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PleiadesGeocoder
Category: Geospatial
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Current release
No stable release available yet.
Experimental releases
Upcoming and alpha/beta/candidate releases
- Alpha releases should only be used for testing and development.
- Beta releases and Release Candidates are normally released for production testing, but should not be used on mission-critical sites.
- Always install on a separate test server first, and make sure you have proper backups before installing.
Project Description
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Code repositoryPleiadesGeocoder provides basic geospatial capabilities for Plone, specifically:
- Geospatial annotation of content based on emerging standards. Point, line, and polygon annotations are possible.
- Serialization of annotated content to Atom (+GeoRSS) or KML, which enables content to be marshaled into Google Earth, GMaps, or OpenLayers maps.
- A geocoding tool based on geopy.
The geocoding tool uses the Google geocoding API to find matches for Plone locations, and return spatial coordinates. The API gives you worldwide city-level geocoding precision and address-level precision for the United States.
For more details see http://icon.stoa.org/trac/pleiades/wiki/PleiadesGeocoder.
Geospatial Annotation
Content objects that provide Products.PleiadesGeocoder.interfaces.IGeoreferenceable (see interfaces.py) and have registered adapters to Products.PleiadesGeocoder.interfaces.IGeoItemSimple can be annotated via the edit_geo_form. See for example:
http://pleiades.stoa.org/batlas/65/edit_geo_form
PleiadesGeocoder marks all AT content types as providers of IGeoreferenceable and IGeoItemSimple.
In Python, content objects can be geo-annotated like so:
>>> ob = app['plone']['batlas']['65'] >>> coordinates = (((28.54268, 38.08102, 0.0), ...)) >>> geoitem.setGeoInterface('Polygon', coordinates) >>> geoitem.geom_type 'Polygon' >>> geoitem.coords (((28.54268, 38.08102, 0.0), ...))
KML and GeoRSS views
Annotated objects that provide Products.PleiadesGeocoder.interfaces.IGeoserializable have GeoRSS and KML representations via georss and kml views. See for example:
http://pleiades.stoa.org/batlas/65/georss
http://pleiades.stoa.org/batlas/65/kml
Furthermore, folderish objects containing geo-annotated content that provide that same interface have similiar views. See
http://pleiades.stoa.org/batlas/georss
http://pleiades.stoa.org/batlas/kml
PleiadesGeocoder marks all AT folders and topics as providers of IGeoserializable.
Geocoding Tool
Currently, geocoding aims at one of Plone's standard metadata fields: location. This field is for strings like:
"Chapel Hill, NC"
"London, England"
Our current functionality focuses on site members. PleiadesGeocoder adds a new string property named 'spatialCoordinates' to your memberdata property sheet, and overrides the default personalize.py script. On any update of member location, the portal_geocoder tool will attempt to find the proper coordinates by using the Google geocoding service. The coordinates are then stored in the member's 'spatialCoordinates' property.
Views of a site's geocoded members can be had at the URLs:
${portal_url}/Members/georss
${portal_url}/Members/kml
Support
Please subscribe to the pleiades-software email list. The archives may be viewed online without subscription.
About Pleiades
Pleiades is an international research network and associated web portal and content management system devoted to the study of ancient geography.
See http://icon.stoa.org/trac/pleiades/wiki.
Funding for the creation of this software was provided by a grant from the U.S. National Endowment for the Humanities.
