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Changeset When Comment
168508161 6 months ago

Which fields are of concern and what volume is of concern?

I'm aware of Australian weather radar information being located currently in OSM (before any changes I have made), the BOM website, WMO Weather Radar Database, and ACMA RRL database. For many fields, the same information exists in multiple sources. For example, the WMO Weather Radar Database and ACMA RRL databases both share information about the frequency, power output, elevation and antenna. All four sources share some rough (not always the same) coordinates, which are not kept anyway. They also all provide a name which generally differs between source. If anything, the ability to retrieve/consolidate fields from multiple sources indicates to me a better approach may be to keep such information in Wikidata (most radars I think have a Wikidata item someplace) and remove the detailed fields from OSM to avoid duplication. Wikidata has the benefit of allowing 4 names to be listed (and one chosen as preferred), with all 4 names referenced to one of the 4 different sources.

Other fields are mostly just standard OSM fields that would get added to any weather radar such as `monitoring:weather=yes`.

168508161 6 months ago

To clarify--seemingly 95%+ of weather radars in Australia are already existing in OSM. It's mostly just a small number of extra tags such as the frequency of the radar which are absent.

168508161 6 months ago

Also--this is not a mass import. Just Australian sites being added one by one, being modified and checked by manual human review.

168508161 6 months ago

Tags/additions are based on BOM radar information pages _and_ WMO weather radar database data for approximate location, and traced satellite imagery for accurate location.

A small number of other fields (such as frequency and antenna configuration) are solely from the WMO weather radar database which is where BOM publish such data to, and seemingly not available anywhere else. This is factual data (essentially from a single primary source who could supply such data). Factual data cannot be copyrighted in Australia, and LWG have also generally decided in https://osmfoundation.org/wiki/Licensing_Working_Group/Minutes/2023-08-14#Ticket#2023081110000064_%E2%80%94_First_party_websites_as_sources that it is fine to import factual data such as opening hours into OSM due to its factual basis and inability to be copyrighted.

158969295 about 1 year ago

Thank you!

68319371 almost 7 years ago

Thanks, looks reasonable. The point I added was sourced from a Geoscience Australia dataset on data.gov.au and this is not necessarily the most accurate data at times.

61719524 over 7 years ago

In that case I extended an existing line with "fixme" tags, or joined together multiple line segments where one had a "fixme" tag. I don't add voltages, operators, etc unless I can provide a source/reference for that information.

61354214 over 7 years ago

I completed and merged a large number of small ways (power line segments) into one single long, completed way. Therefore ways which have been merged into a larger way will be deleted by the software (JOSM in this case).

26640633 over 7 years ago

I just compared, and the current cliff lines in OpenStreetMap are very poor compared to the LPI Base Map. I'd say all the cliffs could be changed automatically--just delete the existing ones and replace with accurate LPI cliffs.

26640633 over 7 years ago

If I recall correctly, the tracks I added in this changeset were traced from satellite imagery. So you are right that some twists and turns were probably hidden under trees in the satellite data. Feel free to change that to LPI data. I would suggest however checking the changes against Digital Globe premium imagery too, just for extra validation that the LPI data is accurate.

31404526 almost 9 years ago

My source was the NSW government map: http://maps.six.nsw.gov.au/ which shows the falls as being further upstream. I haven't been there in person though as you have, and don't have GPS tracks, so cannot confirm the map is correct. Have you been along the section further upstream of Clover Falls (i.e. just below Macquarie Falls)? Are there any other significant drops in that section?

If you know the section upstream of Clover Falls doesn't have other drops, I suggest going ahead and removing my placement of Clover Falls, and replacing it with yours. One thing that would need to be checked though is the point on Macquarie Rivulet where the stream from McAndrew Falls joins in. http://maps.six.nsw.gov.au/ indicates that it joins in somewhere just below Clover Falls. However based on your survey, it seems that the stream may actually join in above Clover Falls?