Hola, Lucía:
Nice! And don't hesitate to come to this list to ask for help!
Saludos,
Rafael.
On 15/12/17 14:35, Lucy Ganchozo Llano wrote:
Thank you very much for all the observations.
Given the fact it is the first time we import buildings in OSM, we will
review all the steps considering your recommendations for a better
procedure.
Regards.
2017-12-13 18:19 GMT-03:00 Rafael Avila Coya <[email protected]
<mailto:[email protected]>>:
Hola, Lucía:
Thank you for submitting this import for review and with the goal of
improving the map of Paraguay :)
First: have you discussed this import with the local Paraguay OSM
community? This is compulsory as per the import guidelines [1].
You say this will be a one time import, but I've spotted more than
1770 buildings already in the area you want to do the import. In the
wiki you say "none" under Conflaction section.
I see that many important buildings all around the import area are
left behind unmapped, while next to them, smaller ones are mapped.
This will lead to an inconsistent and a bit weird map. See this
image [2].
Data quality: Just running the JOSM validator, I can see:
Errors:
1) 657 duplicated nodes and 1 one node ways (that can be fixed with
the JOSM validator)
2) 16 ways containing segment twice (no possible to fix with the
validator).
Warnings:
1) 15 duplicated nodes. Fixable with validator.
2) 9676 overlaping ways. Non fixable with validator. With such a
huge number of ways, you can expect all kind of errors. I've just
checked the first 3, and saw a duplicated building, and two
buildings that overlap over other 2 or 3 buildings.
3) 21 self-crossing ways. Non fixable with validator.
4) 668 self-intersecting ways.
5) 8 nodes without tag and not connected to any object. Fixable with
validator.
Such amount of geometry issues should be solved *before* any attempt
to import this data to OSM, not after.
Tagging: you don't mention specifically that you will delete all
original tags from the original dataset (probably you forgot). In
any case, there might be tags that could be interesting to use if
they give info we could use for OSM. What I mean is that maybe (or
maybe not) NRO_MZ, ZONA, ESTADO or LOTE could be of use if they are
related to real things we can map, like names of administrative
entities for example.
Changeset tags:
I would add:
import=yes
url=https://wiki.openstreetmap.org/wiki/User:Lucyintheskypy
<https://wiki.openstreetmap.org/wiki/User:Lucyintheskypy>
Note that it's more convenient to have the import wiki in a more
general folder, like under Paraguay wiki for example.
Import user: No reference to what user you want to use for this
import. Every import has to be done with an ad-hoc user, not a
standard OSM user.
Note that I don't say this import isn't interesting, just the
contrary. But as it is now, it needs quite a lot of improvement
before we can safely import the data.
As you can see from my comments, some issues can be solved easily,
but others are not. And they are many.
One possibility would be to have a good group of interested people
(very prefered if they are paraguayan) and correct the data by areas
(dividing the data in several parts and giving them to each one).
That would make the import much more reliable, and more
collaborative too.
A year ago I organized one import of several types of objects of
Thimpu city (Kingdom of Bhutan). Among them were building footprints
[3]. Maybe it can give you some extra ideas on how to improve the
preparation of the import.
Un saludo cordial,
Rafael.
[1] Paso 2. Consultas a la comunidad:
http://wiki.openstreetmap.org/wiki/ES:Importaci%C3%B3n/Directrices#Paso_2._Consultas_a_la_Comunidad
<http://wiki.openstreetmap.org/wiki/ES:Importaci%C3%B3n/Directrices#Paso_2._Consultas_a_la_Comunidad>
[2]
https://www.dropbox.com/s/zjgtiyqh0whuuez/lackImportantBuildings.png?dl=0
<https://www.dropbox.com/s/zjgtiyqh0whuuez/lackImportantBuildings.png?dl=0>
[3]
http://wiki.openstreetmap.org/wiki/WikiProject_Bhutan/Thimphu_Thromde_data_building_footprints_import_workflow
<http://wiki.openstreetmap.org/wiki/WikiProject_Bhutan/Thimphu_Thromde_data_building_footprints_import_workflow>
On 13/12/17 21:12, Lucy Ganchozo Llano wrote:
Hello,
I just want to inform that I'm part ofMapPYOSM
<https://www.facebook.com/mappyosm/
<https://www.facebook.com/mappyosm/>>'s team and we're going to
import the buildings from the center of Encarnación, Paraguay.
By mapping in OSM and doing this import job, we aim to solve the
lack of a basic cartography in our country: Paraguay.
The data are under ODbL, they're in shapefile format and was
provided by Ecosistema Urbano, the enterprise hired for the
elaboration of the Plan Encarnación Más.
https://www.dropbox.com/sh/4c6nyk50fljc1w5/AACULmnSEXBL6qDxxYOILYcOa?dl=0
<https://www.dropbox.com/sh/4c6nyk50fljc1w5/AACULmnSEXBL6qDxxYOILYcOa?dl=0>
More details are available here:
https://wiki.openstreetmap.org/wiki/User:Lucyintheskypy
<https://wiki.openstreetmap.org/wiki/User:Lucyintheskypy>
Regards,
Lucia Ganchozo.
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