GeoXML : parses KML/GML(like the results of WFS requests)/GPX and GeoRSS

This Google Maps Extension enables client-side parsing and viewing of a number of flavors of GeoXml, ncluding GML from WFS servers, GPX from GPS devices or log as well as KML and multiple flavors of GeoRSS,In addition to the XML it supports saving out and re-loading of KJSON (plans are in to split the KJSON parsing/loading and XML based parsing)

This code generally targets enabling larger data sizes in Google Maps rather than the small My Maps support provided by EGeoXml and generally supporting Open Standards

• Original Features.
  • GML parsing (such as produced by Web Feature Servers version 1.1 to 1.30)
  • GeoRSS parsing
  • GPX parsing
  • Inline KML styles
  • Basic support of StyleMaps (no special effects yet)
  • WMS based ground overlays implemented as tiled overlays
    (may use gmcrs='epsg:41001' or 'epsg:54004' or 'epsg:900913')
  • Support Random Colors (GML and any unstyled formats or unstyled kml currently use this)
  • KML Nested tree in sidebar
    customizeable icons for folders and documents and data .. various types.
  • JSONized KML loading and saving---> (KJSON) requires JSON.js script for creation
    KJSON creation page here is an example of a page which lets you load a GeoXml and save to KJSON (the saving buttons appear after a GeoXml file has been loaded) - make good Prism Web 2.0 App.
  • Background loading of images from descriptions
  • Supports auto opening of info windows for elements specified by url openbyid, openbyname
  • Basic Network Link Support (requires a defined proxy)
  • Polygon Labeling (uses polystyleclass versus pointstyleclass for points) requires ELabel on the page.
  • Asynchronous parsing of XML derived polylines and polygons (necessary for larger sets of elements)
    technique also used in JSON

Downloads

• full version (geoxmlfull.js)
• crunched version (geoxml.js) as above but not easily edited.
other possibilites? just json loading code, just kml support?

This code base includes code originally derived from Mike Williams EGeoXml but by now almost entirely re-written, PolyLine Encoder is from Mark McClure (slightly altered - primarily with attempts to accelerate - using square distance but otherwise intact) enabled polygon holes/islands (not supported in EGeoXml) and also a Clusterer from Jeff Pozkanzer at acme labs (altered to support polys and doing double duty as a delaid sidebar writing mechanismm) clustering is mostly disabled changed the number of markers to 650 and polylines are not added to cluster just excluded when not in view.

Plans and Limits

Use of drop down menu listing documents from EGeoXml is currently not implmented.
Additional limitation : sidebar sorting and subfolder structure in the kml are incompatible

A few known user links:

MicroImages
Wine Questers - picnic and wineries
GPS Brianza KML uploader Demo
Use with Geocacheing
Weather maps of India
Mason County Road Closures
Kirchenbezirk Freudenstadt
Unknown in China
Unknown 2


---

More Links

• TNTmap puts WMS on your Google Maps pages
• The Rest of Lances Pages
• Mikes tutorial page
• Marks PolyEncoder page