Recent Development

For the 2.2.x branch the coverage module has:

• fixed some show stopping reprojection bugs
• fixed some performance issues (used to burn memory, now it slightly singes it)

Module Status

The coverage module is incomplete but may be used for light work. You are warned however.

The coverage api is proceeding on a branch and may be progress is visiable based on the geoserver WCS branch. The uDig project is limping along based on what is in 2.2.x right now, but the result is only of limited utility, and they are exploring working with the OSSIM project.

The OSSIM project has binding as is interested in hooking in behind the new coverage API, giving everyone the best of both worlds (pure java, JAI, and straight C++ bindings).

If you have a chance to volunteer check out the coverage branch, I am sure simboss would love feedback from early adopters.

Outstanding Issues

The following issues (bugs and suggestions) have been raised on the geotools coverage module:

jira.codehaus.org (25 issues)
T	Key	Summary	Assignee	Reporter	Pr	Status	Res	Created	Updated	Due
	GEOT-482	GridCoverage2D.getInterpolation() method needs to be overrided in Interpolator2D	Martin Desruisseaux	Martin Desruisseaux		Closed	FIXED	Mar 27, 2005	May 30, 2005
	GEOT-562	Remove the documentation in 2.1 branch for legacy GridCoverage operations not yet ported to the new framework	Martin Desruisseaux	Martin Desruisseaux		Closed	FIXED	Jun 05, 2005	Jun 05, 2005
	GEOT-49	Rename "ColorBar" widget as "ColorRamp"	Martin Desruisseaux	Martin Desruisseaux		Closed	FIXED	Nov 10, 2003	Jun 29, 2006
	GEOT-521	WarpTransform2D.getWrap(...) should avoid creating WarpAdapter as much as possible	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	May 05, 2005	May 05, 2005
	GEOT-522	LocalizationGridTransform2D should defines a WarpGrid	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	May 05, 2005	May 05, 2005
	GEOT-537	Handle errors in JAI processing chain using javax.media.jai.ImagingListener	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	May 29, 2005	May 29, 2005
	GEOT-655	"NodataFilter" operation should operates only on some kind of NaN values	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	Aug 07, 2005	Aug 07, 2005
	GEOT-654	CoverageProcessor should setup ImageLayout with serializable ColorModel / SampleModel	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	Aug 07, 2005	Aug 07, 2005
	GEOT-608	ClassCastException in j2d.RenderedLayerFactory using GridCoverage	Martin Desruisseaux	Martin Desruisseaux		Closed	FIXED	Jul 05, 2005	Jul 10, 2005
	GEOT-701	GridGeometry improvements	Martin Desruisseaux	Alessio Fabiani		Closed	FIXED	Oct 03, 2005	Jun 23, 2006
	GEOT-819	The method GridCoverageFactory.create((CharSequence)"name", float[][], GeneralEnvelope) cannot return	Martin Desruisseaux	Adrian Custer		Closed	FIXED	Mar 14, 2006	Mar 14, 2006
	GEOT-114	Unpacked categories list may dysfunction	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	Mar 02, 2004	Mar 05, 2006
	GEOT-610	AddConst and its friend should operate on "sampleToGeophysics" when possible	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	Jul 06, 2005	Mar 05, 2006
	GEOT-1093	ColorModelFactory should consider using SoftValueHashMap instead of WeakValueHashMap	Martin Desruisseaux	Simone Giannecchini		Closed	WON'T FIX	Dec 26, 2006	Feb 01, 2008
	GEOT-1148	Move implementations to coverage and render modules	Simone Giannecchini	Jody Garnett		Closed	FIXED	Feb 01, 2007	Mar 16, 2007
	GEOT-1042	Move org.geotools.coverage.io.* to its own plugin directory.	Martin Desruisseaux	Simone Giannecchini		Closed	FIXED	Nov 24, 2006	May 04, 2007
	GEOT-1092	LookupTableFactory should consider using SoftValueHashMap instead of WeakValueHashMap	Martin Desruisseaux	Simone Giannecchini		Closed	WON'T FIX	Dec 26, 2006	Feb 01, 2008
	GEOT-1814	Exception when cropping to small region	Simone Giannecchini	Nick Newman		Open	UNRESOLVED	May 14, 2008	May 15, 2008
	GEOT-754	Design nD Reader/Writer interfaces	Bryce Nordgren	Bryce Nordgren		Open	UNRESOLVED	Nov 03, 2005	Nov 03, 2005
	GEOT-814	Coverage IWUG 1: Coverage Core	Alex Petkov	Bryce Nordgren		Resolved	FIXED	Mar 02, 2006	May 24, 2006
	GEOT-668	Inverse dimension problem in GridCoverage2d	Martin Desruisseaux	Alessio Fabiani		Closed	FIXED	Aug 22, 2005	Oct 26, 2005
	GEOT-752	Research metadata and CRS	Bryce Nordgren	Bryce Nordgren		Closed	FIXED	Nov 03, 2005	Mar 07, 2006
	GEOT-760	Retrofit GTOPO30 for nD Coverage framework	Simone Giannecchini	Bryce Nordgren		Open	UNRESOLVED	Nov 03, 2005	Nov 03, 2005
	GEOT-762	Research selection and reporting of nD coverages from WCS/WMS	Simone Giannecchini	Bryce Nordgren		Open	UNRESOLVED	Nov 03, 2005	Nov 03, 2005
	GEOT-749	Multidimensional Coverage Development	Bryce Nordgren	Bryce Nordgren		In Progress	UNRESOLVED	Nov 03, 2005	Jun 23, 2006

Since the geotools coverage model uses the interfaces from geoapi I am listing them here for reference:

jira.codehaus.org (5 issues)
T	Key	Summary	Assignee	Reporter	Pr	Status	Res	Created	Updated	Due
	GEO-59	Replace current GridCoverage interfaces by ISO 19123	Unassigned	Martin Desruisseaux		Open	UNRESOLVED	Mar 22, 2005	Oct 07, 2006
	GEO-33	GCE Rational	Unassigned	Jody Garnett		Open	UNRESOLVED	Sep 27, 2004	Feb 16, 2006
	GEO-132	Document better the departure from OGC/ISO specifications	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	Jun 03, 2008	Jun 03, 2008
	GEO-82	Coverage IWUG 2: Basic Grid Elements	Martin Desruisseaux	Bryce Nordgren		Reopened	UNRESOLVED	Mar 17, 2006	Jun 11, 2008
	GEO-129	Rename SampleDimension.sampleToGeophysics() method	Martin Desruisseaux	Martin Desruisseaux		Open	UNRESOLVED	Mar 05, 2008	Mar 05, 2008

History

The coverage API took a huge blow for the 2.1.x release where we replaced the CoordinateSystem class it was based on. It was dragged almost into usability by Richard Gould for the uDig 1.1. release. The API it was based on is from an OGC specification (called GridCoverageExchange), as much time was spent working on the parameters for this api as was put into using it.

Don't use GridCoverageExchange - use the Format objects directly!

However the OGC stopped supporting it, and work is underway to upgrade to a more stable ISO specification (see Coverage Implementation Central for current status).