Package org.geotools.referencing.crs

Class DefaultTemporalCRS

Object

Formattable

AbstractIdentifiedObject

AbstractReferenceSystem

AbstractCRS

AbstractSingleCRS

DefaultTemporalCRS

All Implemented Interfaces:

Serializable, CoordinateReferenceSystem, SingleCRS, TemporalCRS, IdentifiedObject, ReferenceSystem

public class DefaultTemporalCRS
extends AbstractSingleCRS
implements TemporalCRS

A 1D coordinate reference system used for the recording of time.

Used with CS type(s)
Time

Since:

2.1

Author:

Martin Desruisseaux (IRD)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final DefaultTemporalCRS	DUBLIN_JULIAN	Time measured in days since December 31, 1899 at 12:00 UTC.
static final DefaultTemporalCRS	JAVA	Time measured in milliseconds since January 1st, 1970 at 00:00 UTC.
static final DefaultTemporalCRS	JULIAN	Time measured in days since January 1st, 4713 BC at 12:00 UTC.
static final Unit<Time>	MILLISECOND	Unit for milliseconds.
static final DefaultTemporalCRS	MODIFIED_JULIAN	Time measured in days since November 17, 1858 at 00:00 UTC.
static final DefaultTemporalCRS	TRUNCATED_JULIAN	Time measured in days since May 24, 1968 at 00:00 UTC.
static final DefaultTemporalCRS	UNIX	Time measured in seconds since January 1st, 1970 at 00:00 UTC.

Fields inherited from class AbstractSingleCRS

datum

Fields inherited from class AbstractCRS

coordinateSystem

Fields inherited from class AbstractIdentifiedObject

EMPTY_ALIAS_ARRAY, EMPTY_IDENTIFIER_ARRAY, IDENTIFIER_COMPARATOR, NAME_COMPARATOR, REMARKS_COMPARATOR

Fields inherited from class Formattable

SINGLE_LINE

Fields inherited from interface IdentifiedObject

ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Fields inherited from interface ReferenceSystem

DOMAIN_OF_VALIDITY_KEY, SCOPE_KEY

Constructor Summary

Constructors

Constructor	Description
DefaultTemporalCRS(String name, TemporalDatum datum, TimeCS cs)	Constructs a temporal CRS from a name.
DefaultTemporalCRS(Map<String,?> properties, TemporalDatum datum, TimeCS cs)	Constructs a temporal CRS from a set of properties.
DefaultTemporalCRS(TemporalCRS crs)	Constructs a new temporal CRS with the same values than the specified one.
DefaultTemporalCRS(TemporalDatum datum, TimeCS cs)	Constructs a temporal CRS with the same properties than the given datum.

Method Summary

Modifier and Type	Method	Description
int	calculateHashCode()	Returns a hash value for this geographic CRS.
TimeCS	getCoordinateSystem()	Returns the coordinate system.
TemporalDatum	getDatum()	Returns the datum.
Date	toDate(double value)	Convert the given value into a Date object.
double	toValue(Date time)	Convert the given date into a value in this axis unit.
static DefaultTemporalCRS	wrap(TemporalCRS crs)	Wraps an arbitrary temporal CRS into a Geotools implementation.

Methods inherited from class AbstractSingleCRS

equals, getAxis, getDimension

Methods inherited from class AbstractCRS

distance, formatWKT, hashCode

Methods inherited from class AbstractReferenceSystem

getDomainOfValidity, getScope

Methods inherited from class AbstractIdentifiedObject

asSet, ensureAngularUnit, ensureLinearUnit, ensureNonNull, ensureNonNull, ensureTimeUnit, equals, equals, equals, equals, getAlias, getIdentifier, getIdentifier, getIdentifiers, getName, getName, getName, getProperties, getProperties, getRemarks, nameMatches, nameMatches, nameMatches

Methods inherited from class Formattable

cleanupThreadLocals, toString, toWKT, toWKT, toWKT, toWKT

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface IdentifiedObject

getAlias, getIdentifiers, getName, getRemarks, toWKT

Methods inherited from interface ReferenceSystem

getDomainOfValidity, getScope

Field Details

JULIAN

public static final DefaultTemporalCRS JULIAN

Time measured in days since January 1st, 4713 BC at 12:00 UTC.

Since:

2.5

See Also:

• DefaultTemporalDatum.JULIAN
• DefaultTimeCS.DAYS

MODIFIED_JULIAN

public static final DefaultTemporalCRS MODIFIED_JULIAN

Time measured in days since November 17, 1858 at 00:00 UTC. A Modified Julian day (MJD) is defined relative to Julian day (JD) as MJD = JD − 2400000.5.

