fields inherited from class hec.map.MapObject

_debug, _extent, _fileOpener, _loaded, _mapId, mCoordinateReferencySystem

Constructor Summary

Constructors

Constructor	Description
AiDemFltMap()
AiDemFltMap(MapIdentifier id)
AiDemFltMap(String fileName)

Method Summary

Modifier and Type	Method	Description
boolean	fillArray(float[] dest, long destPosition, long srcPosition, int length)	Fills the destination array with data from this map starting at destPosition reading from srcPosition for length # of values.
List	getFilenames()	return the list of File names that the MapObject has.
void	load()	Loads the binary
void	loadBin(HecFile file)
void	loadHeader()
boolean	mapIdentifierEquals(MapIdentifier mapid)	check to see if the Map specified by the MapIdentifier mapid is the same map as this one.
void	setAreaHeight(int numRow)	set the number of rows in the map and redimensions the map.
void	setAreaSize(int rows, int cols)
void	setAreaWidth(int numCol)	set the number of columns in the map and redimensions the map.
void	setCellSize(double cellSize)	sets the width/height of each cell in the grid.
boolean	setElevation(double e, double n, float val)
boolean	setElevation(WorldPt pt, float val)	set an elevation value for a given point on the map.
void	setLowerLeftCorner(WorldPt wpt)
void	unload()	Method to tell the Map Object to unload, because the map is done
boolean	writeFile(Identifier fltId)
protected boolean	writeHeader(Identifier hdrId)

Methods inherited from class hec.map.aidem.AiDemBaseMap

cellToWorldPt, cellToWorldPt, getAreaHeight, getAreaWidth, getData, getElevation, getElevation, getGridCellSize, getLowerLeftCorner, getMaximumElevation, getMinimumElevation, getName, getNoDataValue, getResolutionX, getResolutionY, init, setNoDataValue, supportsNoDataValue, worldPtToCell, worldPtToCell

Methods inherited from class hec.map.MapObject

equals, getCoordinateInfo, getCoordinateReferenceSystem, getExtent, getFileOpener, getMapIdentifier, newFile, newThenOpenFile, openFile, readProjection, setExtent, setFileOpener, setMapIdentifier, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface hec.map.ElevationMap

getElevation, getElevation, getMaximumElevation, getMinimumElevation, getName

Methods inherited from interface hec.map.GridMap

getGridCellSize, getNoDataValue, supportsNoDataValue

Methods inherited from interface hec.map.MapObjectInterface

getCoordinateReferenceSystem, getExtent, getMapIdentifier, setExtent, setMapIdentifier

Field Details

EXTENSION

public static final String EXTENSION

See Also:

• Constant Field Values

Constructor Details

AiDemFltMap

public AiDemFltMap(String fileName)

AiDemFltMap

public AiDemFltMap(MapIdentifier id)

AiDemFltMap

public AiDemFltMap()

Method Details

getFilenames

public List getFilenames()

Description copied from class: MapObject

return the list of File names that the MapObject has. The first filename in the list must be the main file (ie for shape files it should be the .shp file, usually _mapId.getPath() ). Subclasses should override this method if they have more than 1 file.

Overrides:

getFilenames in class MapObject

Returns:

the list of Map File names

unload

public void unload()

Description copied from interface: MapObjectInterface

Method to tell the Map Object to unload, because the map is done

Specified by:

unload in interface MapObjectInterface

Overrides:

unload in class AiDemBaseMap

load

public void load()
          throws IOException

Loads the binary

Specified by:

load in interface MapObjectInterface

Overrides:

load in class AiDemBaseMap

Throws:

IOException - Description of Exception

loadHeader

public void loadHeader()
                throws IOException

Specified by:

loadHeader in class AiDemBaseMap

Throws:

IOException

fillArray

public boolean fillArray(float[] dest,
 long destPosition,
 long srcPosition,
 int length)
                  throws IOException

Fills the destination array with data from this map starting at destPosition reading from srcPosition for length # of values.

Specified by:

fillArray in class AiDemBaseMap

Throws:

IOException

loadBin

public void loadBin(HecFile file)
             throws IOException

Throws:

IOException

writeFile

public boolean writeFile(Identifier fltId)

writeHeader

protected boolean writeHeader(Identifier hdrId)

Parameters:

hdrId -

Returns:

setElevation

public boolean setElevation(WorldPt pt,
 float val)

set an elevation value for a given point on the map. If that point is outside the bounds of the map, nothing is set with the method getNoDataValue()

Parameters:

pt - WorldPt

Returns:

float

setElevation

public boolean setElevation(double e,
 double n,
 float val)

setAreaHeight

public void setAreaHeight(int numRow)

set the number of rows in the map and redimensions the map. existing data is lost

Parameters:

numRow - new number of rows

setAreaWidth

public void setAreaWidth(int numCol)

set the number of columns in the map and redimensions the map. existing data is lost

Parameters:

numCol - new number of columns

setAreaSize

public void setAreaSize(int rows,
 int cols)

setLowerLeftCorner

public void setLowerLeftCorner(WorldPt wpt)

setCellSize

public void setCellSize(double cellSize)

sets the width/height of each cell in the grid.

mapIdentifierEquals

public boolean mapIdentifierEquals(MapIdentifier mapid)

check to see if the Map specified by the MapIdentifier mapid is the same map as this one. AiDem files create a binary version of the ascii file so the test needs to check both the .asc and the .ascbin extensions.

Overrides:

mapIdentifierEquals in class MapObject

Parameters:

mapid -

Returns:

true if the mapid references the same map file as this map.