jwo.landserf.process.io
Class ShapefileIO

java.lang.Object
  jwo.landserf.process.io.FileIO
      jwo.landserf.process.io.ShapefileIO

public class ShapefileIO

extends FileIO

Collection of methods for reading ESRI shapefiles. The 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. The index (.shx) file is ignored and the database (.dbf) file is optional.

Version:

2.2, 6th December, 2004.

Author:

Jo Wood

Field Summary

Fields inherited from class jwo.landserf.process.io.FileIO

BIG_ENDIAN, bitsPerValue, byteOrder, errorMessage, filePointer, GATHER_INFO, lineNumber, LITTLE_ENDIAN, LOAD_ALL, LOAD_SELECTED, nullCode, substituteNull, useMultiplier, zMultiplier

Constructor Summary

ShapefileIO()
There should be no need to call the constructor explicitly since all methods are static.

Method Summary

static VectorMap

readVector(String fileName, GISFrame gisFrame, LSThread lsThread) Reads the given shapefile (assumes file is called something.shp and that there are also files called something.shx and something.dbf in the same directory.

Methods inherited from class jwo.landserf.process.io.FileIO

getErrorMessage, readByte, readByte, readCharacters, readCharacters, readDouble, readDouble, readDoubleBigEndian, readDoubleBigEndian, readDoubleLittleEndian, readDoubleLittleEndian, readFloat, readFloat, readFloatBigEndian, readFloatBigEndian, readFloatLittleEndian, readFloatLittleEndian, readInt, readInt, readIntBigEndian, readIntBigEndian, readIntLittleEndian, readIntLittleEndian, readNextWord, readShort, readShort, readShortBigEndian, readShortBigEndian, readShortLittleEndian, readShortLittleEndian, reset, seek, skip, skip, writeByte, writeCharacters, writeDouble, writeDoubleBigEndian, writeDoubleLittleEndian, writeFloat, writeFloatBigEndian, writeFloatLittleEndian, writeInt, writeIntBigEndian, writeIntLittleEndian, writeLine, writeShort, writeShortBigEndian, writeShortLittleEndian

Methods inherited from class java.lang.Object

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

Constructor Detail

ShapefileIO

public ShapefileIO()

There should be no need to call the constructor explicitly since all methods are static.

Method Detail

readVector

public static VectorMap readVector(String fileName,
                                   GISFrame gisFrame,
                                   LSThread lsThread)

Reads the given shapefile (assumes file is called something.shp and that there are also files called something.shx and something.dbf in the same directory.

Parameters:

fileName - Name of .shp file to process.

gisFrame - GUI in which to report results.

lsThread - Thread that called this method (allows it to be interrupted). Can be null, in which case, method cannot be interrupted.