ilog.views.maps.format.shapefile

Class IlvShapeFileTiler

java.lang.Object

ilog.views.maps.format.shapefile.IlvShapeFileTiler

public class IlvShapeFileTiler
extends Object

An IlvShapeFileTiler is used to generate and to save tile information for a given Shapefile.
There are two ways to use this class :
A direct way, tile information is written in one call :

 IlvShapeFileTiler.CreateShapeSpatialIndex(sourceFileName,
                                           targetFileName,
                                           tileWidth,
                                           tileHeight);
 

or a step by step way, allowing to update a progress bar,

 IlvShapeFileTiler tiler = new IlvShapeFileTiler(sourceFileName,
                                                 shxFileName,
                                                 targetFileName,
                                                 tileWidth,
                                                 tileHeight);
 while(tiler.getNextFeature() != null) {
           updateProgressBar();
           tiler.addInfo();
 }
 tiler.close();
 

Since:

JViews 5.0

Constructor Summary

Constructors

Constructor and Description
IlvShapeFileTiler(String shpFilename, String shxFileName, String targetFileName, double tileWidth, double tileHeight) Constructs a new IlvShapeFileTiler providing a shapefile name, a shx file name, a target index file name, and a tile size.
IlvShapeFileTiler(String shpFilename, String shxFileName, String targetFileName, int numColumns, int numRows) Constructs a new IlvShapeFileTiler providing a shapefile name, an shx file name, a target index file name, the number of columns, and the number of rows.

Method Summary

Modifier and Type	Method and Description
void	addInfo() Adds a single object in the spatial index.
void	close() Saves the tiling information, and closes the readers.
static void	CreateShapeSpatialIndex(String shpFilename, String targetFileName, double tileWidth, double tileHeight) Creates a shape spatial index in one call.
static void	CreateShapeSpatialIndex(String shpFilename, String targetFileName, int numColumns, int numRows) Creates a shape spatial index in one call.
double	getColumnCount() Returns the number of columns.
int	getCurrentCount() Returns the number of objects currently processed.
int	getFeatureCount() Returns the total number of objects to process, or 0 if the index file could not be opened.
IlvCoordinate	getLowerRightCorner() Returns the lower right coordinate of the bounding box that delimits the objects contained in the shape file.
IlvMapFeature	getNextFeature() Returns the next feature from the shape file.
IlvCoordinate	getOrigin() Returns the origin of the tile grid.
double	getRowCount() Returns the number of rows.
double	getTileHeight() Returns the height of a tile in manager coordinates.
double	getTileWidth() Returns the width of a tile in manager coordinates.
IlvCoordinate	getUpperLeftCorner() Returns the upper left coordinate of the bounding box that delimits the objects contained in the shape file.

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvShapeFileTiler

public IlvShapeFileTiler(String shpFilename,
                         String shxFileName,
                         String targetFileName,
                         double tileWidth,
                         double tileHeight)
                  throws IOException

Constructs a new IlvShapeFileTiler providing a shapefile name, a shx file name, a target index file name, and a tile size.

Parameters:

shpFilename - The source shape file name.

shxFileName - The name of the shx file, or null if no progress information is needed.

targetFileName - The target spatial index file name.

tileWidth - The width of one tile, in manager coordinates.

tileHeight - The height of one tile, in manager coordinates.

Throws:

IOException

IlvShapeFileTiler

public IlvShapeFileTiler(String shpFilename,
                         String shxFileName,
                         String targetFileName,
                         int numColumns,
                         int numRows)
                  throws IOException

Constructs a new IlvShapeFileTiler providing a shapefile name, an shx file name, a target index file name, the number of columns, and the number of rows.

Parameters:

shpFilename - The source shape file name.

shxFileName - The name of the shx file, or null if no progress information is needed.

targetFileName - The target spatial index file name.

numColumns - The number of columns.

numRows - The number of rows.

Throws:

IOException

Method Detail

getUpperLeftCorner

public IlvCoordinate getUpperLeftCorner()

Returns the upper left coordinate of the bounding box that delimits the objects contained in the shape file.

getLowerRightCorner

public IlvCoordinate getLowerRightCorner()

Returns the lower right coordinate of the bounding box that delimits the objects contained in the shape file.

CreateShapeSpatialIndex

public static void CreateShapeSpatialIndex(String shpFilename,
                                           String targetFileName,
                                           int numColumns,
                                           int numRows)
                                    throws Exception

Creates a shape spatial index in one call.

Parameters:

shpFilename - The source shape file name.

targetFileName - The target spatial index file name.

numColumns - The number of columns.

numRows - The number of rows.

Throws:

Exception

CreateShapeSpatialIndex

public static void CreateShapeSpatialIndex(String shpFilename,
                                           String targetFileName,
                                           double tileWidth,
                                           double tileHeight)
                                    throws Exception

Creates a shape spatial index in one call.

Parameters:

shpFilename - The source shape file name.

targetFileName - The target spatial index file name.

tileWidth - The tile width.

tileHeight - The tile height.

Throws:

Exception

addInfo

public void addInfo()
             throws IOException

Adds a single object in the spatial index.

Throws:

IOException

getNextFeature

public IlvMapFeature getNextFeature()
                             throws IOException

Returns the next feature from the shape file.

Throws:

IOException

close

public void close()
           throws IOException

Saves the tiling information, and closes the readers.

Throws:

IOException

getOrigin

public IlvCoordinate getOrigin()

Returns the origin of the tile grid.

getTileWidth

public double getTileWidth()

Returns the width of a tile in manager coordinates.

getTileHeight

public double getTileHeight()

Returns the height of a tile in manager coordinates.

getColumnCount

public double getColumnCount()

Returns the number of columns.

getRowCount

public double getRowCount()

Returns the number of rows.

getCurrentCount

public int getCurrentCount()

Returns the number of objects currently processed.

getFeatureCount

public int getFeatureCount()

Returns the total number of objects to process, or 0 if the index file could not be opened.