[Imports] [Talk-ca] Ongoing Canadian building import needs to be stopped, possibly reverted

john whelan jwhelan0112 at gmail.com
Fri Jan 18 20:00:11 UTC 2019


Could you update the wiki to include these instructions please.

Thanks John

On Fri, 18 Jan 2019 at 14:53, Yaro Shkvorets <shkvorets at gmail.com> wrote:

> John,
> >> Traditionally or the party line is if its been mapped already then to
> preserve the history you either leave it alone or manually correct it.
> Manually correcting it is very time consuming.  Often the decision is made
> to leave the existing way in the map.
>
> JOSM offers very convenient way to do it called "Replace geometry". Select
> both ways, old and new, press Ctrl-Shift-G, merge any conflicting tags and
> you preserve the history, tags and have new improved outline in a couple of
> clicks.
>
> On Fri, Jan 18, 2019 at 2:30 PM john whelan <jwhelan0112 at gmail.com> wrote:
>
>> And that is a problem with imports.  Traditionally or the party line is
>> if its been mapped already then to preserve the history you either leave it
>> alone or manually correct it.  Manually correcting it is very time
>> consuming.  Often the decision is made to leave the existing way in the map.
>>
>> I'm not going to say one method is correct over the other but the least
>> contentious is to add only things are are not there already.
>>
>> Cheerio John
>>
>> On Fri, 18 Jan 2019 at 14:17, Yaro Shkvorets <shkvorets at gmail.com> wrote:
>>
>>> Nate,
>>> I'll change the project name to reflect that the import is on hold. As a
>>> local mapper, if you want to take a lead on the Toronto import that'd be
>>> great.
>>> I did review some of DannyMcD's edits last night
>>> (Mississauga-Brampton-Vaughan) and to be honest was rather disappointed
>>> with the quality. It appears Danny chose to import only new buildings (i.e.
>>> residential homes mostly), leaving most of the existing hand-traced
>>> non-residential building outlines in OSM untouched. That's unfortunate, the
>>> dataset offers some really good data and leaving half of it behind makes it
>>> more difficult to revisit in the future.
>>> In my edits (Markham-Scarborough-East York) I was aiming to replace as
>>> many existing geometries with outlines from the import as possible. I think
>>> that's what we should be trying to do going forward.
>>> Looking forward to your comments and discussion.
>>>
>>>
>>>
>>> On Fri, Jan 18, 2019 at 1:07 PM Nate Wessel <bike756 at gmail.com> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I've just joined the talk-ca list, so please accept my apologies for
>>>> not addressing this list earlier. I'm happy to take this thread off the
>>>> imports list for now and onto talk-ca until things are ready to begin
>>>> again. The next person to reply can please feel free to remove that email
>>>> if they agree.
>>>>
>>>> I've just made a note on the draft import plan wiki page noting that
>>>> the import has been stopped:
>>>>
>>>>
>>>> https://wiki.openstreetmap.org/wiki/WikiProject_Canada/Canada_Stats_Canada_Building_Outlines_Import/Plan
>>>>
>>>> I would really appreciate it if the person with admin access to the
>>>> tasking manager projects could please take those offline for the moment, or
>>>> perhaps place them in a validation-only mode if that's possible.
>>>>
>>>> Like I said in my last email, which perhaps didn't make it to the
>>>> talk-ca list (
>>>> https://lists.openstreetmap.org/pipermail/imports/2019-January/005886.html)
>>>> I'm now proposing that we leave the data that has already been imported and
>>>> enter a phase of thorough validation on that data.
>>>>
>>>> My plan, over the next several days, is to do a general survey of the
>>>> quality of the data that has been imported so far and make a list of
>>>> systematic issues I see that should be addressed before we can consider
>>>> moving forward again. I'll add those comments to the conversation in
>>>> talk-ca and on the wiki page (link above), as I feel is appropriate. As I
>>>> said before, I'm of the mind that this import did not get adequate review
>>>> or approval and did not follow all the import guidelines. I think therefore
>>>> we need to take stock, cross the t's, dot the i's, and move this thing back
>>>> toward where it needs to be. Step one is a thoroughly documented wiki page
>>>> outlining the proposal and responding to everything required in the import
>>>> guidelines.
>>>> https://wiki.openstreetmap.org/wiki/Import/Guidelines
>>>>
>>>> I know there are people excited about this import, and people who are
>>>> eager to get back to work bringing buildings in, but I think everyone will
>>>> be happier in the end if we take the time to do this right. We don't need
>>>> to stop forever - we just need to stop until we get things right. I
>>>> sincerely respect the good intentions of everyone involved in this and I
>>>> hope we can all work together to make OSM a map known for it's coverage AND
>>>> it's quality.
>>>>
>>>> Best,
>>>> Nate Wessel
>>>> Jack of all trades, Master of Geography, PhD candidate in Urban Planning
>>>> NateWessel.com <http://natewessel.com>
>>>>
>>>> On 1/17/19 9:05 PM, OSM Volunteer stevea wrote:
>>>>
>>>> The thread link is:  https://lists.openstreetmap.org/pipermail/imports/2019-January/005878.html
>>>>
>>>> SteveA
>>>>
>>>>
>>>
>>> --
>>> Best Regards,
>>>           Yaro Shkvorets
>>> _______________________________________________
>>> Talk-ca mailing list
>>> Talk-ca at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/talk-ca
>>>
>>
>
> --
> Best Regards,
>           Yaro Shkvorets
>
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