# All Packages

- Package Summary
  Package | Description
  --- | ---
  org.apache.sis.console | Command line interface for Apache SIS.
  org.apache.sis.coverage | Functions that associates positions within a bounded space (its domain) to values (its range).
  org.apache.sis.coverage.grid | A coverage backed by a regular grid.
  org.apache.sis.distance |
  org.apache.sis.feature | Defines the structure and content of views of real-world phenomenon.
  org.apache.sis.feature.builder | Helper classes for creating `FeatureType` instances.
  org.apache.sis.geometry | Basic geometric objects (envelopes and direct positions).
  org.apache.sis.image | Provides helper classes for handling Java2D rendered images together with some operations.
  org.apache.sis.index.tree | A simple quadtree implementation.
  org.apache.sis.io | Extensions to standard Java I/O (`Reader`, `Writer`, `Appendable`).
  org.apache.sis.io.wkt | Well Known Text (WKT) parsing and formatting.
  org.apache.sis.math | A set of mathematical objects and algebraic utilities.
  org.apache.sis.measure | Units of measurements, values related to measurement (like angles and ranges) and their formatters.
  org.apache.sis.metadata | Root package for various metadata implementations.
  org.apache.sis.metadata.iso | Root package for ISO 19115 metadata about resources (data or services).
  org.apache.sis.metadata.iso.acquisition | Information about the measuring instruments, the platform carrying them, and the mission to which the data contributes.
  org.apache.sis.metadata.iso.citation | Reference to the data or service (citation, responsible party, contact information).
  org.apache.sis.metadata.iso.constraint | Information about legal and security constraints placed on data.
  org.apache.sis.metadata.iso.content | Description of the dataset content.
  org.apache.sis.metadata.iso.distribution | Information about the options for obtaining a resource (data or service).
  org.apache.sis.metadata.iso.extent | Information about spatial, vertical, and temporal extent.
  org.apache.sis.metadata.iso.identification | Information to uniquely identify the data or service.
  org.apache.sis.metadata.iso.lineage | Information about the sources and production processes of a dataset.
  org.apache.sis.metadata.iso.maintenance | Information about the frequency and scope of data updates.
  org.apache.sis.metadata.iso.quality | Information about data quality, accuracy and consistency of a dataset.
  org.apache.sis.metadata.iso.spatial | Information about the mechanisms (grid or vector) used to represent spatial data.
  org.apache.sis.metadata.sql | An implementation of Metadata interfaces fetching the data from an SQL database.
  org.apache.sis.parameter | Descriptions and values of parameters used by a coordinate operation or a process.
  org.apache.sis.profile.france | French extensions defined by the Association Française de Normalisation (AFNOR).
  org.apache.sis.profile.japan | Japanese extensions to netCDF reader.
  org.apache.sis.referencing | Base classes for reference systems used for general positioning.
  org.apache.sis.referencing.crs | Coordinate Reference System (CRS) definitions as coordinate systems related to the earth through datum.
  org.apache.sis.referencing.cs | Coordinate System (CS) definitions as the set of coordinate system axes that spans the coordinate space.
  org.apache.sis.referencing.datum | Relationship of a `CoordinateSystem` (an abstract mathematical entity) to the earth or other system.
  org.apache.sis.referencing.factory | Creates Coordinate Reference System (CRS) objects from given properties or authority codes.
  org.apache.sis.referencing.factory.sql | Factories for geodetic objects defined in a SQL database, typically the EPSG dataset.
  org.apache.sis.referencing.gazetteer | Mapping between geographic identifiers (addresses, grid indexes…) and locations (descriptions, coordinates…).
  org.apache.sis.referencing.operation | Relationship between any two Coordinate Reference Systems (CRS).
  org.apache.sis.referencing.operation.builder | Helper classes for creating Math Transforms from a set of points.
  org.apache.sis.referencing.operation.matrix | Matrix implementations for spatiotemporal referencing.
  org.apache.sis.referencing.operation.projection | Map projection implementations.
  org.apache.sis.referencing.operation.transform | Conversions or transformations of multi-dimensional coordinate points.
  org.apache.sis.setup | Provides information and some controls about SIS configuration.
  org.apache.sis.storage | Data store base types for retrieving and saving geospatial data in various storage formats.
  org.apache.sis.storage.earthobservation | Metadata readers for some format used in Earth observation (Landsat, MODIS).
  org.apache.sis.storage.event | Provides interfaces and classes for dealing with different types of events fired by resources.
  org.apache.sis.storage.geotiff | Maps ISO metadata elements from/to the GeoTIFF tags.
  org.apache.sis.storage.gps | Structures related to Global Positioning System (GPS).
  org.apache.sis.storage.netcdf | Maps ISO metadata elements from/to the Climate and Forecast (CF) attributes in a netCDF file.
  org.apache.sis.storage.sql | Data store capable to read and create features from a JDBC connection to a database.
  org.apache.sis.util | Simple data objects and miscellaneous utilities.
  org.apache.sis.util.collection | Addition to the collection framework.
  org.apache.sis.util.iso | Implementations of GeoAPI types from the `org.opengis.util` package.
  org.apache.sis.util.logging | Extensions to the JDK logging framework.
  org.apache.sis.xml | Provides methods for marshalling and unmarshalling SIS objects in XML.