Author: castagna.lists
Description:
The Semantic Maps extension does not export geo coordinates in RDF.
For example, here is Berlin with geo coordinates (i.e. it has an "has coordinates" property): http://mapping.referata.com/wiki/Berlin
There are no coordinates in the RDF export http://mapping.referata.com/wiki/Special:ExportRDF/Berlin
Version: unspecified
Severity: normal
| Title | Reference | Author | Source Branch | Dest Branch | |
|---|---|---|---|---|---|
| Draft: early draft of a comparison analysis | repos/search-platform/notebooks!1 | dcausse | T355040_sholarly_articles_split_results_comparison_analysis | main |
castagna.lists wrote:
Source code to look at is probably here: http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/SemanticMediaWiki/includes/export/
c_b_dvs wrote:
I just ran into the same problem, was able to fix it by modifying the getDataItemExpElement function SMW_Exporter.php from this:
case SMWDataItem::TYPE_GEO:
/// TODO return null;
to this:
case SMWDataItem::TYPE_GEO:
$lit = new SMWExpLiteral( $dataItem->getSerialization(), 'http://www.w3.org/2001/XMLSchema#string', $dataItem ); return $lit;
Thanks for the patch Chris - I've submitted it here https://gerrit.wikimedia.org/r/#/c/22045/
Paolo: thanks for reporting
c_b_dvs wrote:
I assume that it doesn't work with the latest version of SMW and Semantic Maps from github? Is there a recommended configuration to verify that it's still broken?
For background, I find that the RDF export of coordinates works with Semantic MediaWiki 1.5.6 and Semantic Maps 0.7.6.1 (http://enipedia.tudelft.nl/wiki/Special:Version), but then something broke in between that version and Semantic MediaWiki 1.7.1 and Semantic Maps 1.0 (http://enipedia.tudelft.nl/enipediaTesting/index.php/Special:Version). This is the one that I had to patch. At least with this specific setup, I can verify that it works due to property:Point showing up on http://enipedia.tudelft.nl/enipediaTesting/index.php/Special:ExportRDF/Navajo_Powerplant
The patch needs further improvements before we can accept it. See https://gerrit.wikimedia.org/r/#/c/22045/
The Semantic MediaWiki developers requested in https://phabricator.wikimedia.org/T64114 to move their task tracking to https://github.com/SemanticMediaWiki and to close remaining tasks in Wikimedia Phabricator. If you still face the problem reported in this task in a supported version of SMW, please feel free to transfer your report to https://github.com/SemanticMediaWiki/SemanticMaps/issues . We are sorry for the inconvenience.