[Talk-nz] Making the LINZ NZ Building Outlines available in RapiD

Mon Apr 5 05:59:57 UTC 2021

Hi Andrew,

I've been participating in Kyle H's address import, and I was considering
what it could look like to use that approach (a custom RapiD instance which
can handle different sorts of conflation) to the buildings import. I've
decided it wouldn't really be necessary as we probably don't need the
degree of accuracy and coverage that the address import requires, for
example conflating LINZ IDs with existing features is out of scope of this
project.

I think that if systematic coordination was desired, Tasking Manager would
be the way to go. It can be configured to launch the RapiD editor, with the
NZ buildings layer ready to go (once it is live). I would probably start on
the scale of a city of even a neighbourhood level, before trying to create
a project for the whole of NZ.
This would look similar to the buildings projects in Australia:
https://tasks.smartcitiestransport.com/projects/1/

Cheers
Tim

On Tue, Feb 2, 2021 at 2:00 PM Andrew Douglas-Clifford <
adouglasclifford at gmail.com> wrote:

> Hi Timothée,
>
> I am very supportive of this proposal.
> I myself have had much the same thoughts, to the point I don't bother
> mapping buildings in New Zealand at all for the very reasons you have
> outlined. However, up to this point, I wasn't sure how we would manage to
> get LINZ buildings incorporated, but the solution outlined here is great -
> the manual review without the manual tracing provides a good balance
> between data accuracy and avoiding any impact on existing building data,
> which is really important for quality OSM imports.
>
> I am keen to help in the effort to use RapiD to import them as well and to
> help in general to coordinate if required. Perhaps the use of Tasking
> Manager or MapRoulette would be a good way to do that?
>
>
> Cheers,
>
> Andrew
> andrew_dc
>
>
> On Tue, Feb 2, 2021 at 12:47 PM Timothée Duhamel <
> timothee.duhamel at gmail.com> wrote:
>
>> Hi everyone,
>>
>> I'm an Auckland based OSM contributor (username CoyKoi), and I've been
>> looking at ways to improve building coverage. Initially I was doing a lot
>> of my own additions through manual tracing, but I've slowed down on that as
>> it feels like unnecessary work, knowing that there are high quality
>> building outline datasets available. Many of you would have been involved
>> in the previous imports of building outlines, which are in various stages
>> of completion, and no longer active. For example, much of Auckland was
>> never completed. I've been following the changes in data and technology
>> available, and I believe there's an opportunity to begin a new building
>> outline import.
>>
>> So I am getting in touch with the NZ-OSM mailing list seeking the
>> community's support to have the LINZ building outline dataset made
>> available on RapiD. I have already made a quick query on the Maptime
>> Oceania slack channel, where I received support. Daniel Silk from LINZ
>> has been instrumental in working with the RapiD team to have the dataset
>> preprocessed, ready for inclusion.
>>
>> Please review the dataset, wiki page and FAQ below and let me know what
>> you think. I look forward to hearing feedback, discussion and hopefully
>> your support to proceed with the project.
>>
>> This is the original* NZ Building Outlines* dataset, on LINZ Data
>> Service: https://data.linz.govt.nz/layer/101290-nz-building-outlines/
>> Here is the dataset processed ready for community review, before being
>> enabled in RapiD:
>> https://www.arcgis.com/home/webmap/viewer.html?useExisting=1&layers=ef9136b079e24bbfb432be9bbdd246ff
>>
>> A *wiki page* for this project has been created,  with plenty of
>> information at
>> https://wiki.openstreetmap.org/wiki/Import/New_Zealand_Buildings
>>
>> *What is RapiD?*
>> RapiD is a special version of the standard iD web editor which offers
>> suggested features to the user. The user can select the features and choose
>> to include them in their changeset. Or they can choose to ignore a feature,
>> for example if they know a building doesn't exist, or would rather draw it
>> themselves. This means that the data is being added with a high degree of
>> oversight, compared to other import processes, and users are restricted to
>> adding only 50 features per changeset. There is also a JOSM plugin
>> available.
>>
>> *How does it work?*
>> I would suggest trying RapiD hands-on, to see how the suggestions work. I
>> have been testing it in Australia, where they have had Microsoft Buildings
>> available in RapiD since October. (I would note that the LINZ building
>> outlines are of higher quality than the Microsoft data available in
>> Australia)
>> Try RapiD here: https://mapwith.ai/rapid
>> Or the JOSM plugin instructions are here:
>> https://josm.openstreetmap.de/wiki/Help/Plugin/MapWithAI
>>
>> *Will this undo all my hard work drawing buildings already on OSM?*
>> *No *- RapiD only suggests features where there is no existing feature
>> already. Areas that are already well mapped will show very few, if any,
>> suggestions.
>>
>> *Is this an import?*
>> This is not a systematic bulk import like previous LINZ data imports, but
>> yes essentially this is enabling users to perform small, manual imports.
>> Having said that, I'm sure that a tasking manager project could be set up
>> to have a more systematic approach to reviewing and importing the data.
>>
>> *Any risks?*
>> The building outlines were generated from imagery up to 8 years old in
>> some areas, so in those places there will be buildings suggested which have
>> since been demolished. Correctly identifying and ignoring these features
>> will depend on users having local knowledge or consulting more recent
>> imagery when manually adding the buildings. Also there are false-positives
>> where caravans, shade sails, canopies have been digitised as buildings -
>> again these could be picked up by the user when manually reviewing the
>> buildings.
>>
>>
>> _______________________________________________
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>> Talk-nz at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/talk-nz
>>
>
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