util
Class IsoMaker

java.lang.Object
  util.CommandLineParser
      util.IsoMaker

public class IsoMaker
extends CommandLineParser

A class for extracting a single line out of an ascii-column file. If one has a block-ascii file of numbers and wants to extract the line of this file where the value of a specific column is closest to a specified value, this class does the job for you. The impuls for writing this class came from the problem of having a bunch of stellar-evolution tracks giving luminosity, temperature and age for a certain mass, but wanting to extract isochrones out of it.

The class takes command-line arguments as follows:

• -a : Append output to a data file of the given name. If the file does not exists, it is created. If this option is missing, output is dumped to standard out.
• -i : The number of the column where we extract the closest match to the value provided from.
• -d : The list of columns that should be dumped on the matching line. The individual numbers must be separated with commas, and the entire string must be protected, i.e. either without whitespaces or within quotes.
• -v : The value to scan for. Together with the -i argument this switch defines which line should be extracted from the file.
The commands itself are the file names to be scanned.

Nested Class Summary

Nested classes/interfaces inherited from class util.CommandLineParser

CommandLineParser.Test

Field Summary

private static String	FOOT The footer message.
static String	ONESWITCH The one-argument switches.
private static Map<String,String>	USE The usage map.

Constructor Summary

IsoMaker()
Creates a new iso-maker.

Method Summary

static void	main(String[] arg) Scans a list of block-ascii files for the closest occurence of a specified value in a specified column.
boolean	process() Processes the command line arguments.
private static void	scanFile(File scan, double val, int nr, PrintWriter dump, int[] specified) Scans a single block-ascii file.

Methods inherited from class util.CommandLineParser

getArguments, getCommandLine, getCommands, getRegisteredSwitches, hasAnySwitch, hasSwitch, hasSwitch, haveAllSwitches, parse, printCommandLine, registerLine, registerSwitches, setCommands, staticUsage, usage

Methods inherited from class java.lang.Object

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

Field Detail

ONESWITCH

public static final String ONESWITCH

The one-argument switches.

See Also:

Constant Field Values

USE

private static final Map<String,String> USE

The usage map.

FOOT

private static final String FOOT

The footer message.

See Also:

Constant Field Values

Constructor Detail

IsoMaker

public IsoMaker()

Creates a new iso-maker. The command line switches are registered, but not parsed.

Method Detail

process

public boolean process()
                throws IOException

Processes the command line arguments. The command lines must be parsed prior to a call to this method. All syntax checks are performed within this method.

Throws:

IOException

scanFile

private static final void scanFile(File scan,
                                   double val,
                                   int nr,
                                   PrintWriter dump,
                                   int[] specified)
                            throws IOException

Scans a single block-ascii file. The column specified in the third argument is parsed to a double value and the line matching closest to the target value, the second argument, is dumped to the specified print writer. If the last argument is non-null, only the columns specified are dumped.

Throws:

IOException

main

public static void main(String[] arg)
                 throws ParseException,
                        IOException

Scans a list of block-ascii files for the closest occurence of a specified value in a specified column. The matching line is dumped either to a file or to standard out.

Throws:

ParseException

IOException