User:Nakaner/Deleting Cycle Routes from LGLN

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This page is the documentation of a mechanical edit which removes lots of lcn=yes and rcn=yes in Lower Saxony, Germany. For the German documentation and discussion see its thread at the German OSM Forum and Talk-de mailing list.

History

User Halbmond added lots of cycle route relations (which were more collective relations than route relations) in Eastern Friesland in February and March 2014. These relations have been imported from an official 1:75,000 cycle map published by LGLN (surveying authority of Lower Saxony). He had the permission to do so by the copyright holder but did not seek for the permission from OSM community.

His edits have been discovered and mentioned at German forum. These cycle routes have been deleted by Nakaner-repair in April 2016.

Linnie and morla added cycle routes from the same data source in Lower Saxony in March and April 2014 but they used lcn=yes and rcn=yes. See the discussion about it at the German forum.

The cycle networks created by these three users lack the quality which is expected by the German OSM community. They run through gated areas (e.g. harbours), run over roads with motorroad=yes and over tracks with tracktype=grade4/grade5. The data is out of date and LGLN is not able to say what the real datasource was.


Proposed Edits

Step 1

This step is a manual edit but belongs to this mechanical edit and therefore mentioned here:

I will review all ways which are returned by following Overpass API query:

[out:xml];
(way[lcn=yes]({{bbox}}); way[rcn=yes]({{bbox}});)->.lcnways;
(.lcnways; - way.lcnways(user:Linnie);)->.lcnways; // drop Linnie's ways
(.lcnways; - way.lcnways(user:morla);); // drop morla's Ways
out meta;
>;
out meta;

These ways have been edited by other users after the import or have been created by splitting a way. I will have a look at these ways and neighbouring ways. In case of doubt, I will not hesitate to ask the mapper (!= Linnie/morla) if I am not sure.


Step 2

This is a mechanical edit. I will delete all lcn=yes and rcn=yes from the result of following Overpass API query using JOSM.

[out:xml];
(
way[lcn=yes][source="WMS-Freizeitinfo-Dienst LGLN"]({{bbox}})(user:morla);
way[rcn=yes][source="WMS-Freizeitinfo-Dienst LGLN"]({{bbox}})(user:morla);
way[lcn=yes][source="WMS-Freizeitinfo-Dienst LGLN"]({{bbox}})(user:Linnie);
way[rcn=yes][source="WMS-Freizeitinfo-Dienst LGLN"]({{bbox}})(user:Linnie);
);
out meta;
>;
out meta;

Linnie and morla added source=WMS-Freizeitinfo-Dienst LGLN during their edits. I assume that this tag has not been used by other mappers. If Linnie and morla forgot to add source=WMS-Freizeitinfo-Dienst LGLN, lcn=yes and {{Tag|rcn||yes} will be deleted manually in step 3.

Step 3

This step is a check after the mechanical edit.

[out:xml];
(way[lcn=yes]({{bbox}}); way[rcn=yes]({{bbox}});)->.lcnways;
out meta;
>;
out meta;

I will handle the result of this query as described at "Step 1".

Statistics

to be added