org.gicentre.geomap.io

Class ShapefileWriter

java.lang.Object

org.gicentre.geomap.io.ShapefileWriter

public class ShapefileWriter
extends java.lang.Object

Writes out a geoMap object as a collection of ESRI shapefiles. A shapefile consists of 3 separate files - name.shp containing the geometry; name.shx containing the file offsets for the components that make up the geometry; and name.dbf containing the attributes. If a geoMap object contains more than one object type (point, line or area), a triplet of files is written for each type.

Version:

3.2, 4th March, 2017.

Author:

Jo Wood, giCentre.

Constructor Summary

Constructors

Constructor and Description
ShapefileWriter(GeoMap geoMap, processing.core.PApplet parent) Creates the object capable of writing the given geoMap object as a shapefile.

Method Summary

Modifier and Type	Method and Description
boolean	write(java.lang.String fileName) Writes out one or more shapefiles representing the geoMap object supplied to the constructor.
protected static boolean	writeDoubleLittleEndian(double value, java.io.OutputStream os) Writes a little-endian 8-byte double to the given output stream.
protected static boolean	writeIntLittleEndian(int value, java.io.OutputStream os) Writes a 32 bit unsigned little-endian ('Intel') word of data to the given output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

ShapefileWriter

public ShapefileWriter(GeoMap geoMap,
                       processing.core.PApplet parent)

Creates the object capable of writing the given geoMap object as a shapefile.

Parameters:

geoMap - geoMap object to write.

parent - Parent sketch.

Method Detail

write

public boolean write(java.lang.String fileName)

Writes out one or more shapefiles representing the geoMap object supplied to the constructor. The given fileName can be supplied with or without an extension, but this method will write three files with the same base and extensions .shp, .shx and .dbf. If the geoMap object contains more than one type, P, L or A will be appended to the relevant file name.

Parameters:

fileName - Name of core of the three files to create.

Returns:

True if written successfully.

writeIntLittleEndian

protected static boolean writeIntLittleEndian(int value,
                                              java.io.OutputStream os)

Writes a 32 bit unsigned little-endian ('Intel') word of data to the given output stream.

Parameters:

value - Value to write to output stream.

os - Output stream to process.

Returns:

True if written successfully.

writeDoubleLittleEndian

protected static boolean writeDoubleLittleEndian(double value,
                                                 java.io.OutputStream os)

Writes a little-endian 8-byte double to the given output stream.

Parameters:

value - Value to write to output stream.

os - Output stream.

Returns:

True if written successfully.