[OSM-talk-be] GRB hackday december 11th

[Marc Gemis]

On Wed, Dec 14, 2016 at 8:49 AM, joost schouppe
<joost.schouppe at gmail.com> wrote:
> Expect between 10 and 20 users for the import tool. I think we can handle a
> little ugliness.
> So something "not too bad" will do :)
>
> That said, if it all goes as planned, we will be doing a "model import". So
> I think the work on

A model import of this size and data quality with only 10-20 users ?
You must be kidding :-)
Without involvement of really local mappers (1 per village), it is
IMHO impossible to bring the GRB data up to  level that is needed for
a "model import".

As you might know, everything with an address is categorized as house,
everything without as shed.  While this is a choice that Glenn made,
there are only 2 categories you can start from. There are also roofs
and some buildings are known as industrial (substations for
electricity), but that does not help with the issue.

So even churches are marked as shed. While this type of correction is
easy, it might easily be skipped (see Urbis import). However, try to
recognize apartments, retail vs. commercial, warehouse vs. industrial,
shed vs. garage (next to house), civic, barns vs. stables vs
farm_auxilairy etc. buildings based on aerial imagery.

Unless many, many more mappers get involved in the process, this will
not be a model import in my eyes, simply because too many buildings
that are not house/shed will be mapped as such.

BTW, this has nothing to do with the import tool, which even in it's
current version is good to support local mappers. The main benefit is
that you do not have to draw the buildings yourself or add the
addresses. That's already done, changing the building type based on
ones observations is easy.

So I really hope that the people involved in the import realize that
improving the data before uploading is much more important that having
an exact copy of GRB data in OSM.

regards

m