uk.ac.starlink.ttools.scheme

Class SkySimScheme

java.lang.Object

uk.ac.starlink.ttools.scheme.SkySimScheme

All Implemented Interfaces:

Documented, TableScheme

public class SkySimScheme
extends Object
implements TableScheme, Documented

TableScheme that can provide a simulated view of the sky. The current implementation uses data sampled from Gaia EDR3. Of course the real sky is not represented, but at first glance the rough distribution of stars across the sky and some basic photometry is plausible. The output table can be of arbitrary size. This can therefore be used for certain kinds of test data.

Since:

6 Aug 2020

Author:

Mark Taylor

Constructor Summary

Constructors

Constructor and Description
SkySimScheme()

Method Summary

Modifier and Type	Method and Description
StarTable	createTable(String argtxt) Turns a scheme-specific specification into a table.
String	getExampleSpecification() Returns a scheme-specific specification string suitable for use in examples.
String	getSchemeName() Returns the name of this scheme.
String	getSchemeUsage() Returns a short, plain-text usage string.
String	getXmlDescription() Returns user-directed documentation in XML format.

Methods inherited from class java.lang.Object

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

Constructor Detail

SkySimScheme

public SkySimScheme()

Method Detail

getSchemeName

public String getSchemeName()

Description copied from interface: TableScheme

Returns the name of this scheme. This string must be alphanumeric and should be short. It will be used between the colons in a table specification.

Specified by:

getSchemeName in interface TableScheme

Returns:

scheme name

getSchemeUsage

public String getSchemeUsage()

Description copied from interface: TableScheme

Returns a short, plain-text usage string. This should just represent the legal syntax for the specification string.

Specified by:

getSchemeUsage in interface TableScheme

Returns:

usage syntax

getXmlDescription

public String getXmlDescription()

Description copied from interface: Documented

Returns user-directed documentation in XML format.

The output should be a sequence of one or more <P> elements, using XHTML-like XML. Since rendering may be done in a number of contexts however, use of the full range of XHTML elements is discouraged. Where possible, the content should stick to simple markup such as the elements P, A, UL, OL, LI, DL, DT, DD EM, STRONG, I, B, CODE, TT, PRE.

Specified by:

getXmlDescription in interface Documented

Returns:

XML description of this object

getExampleSpecification

public String getExampleSpecification()

Description copied from interface: TableScheme

Returns a scheme-specific specification string suitable for use in examples. It should return a table short enough to appear in textual documentation. If no suitable example is available, null may be returned.

Specified by:

getExampleSpecification in interface TableScheme

Returns:

scheme-specific specification (scheme name part not included), or null

createTable

public StarTable createTable(String argtxt)
                      throws IOException

Description copied from interface: TableScheme

Turns a scheme-specific specification into a table. In case of any error, an exception should be thrown.

Specified by:

createTable in interface TableScheme

Parameters:

argtxt - scheme-specific table specification (scheme name part is not included)

Returns:

created table, not null

Throws:

TableFormatException - if the format of the specification is syntactically incorrect (will typically provoke an error containing the schemeUsage string)

IOException - if there is some other error in creating the table