[OSM-talk-be] CRAB Import Tool

Tue Oct 15 03:54:26 UTC 2013

I thought the consensus from an earlier discussion here was

1) addr:housenumber + addr:street on building (not as node)
2) for those that want to do it: associatedStreet relation with name,
postalcode, city

That's the way I'm doing it since then.

After the meeting in Lier in February I wrote a script that converts the
waypoint files that I make with my GPS into an osm-file. It looks a lot
like the one you can download now  with AGIV/Crab data

My experience with starting from that coverted waypoint file and ending up
with 1 & 2 above:
(Using JOSM, + you need building plugin & utilstool2 plugin & terrace tool)

1. there is no building in osm, it's a single house. You can use the
building tool with the right configuration.
2. no building, semi-detached house (tweewoonst). Building tool works for
first half. Some more work (I can explain in a session) for the second half
3. no building, terrace (rijhuizen). Could be done with e.g. terrace tool
without housenumbers and then merging the data. Using the terrace tool
without the imported data makes much more sense here (goes a lot faster)

4. There is an outline, even the individual houses. Merge each outline with
the correct housenumber
5. There is an outline (typical not a nice rectangle) for all houses in the
terrace. First split, then merge as in 4
6. There is a multipolygon (e.g. for "huizenblok" in cities). I suggest
dropping the multipolygon and to start drawing the individual houses with
1-3

Overall it's a slow job, requiring a lot of steps. In the end I went back
to the terracer and address interpolation tools (to generate individual
housenumbers), because that seems to go faster.

Don't forget that the building outlines are often not very detailed (based
on Bing or 3D shapes), so they might require tweaking as well.

And what about POIs ? I recommend to add addr:street and addr:housenumber
to them as well, but keep them as individual points within the building
outline. I see this approach also on other mailing lists. The main reason
is that the building and the POI do not share other properties than the
address. I repeat the address data, because there is no tool that assigns
the address from the building to the POIs inside it. I don't expect to see
support, as many countries do not assign the housenumber to the building.

@Kurt, during my surveys I found already quite some houses that are not in
the AGIV/Crab database. Others have reported similar issues. We were aware
of this when we got the data. Someone (a "Ben " I thought) mentioned that
the cities are now responsible for updating the data. The list of cities
that committed to this is short. (10 or so). The others are still working
on this. The GIS responsible got in touch with Gilbert because she is doing
exactly the same thing: tracing buildings form aerial images and assigning
tags.

@Peter: welcome and thanks for your interest. If you wish we could setup a
google hangout this Friday to get you more familiar with JOSM and the tools
I mention above. We could do this even without the data from Crab. I still
have some survey data that I can use as an example. It could be in Dutch or
English.

regards

m

On Tue, Oct 15, 2013 at 1:08 AM, Jo <winfixit at gmail.com> wrote:

> side note: I prefer to put the source tags (AGIV;CRAB) on the changeset
> instead of on each and every separate object we're adding.
>
> I'm sorry about adding Herentalsesteenweg. I should have read the message
> before trying to click through to test it... Anyway, it's properly
> attributed and it's mostly manual labour anyway. It's far less automated
> than the UrbIS integration, as we still have to draw the building outlines
> ourselves.
>
> I had to create the associatedStreet relation myself. Was that intentional?
>
> Polyglot
>
>
> 2013/10/15 Jo <winfixit at gmail.com>
>
>> This works quite well in combination with the building tools plugin.
>> Switch on: use address nodes under buildings. Then use x to extrude to get
>> the shape of the building right.
>>
>> A hangout to demonstrate this would be a good idea. I think the street
>> name is missing. I prefer to add information about postcode, village and
>> country through associatedStreet relations.
>>
>> Jo
>>
>>
>>
>>
>> 2013/10/14 Kurt Roeckx <kurt at roeckx.be>
>>
>>> On Mon, Oct 14, 2013 at 01:31:02PM -0700, Ben Laenen wrote:
>>> >
>>> > I'd add them, our administrative borders aren't all very accurate and
>>> it's not
>>> > like they always have a single postal code in every boundary, see
>>> Antwerp for
>>> > example.
>>>
>>> That just looks like a good reason to properly map those
>>> administrative borders to me.  But I guess it's currently not easy
>>> to see what the CRAB data says which postal code it belongs to if
>>> we don't see it anywhere.  If we do add it, I suggest only in the
>>> assosiatedStreet relation.
>>>
>>> As far as I know there really shouldn't be a problem adding
>>> boundary=postal_code relations for places like Antwerpen.
>>>
>>>
>>> Kurt
>>>
>>>
>>> _______________________________________________
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>>>
>>
>>
>
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