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Contains implementations of Coordinate Reference Systems (CRS), conversion and transformation services.

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    package org.geotools.referencing.crs
  
  
  {@linkplain org.geotools.referencing.crs.AbstractCRS Coordinate reference systems} implementation.
  An explanation for this package is provided in the {@linkplain org.opengis.referencing.crs OpenGIS® javadoc}.
  The remaining discussion on this page is specific to the Geotools implementation.

  {@link org.geotools.referencing.crs.AbstractCRS} is the base class for all
  coordinate reference systems (CRS). CRS can have an arbitrary number of dimensions. Some are two-dimensional
  (e.g. {@link org.geotools.referencing.crs.DefaultGeographicCRS GeographicCRS} and
  {@link org.geotools.referencing.crs.DefaultProjectedCRS ProjectedCRS}), while some others are one-dimensional
  (e.g. {@link org.geotools.referencing.crs.DefaultVerticalCRS VerticalCRS} and
  {@link org.geotools.referencing.crs.DefaultTemporalCRS TemporalCRS}). Those simple coordinate systems can be
  used as building blocks for more complex coordinate reference systems. For example, it is possible to construct
  a three-dimensional CRS with (latitude, longitude, time) with an aggregation
  of {@link org.geotools.referencing.crs.DefaultGeographicCRS GeographicCRS} and
  {@link org.geotools.referencing.crs.DefaultTemporalCRS TemporalCRS}. Such aggregations
  are built with {@link org.geotools.referencing.crs.DefaultCompoundCRS CompoundCRS}.