Since:

2.5

See Also:

• DefaultTemporalDatum.MODIFIED_JULIAN
• DefaultTimeCS.DAYS

TRUNCATED_JULIAN

public static final DefaultTemporalCRS TRUNCATED_JULIAN

Time measured in days since May 24, 1968 at 00:00 UTC. This epoch was introduced by NASA for the space program. A Truncated Julian day (TJD) is defined relative to Julian day (JD) as TJD = JD − 2440000.5.

Since:

2.5

See Also:

• DefaultTemporalDatum.TRUNCATED_JULIAN
• DefaultTimeCS.DAYS

DUBLIN_JULIAN

public static final DefaultTemporalCRS DUBLIN_JULIAN

Time measured in days since December 31, 1899 at 12:00 UTC. A Dublin Julian day (DJD) is defined relative to Julian day (JD) as DJD = JD − 2415020.

Since:

2.5

See Also:

• DefaultTemporalDatum.DUBLIN_JULIAN
• DefaultTimeCS.DAYS

UNIX

public static final DefaultTemporalCRS UNIX

Time measured in seconds since January 1st, 1970 at 00:00 UTC.

Since:

2.5

See Also:

• DefaultTemporalDatum.UNIX
• DefaultTimeCS.SECONDS

JAVA

public static final DefaultTemporalCRS JAVA

Time measured in milliseconds since January 1st, 1970 at 00:00 UTC.

Since:

2.5

See Also:

• DefaultTemporalDatum.UNIX
• DefaultTimeCS.MILLISECONDS

MILLISECOND

public static final Unit<Time> MILLISECOND

Unit for milliseconds. Useful for conversion from and to Date objects.

Constructor Details

DefaultTemporalCRS

public DefaultTemporalCRS(TemporalCRS crs)

Constructs a new temporal CRS with the same values than the specified one. This copy constructor provides a way to wrap an arbitrary implementation into a Geotools one or a user-defined one (as a subclass), usually in order to leverage some implementation-specific API. This constructor performs a shallow copy, i.e. the properties are not cloned.

Parameters:

crs - The coordinate reference system to copy.

Since:

2.2

See Also:

• wrap(org.geotools.api.referencing.crs.TemporalCRS)

DefaultTemporalCRS

public DefaultTemporalCRS(TemporalDatum datum,
 TimeCS cs)

Constructs a temporal CRS with the same properties than the given datum. The inherited properties include the name and aliases.

Parameters:

datum - The datum.

cs - The coordinate system.

Since:

2.5

DefaultTemporalCRS

public DefaultTemporalCRS(String name,
 TemporalDatum datum,
 TimeCS cs)

Constructs a temporal CRS from a name.

Parameters:

name - The name.

datum - The datum.

cs - The coordinate system.

DefaultTemporalCRS

public DefaultTemporalCRS(Map<String,?> properties,
 TemporalDatum datum,
 TimeCS cs)

Constructs a temporal CRS from a set of properties. The properties are given unchanged to the super-class constructor.

Parameters:

properties - Set of properties. Should contains at least "name".

cs - The coordinate system.

datum - The datum.

Method Details

wrap

public static DefaultTemporalCRS wrap(TemporalCRS crs)

Wraps an arbitrary temporal CRS into a Geotools implementation. This method is usefull if the user wants to take advantage of toDate(double) and toValue(java.util.Date) methods. If the supplied CRS is already an instance of DefaultTemporalCRS or is null, then it is returned unchanged.

Parameters:

crs - The temporal CRS to wrap.

Returns:

The given CRS as a DefaultTemporalCRS.

getCoordinateSystem

public TimeCS getCoordinateSystem()

Returns the coordinate system.

Specified by:

getCoordinateSystem in interface CoordinateReferenceSystem

Specified by:

getCoordinateSystem in interface SingleCRS

Specified by:

getCoordinateSystem in interface TemporalCRS

Overrides:

getCoordinateSystem in class AbstractCRS

Returns:

The coordinate system.

getDatum

public TemporalDatum getDatum()

Returns the datum.

Specified by:

getDatum in interface SingleCRS

Specified by:

getDatum in interface TemporalCRS

Overrides:

getDatum in class AbstractSingleCRS

Returns:

The datum.

toDate

public Date toDate(double value)

Convert the given value into a Date object. This method is the converse of toValue(java.util.Date).

Parameters:

value - A value in this axis unit.

Returns:

The value as a date.

toValue

public double toValue(Date time)

Convert the given date into a value in this axis unit. This method is the converse of toDate(double).

Parameters:

time - The value as a date.

Returns:

value A value in this axis unit.

calculateHashCode

public int calculateHashCode()

Returns a hash value for this geographic CRS.

Overrides:

calculateHashCode in class AbstractSingleCRS

Returns:

The hash code value. This value doesn't need to be the same in past or future versions of this class.