[Live-demo] GEOS Overview
Cameron Shorter
cameron.shorter at gmail.com
Sun Apr 1 06:46:51 EDT 2012
Frank,
I've reviewed your Geos Overview. It looks pretty good. I've made a few
changes, nothing too major.
One thing I wish to check is the "Implemented Standards", which I've
introduced.
Are we right to add the following:
Implemented Standards
OpenGIS Simple Features for SQL spatial predicate functions and
spatial operators
You can see all my suggested changes here:
http://trac.osgeo.org/osgeo/changeset?new=7809%40livedvd%2Fgisvm%2Ftrunk%2Fdoc%2Fen%2Foverview%2Fgeos_overview.rst&old=7808%40livedvd%2Fgisvm%2Ftrunk%2Fdoc%2Fen%2Foverview%2Fgeos_overview.rst
Frank, do you have suggestions for a GEOS image?
I've copied the HTML below for easy reading:
GEOS
Spatial Library
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology
Suite (JTS) <http://www.vividsolutions.com/jts/JTSHome.htm>. It includes
the OpenGIS Simple Features for SQL spatial predicate functions and
spatial operators, as well as specific JTS enhanced topology functions.
GEOS is the most widely used geospatial C++ geometry library, being used
by open source projects such as /PostGIS/
<cid:part2.05050505.01010906 at gmail.com>, /QGIS/
<cid:part3.00080201.00080102 at gmail.com>, /GDAL/OGR/
<cid:part4.07050107.04040400 at gmail.com> and /MapServer/
<cid:part5.01070008.09090500 at gmail.com>, and by proprietary products
including FME <http://www.safe.com/fme/fme-technology/>.
Implemented Standards
* OpenGIS Simple Features for SQL spatial predicate functions and
spatial operators
Core Features
* Geometries: Point, LineString, Polygon, MultiPoint, MultiLineString,
MultiPolygon, GeometryCollection
* Predicates: Intersects, Touches, Disjoint, Crosses, Within,
Contains, Overlaps, Equals, Covers
* Operations: Union, Distance, Intersection, Symmetric Difference,
Convex Hull, Envelope, Buffer, Simplify, Polygon Assembly, Valid,
Area, Length,
* Prepared geometries (pre-spatially indexed)
* STR spatial index
* OGC Well Known Text (WKT) and Well Known Binary (WKB) encoders and
decoders.
* C and C++ API (C API gives long term ABI stability)
* Thread safe (using the reentrant API)
Details
*Website:* http://geos.osgeo.org/
*Licence:* LGPL
*Software Version:* 3.3.2
*Supported Platforms:* Windows, Linux, Mac
*API Interfaces:* C, C++
*Support:* http://lists.osgeo.org/mailman/listinfo/geos-devel,
http://www.osgeo.org/search_profile
On 01/04/12 05:10, Frank Warmerdam wrote:
> Folks,
>
> I have prepared a preliminary geos overview and checked it into the
> directory with the other overviews. There is no screen snapshot for
> GEOS.
>
>
> I tried the online RST previewer but it was pretty limited so hopefully
> things will look ok when processed for real.
>
> I have not linked the document in any index yet.
>
> Best regards,
--
Cameron Shorter
Geospatial Solutions Manager
Tel: +61 (0)2 8570 5050
Mob: +61 (0)419 142 254
Think Globally, Fix Locally
Geospatial Solutions enhanced with Open Standards and Open Source
http://www.lisasoft.com
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