[Imports] [Cat2Osm2] Tool for exporting Spanish Cadastre data in OSM suitable format

[Rafael Avila Coya]

Hi, all:

I'll also give my opinion, but bear in mind that I arrived to this
importing initiative after it was discussed in the imports list for the
previous version of cat2osm, so any reference to that part of the
discussion will be based only in what it was discussed afterwards in the
talk-es list.

On 17/01/13 11:40, Cruz Enrique Borges Hernandez wrote:
> Thanks for the comments. I will answer below:
> 
>> - not taking in account building levels
> 
> 
> 
>     I think this information is quite interesting (for making 3D Models),
>     in other regions people are investing a lot of work to survey these
>     (and to split the buildings accordingly). Strange you decided to not
>     use this information. Maybe it wasn't precise or current enough?

Me too, I think this is a very valuable information that we should never
reject. In fact, it is already being used by some projects, like
http://osm-3d.org .

Due to the concerns in the imports list about the complexity of the
relations created with the old cat2osm, I (and maybe other people, I
don't remember well) suggested to change the relations to just ways
(although I'd strongly prefer relations), but to keep the data of the
size (levels) of the different parts of a building. IMHO, although the
new cat2osm2 let the mappers choose whether to upload or not this
information, it should be encouraged to keep it, and better to be 3D=yes
by default.

> 
> 
>     > - create the union for all rural areas which share the same tags
> 
> 
>     tracing atomic areas is also something we are doing in some regions
>     manually. IMHO you are destroying a lot of interesting information by
>     unifying these. The actual landuse is much less interesting than the
>     size and layout of the areas/plots. Its the layout that tells the
>     structure, and often also history, of the rural areas. Wouldn't do
>     this.

That was another matter with lots of opinions, but most of them (again
if my memory is ok) were against this move. Among them it was my
opinion: not keeping the separation between parcels would mean we would
loose the possibility of adding tags like barrier=wall or fence for the
lines dividing them, something that is truly a big loss in the NW of
Spain (that is the area where I leave), but probably very important in
other areas of the country as well.

> 
> 
> I will answer these two point at the same time:
> 
> The tool can import these data too, but the last time we discuss here
> there were LOTS of opinions against these. We agree with you, and
> internally we are using that information but from our point of view it a
> decision that the local mappers must take. In [1] there is the same same
> town but with building 3D data and rural parcels. In this case you will
> not notice much differences as this is a very small rural twon where the
> buildings have normally one level. In [2] and [3] you can see Cadiz [4]
> a big capital from the south of Spain with [3] and witout [2] the 3D
> information.
> 
> In fact we can also have the all the historical changes but we do not
> know how to code this information without completely screwing the actual
> data. I am not sure about the acuracy of data previous to 2000 but we
> can extract it. Exists any propousal in this direction?
>  
> 
>     > - pass building tags to parcels and remove the building when their
>     > geometries are the same
> 
> 
>     I guess you wanted to say: "remove the parcel"?
> 
> 
> In this case it does not matter what you have deleted because they sahre
> the same geometry and tags :P
>  
> 
> 
>     cheers,
>     Martin
> 
> 
> [1] http://paginaspersonales.deusto.es/cruz.borges/AldeasecaDeAlba3D.zip
> [2] http://paginaspersonales.deusto.es/cruz.borges/Cadiz.zip
> [3] http://paginaspersonales.deusto.es/cruz.borges/Cadiz3D.zip
> [4] http://en.wikipedia.org/wiki/Cadiz
> 
> -- 
> Cruz Enrique Borges Hernández
> Email: cruz.borges at deusto.es <mailto:cruz.borges at deusto.es>
> 
> DeustoTech Energy
> Telefono: 944139000 ext.2052
> Avda. Universidades, 24
> 48007 Bilbao, Spain
> 
> 
> _______________________________________________
> Imports mailing list
> Imports at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/imports
> 

-- 
--------------------------------

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