Support KML 2.3 format to import tracks properly #4083

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opened 2022-12-15 09:49:28 +00:00 by biodranik · 3 comments

biodranik commented

2022-12-15 09:49:28 +00:00

(Migrated from github.com)

OM now supports KML 2.2. KML 2.3 is already supported in some apps like OpenTracks.

Looks like at minimum we need to support Track and Multitrack.
Track points timestamps should also be supported/saved, and then exported (if they're present), to properly support #4067 GPX export. At least the code should keep in mind that option for the next steps.
OpenTracks also saves accuracy and speed as extended data. That can be useful too for the future for different purposes, including traffic info if we support it someday.

The main KML enhancements provided in version 2.3 are:

Addition of a new feature, KML Tour, which enables a user to specify aspects of a controlled virtual flight through a series of geographic locations, including speed, mode of flight (smooth or bounce), sound tracks and how KML features are updated throughout the tour.

Addition of new geometries: Track and MultiTrack. A KML Track can capture and display the path and other aspects of a moving object over a specified period of time.

Enhancements to KML’s Extension Mechanism, allowing for the direct use of XML content from third-party schemas. KML 2.3 is now based on XML Schema 1.1 enabling authors of KML Application Profile extensions to experimentally add foreign element and attribute content interleaved among existing KML elements.

Also see some highlighted changes: http://kml4earth.appspot.com/kmlErrata.html
KML Schema http://schemas.opengis.net/kml/2.3/ogckml23.xsd

OM now supports [KML 2.2](https://developers.google.com/kml/documentation/kmlreference). KML 2.3 is already supported in some apps like OpenTracks. 1. Looks like at minimum we need to support [Track](http://docs.opengeospatial.org/is/12-007r2/12-007r2.html#611) and [Multitrack](http://docs.opengeospatial.org/is/12-007r2/12-007r2.html#638). 2. Track points timestamps should also be supported/saved, and then exported (if they're present), to properly support #4067 GPX export. At least the code should keep in mind that option for the next steps. 3. OpenTracks also saves accuracy and speed as extended data. That can be useful too for the future for different purposes, including traffic info if we support it someday. > The main [KML enhancements](https://www.ogc.org/pressroom/pressreleases/2237) provided in version 2.3 are: > 1. Addition of a new feature, KML Tour, which enables a user to specify aspects of a controlled virtual flight through a series of geographic locations, including speed, mode of flight (smooth or bounce), sound tracks and how KML features are updated throughout the tour. > 2. Addition of new geometries: Track and MultiTrack. A KML Track can capture and display the path and other aspects of a moving object over a specified period of time. > 3. Enhancements to KML’s Extension Mechanism, allowing for the direct use of XML content from third-party schemas. KML 2.3 is now based on XML Schema 1.1 enabling authors of KML Application Profile extensions to experimentally add foreign element and attribute content interleaved among existing KML elements. Also see some highlighted changes: http://kml4earth.appspot.com/kmlErrata.html KML Schema http://schemas.opengis.net/kml/2.3/ogckml23.xsd

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