[Talk-ca] Importing buildings in Canada

[john whelan]

I think we are on the right track.

I seem to recall some building mapping was done in mapathons with iD in
Calary as part of Geoweek?  Pierre made some comments about the data
quality.

Hopefully we can move forward and get some buildings in before someone
starts organising iD mapathons once more.

Cheerio John

On Sat, Jan 18, 2020, 5:25 PM Daniel @jfd553, <jfd553 at hotmail.com> wrote:

> Bonjour groupe,
>
> Here is a sequential summary of the last exchanges. I inserted some
> comments […] within these exchanges description and summarize what I
> understand from it at the end.
>
> *Nate* asked not to confuse the process of importing new data with that
> of updating/modifying existing OSM data in order to keep things simple for
> this import.
>
> *Daniel* (I) responded that importing new data and updating/modifying
> existing ones at the same time (when necessary) is not unusual in OSM [*and
> would be more efficient*].
>
> *John* replied that importing new data and updating/modify existing data
> when required worked quite nicely when importing Ottawa.
>
> *Nate *explained he believes that the buildings will not be compared
> manually since there are hundreds of thousands of them in OSM for Toronto
> alone. In other words, he thinks there will be automated edits, and these
> edits are not governed by the same policies as imports. [*This is an
> important consideration. What has happened in Ottawa and Toronto so far?
> Have automatic processes been used?*]
>
> *Tim* replied that in most cases it might be appropriate to replace OSM
> data, as he believes [*as I do for most of the cases*] that the ODB
> footprints will be more accurate than existing buildings. However he
> considers it is a case-by-case decision [*then no automation process
> should be used*].
>
> *John* couldn’t resist digressing toward the “Microsoft buildings import”
> but had to bring back the discussion on ODB import after reactions from
> *Tim* and *Pierre* (LOL).
>
>
>
> I think that, somehow, we could all agree on how the import should be done:
>
> -          Align images on ODB, unless evidence ODB data are ill located.
>
> -          Align existing OSM content with the image, *only* if necessary
> after aligning the image with ODB.
>
> -          Import non-existent buildings in OSM.
>
> -          Conflate ODB and OSM buildings, *only* if necessary.
>
> -
>
> To address Nate’s legitimate concerns, we could agree that there will be
> *no* automatic changes/conflation of existing buildings. Having a local
> import manager and by using the task manager, we should be able to ensure
> that there will be no unauthorized import (i.e. not responding to the
> above).
>
> Am I too optimistic?
>
> Daniel
>
>
>
>
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