ucar.visad
Class ShapefileAdapter

java.lang.Object
  ucar.visad.ShapefileAdapter

public class ShapefileAdapter
extends Object

Provides support for ShapeFiles in VisAD.

Author:

Don Murray?

Field Summary

static String	ATTR_POINTS map xml attribute
protected UnionSet	mapLines resulting maplines
protected EsriShapefile	shapefile shapefile
static String	TAG_POLYGON map xml tag

Constructor Summary

ShapefileAdapter(EsriShapefile shapefile)
From an ESRI shapefile extract all features into an in-memory structure.

ShapefileAdapter(InputStream iStream)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(InputStream iStream, Rectangle2D bBox)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(InputStream iStream, Rectangle2D bBox, double coarseness)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(InputStream iStream, String filename)
constructor

ShapefileAdapter(String filename)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(String filename, double coarseness)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(String filename, Rectangle2D bBox)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(String filename, Rectangle2D bBox, double coarseness)
Read an ESRI shapefile and extract all features into an in-memory structure.

ShapefileAdapter(URL url)
Read an ESRI shapefile from a URL and extract all features into an in-memory structure.

ShapefileAdapter(URL url, double coarseness)
Read an ESRI shapefile from a URL and extract all features into an in-memory structure.

ShapefileAdapter(URL url, Rectangle2D bBox)
Read an ESRI shapefile and extract the subset of features that have bounding boxes that intersect a specified bounding box

ShapefileAdapter(URL url, Rectangle2D bBox, double coarseness)
Read an ESRI shapefile and extract the subset of features that have bounding boxes that intersect a specified bounding box

Method Summary

UnionSet	getData() getData creates a VisAD UnionSet type with the MathType specified thru one of the other methods.
DbaseFile	getDbFile() Get the db file.
int	getFeatureType() What is the feature type
static UnionSet	makeSet(List sets) Utility to make a set

Methods inherited from class java.lang.Object

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

Field Detail

TAG_POLYGON

public static final String TAG_POLYGON

map xml tag

See Also:

Constant Field Values

ATTR_POINTS

public static final String ATTR_POINTS

map xml attribute

See Also:

Constant Field Values

shapefile

protected EsriShapefile shapefile

shapefile

mapLines

protected UnionSet mapLines

resulting maplines

Constructor Detail

ShapefileAdapter

public ShapefileAdapter(String filename)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

filename - name of ESRI shapefile (typically has ".shp" extension)

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(URL url)
                 throws IOException,
                        VisADException

Read an ESRI shapefile from a URL and extract all features into an in-memory structure.

Parameters:

url - URL of ESRI shapefile

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(URL url,
                        Rectangle2D bBox)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract the subset of features that have bounding boxes that intersect a specified bounding box

Parameters:

url - URL of ESRI shapefile

bBox - bounding box specifying which features to select, namely those whose bounding boxes intersect this one. If null, bounding box of whole shapefile is used

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(String filename,
                        Rectangle2D bBox)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

filename - name of ESRI shapefile

bBox - bounding box specifying which features to select, namely those whose bounding boxes intersect this one. If null, bounding box of whole shapefile is used

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(String filename,
                        double coarseness)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

filename - name of ESRI shapefile (typically has ".shp" extension)

coarseness - resolution vs. speed parameter. 0.0 for best resolution, 0.1 for good resolution with 10:1 zooms, etc.

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(URL url,
                        double coarseness)
                 throws IOException,
                        VisADException

Read an ESRI shapefile from a URL and extract all features into an in-memory structure.

Parameters:

url - URL of ESRI shapefile

coarseness - resolution vs. speed parameter. 0.0 for best resolution, 0.1 for good resolution with 10:1 zooms, etc.

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(URL url,
                        Rectangle2D bBox,
                        double coarseness)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract the subset of features that have bounding boxes that intersect a specified bounding box

Parameters:

url - URL of ESRI shapefile

bBox - bounding box specifying which features to select, namely those whose bounding boxes intersect this one. If null, bounding box of whole shapefile is used

coarseness - resolution vs. speed parameter. 0.0 for best resolution, 0.1 for good resolution with 10:1 zooms, etc.

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(String filename,
                        Rectangle2D bBox,
                        double coarseness)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

filename - name of ESRI shapefile

bBox - bounding box specifying which features to select, namely those whose bounding boxes intersect this one. If null, bounding box of whole shapefile is used

coarseness - resolution vs. speed parameter. 0.0 for best resolution, 0.1 for good resolution with 10:1 zooms, etc.

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(InputStream iStream)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

iStream - input from which to read

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(InputStream iStream,
                        Rectangle2D bBox)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

iStream - input from which to read

bBox - bounding box specifying which features to select, namely those whose bounding boxes intersect this one. If null, bounding box of whole shapefile is used

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(InputStream iStream,
                        String filename)
                 throws IOException,
                        VisADException

constructor

Parameters:

iStream - Inputstream

filename - Filename where we got the input stream

Throws:

IOException - On badness

VisADException - On badness

ShapefileAdapter

public ShapefileAdapter(InputStream iStream,
                        Rectangle2D bBox,
                        double coarseness)
                 throws IOException,
                        VisADException

Read an ESRI shapefile and extract all features into an in-memory structure.

Parameters:

iStream - input from which to read

bBox - bounding box specifying which features to select, namely those whose bounding boxes intersect this one. If null, bounding box of whole shapefile is used

coarseness - of plotting, 0.0 for best resolution, 0.1 for good resoution at 10:1 zoom, etc. Higher values make things display a bit faster.

Throws:

IOException

VisADException

ShapefileAdapter

public ShapefileAdapter(EsriShapefile shapefile)
                 throws VisADException

From an ESRI shapefile extract all features into an in-memory structure.

Parameters:

shapefile - input from which to extract features

Throws:

VisADException

Method Detail

makeSet

public static UnionSet makeSet(List sets)
                        throws VisADException

Utility to make a set

Parameters:

sets - List of sets

Throws:

VisADException - On badness

getFeatureType

public int getFeatureType()

What is the feature type

Returns:

Feature type

getDbFile

public DbaseFile getDbFile()

Get the db file. May be null.

Returns:

db file

getData

public UnionSet getData()

getData creates a VisAD UnionSet type with the MathType specified thru one of the other methods. By default, the MathType is a RealTupleType of Latitude,Longitude, so the UnionSet (a union of Gridded2DSets) will have lat/lon values. Each Gridded2DSet is a line segment that is supposed to be drawn as a continuous line. The UnionSet is null if there are no maplines in the domain of the display.

Returns:

the data as a UnionSet