OpenLR™ - Newsletter
The OpenLR™ newsletter informs about news, changes and the latest updates. The subscription to
the newsletter is free.
Earlier newsletters are listed below:
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Dear OpenLR followers,
the OpenLR software implementation has been released in version 1.1.0
today, February 1st. Furthermore the OpenLR whitepaper has been updated
to version 1.2 and a new tool "MapViewer" has been published.
The new OpenLR reference implementation is now able to generate and read
location references in an XML format, which is supported next to the
well-known binary format. Users can now choose between these two
physical encodings for OpenLR.
The whitepaper has been aligned with the reference implementation and describes
the new XML format in detail. The example given in the whitepaper has been
updated and shows the location reference also in the XML format.
The new tool "MapViewer" can visualize a map based on the OpenLR map interface.
The user is able to do basic map operations like zooming and moving. It is also
very easy to select a line location within the map and encode it. Encoded location
references can also be decoded and visualized in the map.
Tele Atlas also updated the map implementation to the new OpenLR version and
they provide a map loader implementation being used to view the Tele Atlas
test map in the MapViewer tool.
The OpenLR team
-
Dear OpenLR followers,
the OpenLR white paper has been updated. The version 1.1 includes
the errata list from the previous version and also the following
list of changes:
- Note added for physical format version number (section 4.5.1)
- Section 3.4, Rule-4: U-turn nodes are also valid nodes;
invalid nodes might be chosen exceptionally if no other possibility exists
- Encoding steps, Step 1: turn restrictions are optional (section 7.1)
- Encoding steps, Step 9: explanation how to deal with lines longer
than 15km (section 7.1)
- Decoding steps, Step 3: find candidate lines directly if no candidate nodes
can be found (section 8.1)
- Decoding steps, Step 4: LRP attributes may vary between encoder and decoder
map so that values don't need to match exactly (section 8.1)
- Decoding steps, Step 5: explanation how to deal with a situation where start
and end line are equal; retrying other candidate line pairs if no valid
shortest-path can be determined (section 8.1)
- Explanation added for handling of prohibited turns in decoding
example (section 9.2)
The OpenLR team
-
The OpenLR team announces that the utility tool "OpenLR Binary Data Viewer" has been
launched today, November 23, 2009.
The "OpenLR Binary Data Viewer" is able to look into binary location references and
to generate a human-readable version of the binary information. The tool can
read binary location references as well as Base64-encoded location references
and the output format can be customized by the user.
The tool is licensed under an extended version of the GPLv2 and can be
downloaded at http://www.openlr.org/tools.html.
-
Dear OpenLR followers,
OpenLR, the open, compact and royalty-free dynamic location referencing has
launched its Open Source project site today, November 9, 2009.
At http://www.openlr.org you can find the open source
reference implementation of the OpenLR method and a lot of downloadable
material to learn about OpenLR. Documentation includes a technical white paper
and an introductive presentation. Tele Atlas B.V. also provides free map
samples and examples so that you are able to immediately test OpenLR on your own.
The open source software is made available both as a normal download and - if you
are using Maven as your software management tool - as directly accessible & always
latest packages from our server. Additionally the web site offers an issue tracker
where you can report and track issues with the software. This is complemented
further by a forum where all topics around location referencing in general and
OpenLR in particular can be discussed.
We would like to invite you to visit the Open Source project at http://www.openlr.org
and to contribute to OpenLR in order to make it an open, validated and successful
dynamic location referencing method.
