jwo.landserf.process.io
Class TextVectorIO

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

public class TextVectorIO

extends FileIO

Contains a collection of static methods for reading and writing text vector files.

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

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

Method Summary

static AttributeTable	readAttributeTable(String fileName, LSThread lsThread) Reads the given attribute file and returns an attribute table with its contents.
static VectorMap	readVector(String fileName, int fileFormat, GISFrame gisFrame, LSThread lsThread) Reads a text file in the given format and creates a vector map from it.
static boolean	writeAttributeTable(AttributeTable attTable, String fileName, LSThread lsThread) Writes out the given attribute table to the given file.
static boolean	writeVector(VectorMap vectorMap, String fileName, int fileFormat, GISFrame gisFrame, LSThread lsThread) Writes a text file in the given format based on the supplied vector map.

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

TextVectorIO

public TextVectorIO()

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

Method Detail

readVector

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

Reads a text file in the given format and creates a vector map from it.

Parameters:

fileName - Name of file to read.

fileFormat - Type of text file to read (see FileHandler).

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.

Returns:

Vector map containing read data, or null if problems reading.

See Also:

FileHandler

writeVector

public static boolean writeVector(VectorMap vectorMap,
                                  String fileName,
                                  int fileFormat,
                                  GISFrame gisFrame,
                                  LSThread lsThread)

Writes a text file in the given format based on the supplied vector map.

Parameters:

vectorMap - Vector map to write.

fileName - Name of file to create.

fileFormat - Type of text file to create.

gisFrame - GUI in which to report progress.

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

Returns:

True if written sucessfully.

readAttributeTable

public static AttributeTable readAttributeTable(String fileName,
                                                LSThread lsThread)

Reads the given attribute file and returns an attribute table with its contents. Returns null if problem reading attribute file. Lines starting with a # are ignored.

Parameters:

fileName - Name of attribute file to read.

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

Returns:

Attribute table holding data or null if problems reading.

writeAttributeTable

public static boolean writeAttributeTable(AttributeTable attTable,
                                          String fileName,
                                          LSThread lsThread)

Writes out the given attribute table to the given file.

Parameters:

attTable - Attribute table to write.

fileName - Name of file to contain table.

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

Returns:

true if written successfully.