Changeset: 38259486
More fixes to the boundaries of Nundle SF
Closed by TheSwavu
Tags
created_by | JOSM/1.5 (9979 en_AU) |
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source | LPI Base Map |
Discussion
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Comment from Warin61
The following nodes do not appear on the LPI Base amp;
4094553049
4094553050
4094553051
4094553086
4094553087
4094553088
4094553189These have all been put on way Way: 387068735 that I originally added. I am concerned as to how many other ways you may have similarly added/modified data that may now be incorrect.
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Comment from TheSwavu
That's because when I updated the boundaries using the data from NSW LPI I used the replace geometry tool in JOSM. That way the history of what happened gets preserved. If you check the boundaries of Nundle SF are still correctly aligned.
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Comment from Warin61
Humm yes correctly aligned to the "LPI admin boundaries - state forests" but not shown on the LPI Base Map .. so the source is wrong and means it cannot be verified using the sated source.
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Comment from TheSwavu
State forests are the dark green areas with the faint grey lines around them labelled with the name such-and-such S.F. Alternatively they are available by downloading from the REST service.
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Comment from Warin61
1) This boundary is between 2 state forests - so the colour is the same for both sides on the LPI Base Map
2) there is no faint grey or any other coloured line here on the LPI Base Map.
Therefore the source in not the LPI Base Map. -
Comment from TheSwavu
Have a closer look they are there:
https://maps.six.nsw.gov.au/arcgis/rest/services/public/NSW_Base_Map/MapServer/tile/16/38806/60303
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Comment from Warin61
Visible there .. but not the same location.
At the given locations ... not visible!https://maps.six.nsw.gov.au/arcgis/rest/services/public/NSW_Base_Map/MapServer/tile/18/155240/241315
Not visible!
https://maps.six.nsw.gov.au/arcgis/rest/services/public/NSW_Base_Map/MapServer/tile/18/155255/241307
Not visible!
Have a look at the actual locations given ... not on the LPI base map ...
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Comment from TheSwavu
Yeap, that's because they are rendered before the stream. As I said earlier if you can't see the boundaries clearly on the map you should use the REST interface to extract them or use the WMS service. The NSW LPI has helpfully exposed some of the layers so they can be downloaded but most of the base map features are only available in the rendered view.
In fact if you want to validate the boundaries I'd recommend using QGIS as it has functionality to download the OSM data and the NSW LPI data and you can then subtract one from the other to produce a difference (remembering to apply the correct simplification to the NSW LPI data first otherwise what you will get is the tiny slivers between the two).
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Comment from Warin61
You clearly have not looked.
The stream there is not the boundary.Go on ... look at these nodes ... !
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Comment from TheSwavu
Hmm.. that's an interesting rendering anomaly you've found there. I've popped off an email to NSW LPI asking what the problem is.
Luckily if you want to validate state forest boundaries then this is one of the base map layers that has been exposed as a REST service so you can download the data directly (and if you are going to do more than a couple of these then that's the way I'd recommend that you go).
PS: Glad you're so keen to do the import validation. I wasn't really looking forward to doing it. I was hoping to come up some way of doing it externally but I haven't figured out how yet.
Ways (16)
- 407408894, v1
- 407408895, v1
- 407408896, v1
- 407408897, v1
- 407408898, v1
- 407408899, v1
- 407408900, v1
- 407408901, v1
- 387068735, v2
- 387068757, v3
- 387068760, v2
- 387213437, v2
- 404484453, v3
- 404485621, v3
- 407405565, v2
- Terrible Billy State Forest (386708435), v3
Relations (5)
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