[Imports] Fwd: Import os waterways in São Paulo, Brazil

[Vitor George]

Hola Rafael,

Thanks for your comments.

I'm interested in importing *rios.shp* file. There is a important community
of people interested in mapping underground waterways, as they were mostly
buried to give space to cars. I'm in contact with this community, so we
would have help to refine data after the import.

The correct SRID for the file is 4618 (SAD 69), not the one save in .prj.

The import would not occur automatically, as we would need to connect the
waterstreams to the major rivers, which remain untouched.

It seems that the proper tagging would be waterway=ditch+tunnel=yes as they
are mostly underground man-made channels. If there is something that seems
natural and above surface, waterway=stream. Do I need to put level=* to
every road crossing if I put tunnel=yes?

Someone suggested using ogr2osm to allow editing in JOSM, which I'll test.

I'll expand wiki documentation as I advance.

Obrigado,
Vitor





On Thu, Jul 17, 2014 at 2:03 PM, Rafael Avila Coya <ravilacoya at gmail.com>
wrote:

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> Olá, Vitor:
>
> Some questions:
>
> Are you going to use any specific software for the import?
>
> I've opened the rios.shp and hidrografiaInter.shp files, and many
> waterways lack any tag, while some have the name. What will be the
> tagging schema, for instance to differenciate rivers, streams and
> river basins? You should also document the rest of the tags you
> propose, like the source tags, and when waterways go underground, for
> example.
>
> Waterways from the dataset aren't adjusted to the objects of the OSM
> database. How will you adjust this offset? (it's sometimes 40-50
> meters compared against Bing imagery, for example).
>
> How will be the import process itself? As for what I see from the
> data, I think it can't be imported automatically. So how will be the
> detailed workflow of it, and how will you solve the different issues?
> Very important here will be how you propose to merge that data with
> the existing objects in the OSM database, not only with the water
> related ones (like Rio Tieté river basin), but also when the river
> goes under roads/streets that haven't been tagged with the
> bridge+layer tags yet.
>
> You should also clearly document the changeset tagging for the import,
> and the reverse plan, in case something goes wrong.
>
> Obrigado,
>
> Rafael Ávila Coya.
>
> On 17/07/14 18:05, Vitor George wrote:
> > Hi,
> >
> > The Prefecture of São Paulo made a statement about datasets
> > available at their website:
> >
> > " /All files are available for download and can be freely
> > consulted, processed, reused, redistributed, without restrictions
> > of license, patents or control mechanisms, only by giving proper
> > attribution."/ / / We are going to start importing a dataset of
> > waterways within the city. I've already publicize at local mailing
> > list and created the wiki page:/ / / /
> > https://wiki.openstreetmap.org/wiki/PMAPSP_Import
> >
> > Obrigado, Vitor
> >
> >
> >
> >
> > _______________________________________________ Imports mailing
> > list Imports at openstreetmap.org
> > https://lists.openstreetmap.org/listinfo/imports
> >
>
> - --
> Twitter: http://twitter.com/ravilacoya
>
> - --------------------------------
>
> Por favor, non me envíe documentos con extensións .doc, .docx, .xls,
> .xlsx, .ppt, .pptx, aínda podendoo facer,  non os abro.
>
> Atendendo á lexislación vixente, empregue formatos estándares e abertos.
>
> http://es.wikipedia.org/wiki/OpenDocument#Tipos_de_ficheros
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