Changeset: 106239947
Aligned nodes with imagery; Added residential areas
Closed by Computron
Tags
created_by | JOSM/1.5 (17919 en) |
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source | Esri World Imagery (Clarity) Beta |
Discussion
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Comment from keithonearth
Are these traces based on the Esri Imagery, as the changeset tags state? It contains many details that are not visible in the imagery, so it seems that there is more going on here.
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Comment from Computron
Yes, I used the Esri Clarity imagery. It is several years old, but within Vancouver it is registered to within cm compared to the City of Vancouver's survey data. I frequent this area on foot, so I knew the current state of the land.
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Comment from keithonearth
When I say that there are many details not included in the imagery I mean things like this:
https://www.openstreetmap.org/way/953633823 or https://www.openstreetmap.org/way/953633828There plenty of small details that do not correspond to anything in the imagery. The landuse traces you deleted followed the road edge, these seem to be trying to follow the private plots of land, but you can't get that from the imagery.
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Comment from Computron
I think I understand what you mean now. Yes, the landuse traces I uploaded do follow the private plots of land because the other land is reserved for the city. This level of detail is not visible in aerial imagery but is visible if one was to inspect the survey markers in the ground which bound each lot. The city could install or remove streets, sidewalks, bike lanes, etc., up to but not further than the private parcel boundary. Therefore, the land reserved for the city does not have a residential land use.
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Comment from keithonearth
You've not really answered my question about the source of your info about the private parcel boundaries. Is it the Esri Clarity imagery? I also walk in the area frequently and do not see these details on the ground.
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Comment from keithonearth
Sorry, but it really does not make sense to me, to use the land parcels for the landuse traces, w/o reliable data on what the land parcels actually are. Satellite imagery is just insufficient to determine land parcels.
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