Re: [Talk-br] Proposal of import: Brazilian Geodetic Network (man_made=survey_points)

[Sérgio V .]

É, tive que fazer uma grande cagada pra descobrirem a falha no sistema.

A relação causou vários problemas.

Com o acréscimo de não ter sido discutida aqui no talk-br.

Mais no telegram. Mesmo assim não suficiente. Teve que ser revertida.

A relação não foi uma boa ideia. Foi removida.

O resto da proposta parece boa.



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

Sérgio - http://www.openstreetmap.org/user/smaprs



De: Alexandre Magno Brito de Medeiros 
Enviado: quinta-feira, 16 de março de 2017 18:44
Para: OpenStreetMap no Brasil
Assunto: Re: [Talk-br] Proposal of import: Brazilian Geodetic Network 
(man_made=survey_points)

Uma "relação monstruosa" de uma importação não discutida no 
Brasil com mais de 32.767 
membros foi grande 
demais para o osm2pgsql, 
o que provavelmente causou problemas em muitos servidores.

Fonte: semanárioOSM 347

2017-03-14 13:22 GMT-03:00 Sérgio V. 
>:

Bom dia pessoal, estou preparando a proposta abaixo para o 
https://lists.openstreetmap.org/pipermail/imports/.

Por favor sintam-se livres para examinar.

Antecipadamente obrigado.

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

Hello.
I'm member of brazilian OSM users community.
I present here for discussion, and asking approval for, the proposal for the 
import of brazilian geodetic network of survey points (SGB - Sistema Geodésico 
Brasileiro).
Firstly, sorry if not good english. Also sorry for the technical problems that 
arose due to the size of elements in previously ill imported relation.

This proposal was previously formally informed in brazilian talk list in 
https://lists.openstreetmap.org/pipermail/talk-br/2017-March/012063.html .
(Also this post here will be copied to brazilian talk list.)

The discussions in Brazilian community: actually started in 6th march in 
Telegram channel of the brazilian community, where it has been carried on, and 
where we generally use to talk most (159 members, around some 80 users 
connecting daily and some 20 activelly communicating). Many members made 
remarks and suggestions about it and, after all arrangements, general aprovals 
for procedures and utility purpose.

The purpose of this proposal: is to import the survey points published by the 
brazilian government agency for geographical data (called IBGE - 
(http://www.ibge.gov.br/home/geociencias/geodesia/default_sgb_int.shtm).

The source data: is all produced and published by IBGE.
The government also publishes these data through the more general portal for 
brazilian spatial data (INDE: 
http://www.visualizador.inde.gov.br - 
Menu: Redes Geodesicas), from where it was dowloaded.

About the licenses for the data: as said in previous exchange of messages of 
other brazilian OSM member with IBGE officials [1], and as stated by the 
brazilian national law for access to information (known as "LAI"), all the 
government data, including IBGE, is free for access, not even requiring to say 
what for it is intended [2] (the exceptions quoted in the law must not even be 
published by the government). IBGE officials explicitly stated, as in previous 
quoted messages, it's free for OSM purposes, for copy, sharing and changes, 
since quoting the source, and not requiring further back communication.

The aim of the import: is to have all these points with their precise 
coordinates provided by the government, placed in OSM brazilian map to help on 
aligning imagery, fixing borders, found places in remote regions, etc.

It can be objected: found no survey point in imagery on the ground.
That's true. Many things pedestrians have mapped can't be seen on sattelite 
imagery now, like door numbers, shop names, highway signals, and many other 
small things, perhaps also fire_hidrants, etc. It usually resides all on local 
mapper's word.
Also imagery resolution is improving constantly, so perhaps not too later we 
all can see many more things on sattelite imagery.
Anyway, the government, through its data itself and its official reports of 
survey points, states they are there on the ground.

As a single example: there's a survey point (a small plate) over a 
boundary_stone in the Brazil-Venezuela-Guyana triple border, reported in [3]. 
It seems not visible in imagery, nor the boundary_stone. At least I still 
haven't found it (but I'm looking for). But just seeing this officialy reported 
point in JOSM (5.2018977222, -60.737554)[4] indicates 
this triple border in OSM is currently more than 1km far from that official 
measurement, thus deserving some revision.

Other general informations:
-All the objects proposed to import came previously converted by IBGE in WGS84 
format in the original downloaded shape file.
-There will be no relation (in OSM peculiar concept 

Re: [Talk-br] Proposal of import: Brazilian Geodetic Network (man_made=survey_points)

[Alexandre Magno Brito de Medeiros]

>
> Uma "relação monstruosa" de uma importação não discutida no Brasil
>  com mais de 32.767
> membros foi grande demais
>  para o osm2pgsql,
> o que provavelmente causou problemas em muitos servidores.


Fonte: semanárioOSM 347 

2017-03-14 13:22 GMT-03:00 Sérgio V. :

> Bom dia pessoal, estou preparando a proposta abaixo para o
> https://lists.openstreetmap.org/pipermail/imports/.
>
> Por favor sintam-se livres para examinar.
>
> Antecipadamente obrigado.
>
> - - - - - - - - - - - - - - - -
>
> Hello.
> I'm member of brazilian OSM users community.
> I present here for discussion, and asking approval for, the proposal for
> the import of brazilian geodetic network of survey points (SGB - Sistema
> Geodésico Brasileiro).
> Firstly, sorry if not good english. Also sorry for the technical problems
> that arose due to the size of elements in previously ill imported relation.
>
> This proposal was previously formally informed in brazilian talk list in
> https://lists.openstreetmap.org/pipermail/talk-br/2017-March/012063.html
>  .
> (Also this post here will be copied to brazilian talk list.)
>
> The discussions in Brazilian community: actually started in 6th march in
> Telegram channel of the brazilian community, where it has been carried on,
> and where we generally use to talk most (159 members, around some 80 users
> connecting daily and some 20 activelly communicating). Many members made
> remarks and suggestions about it and, after all arrangements, general
> aprovals for procedures and utility purpose.
>
> The purpose of this proposal: is to import the survey points published by
> the brazilian government agency for geographical data (called IBGE - (
> http://www.ibge.gov.br/home/geociencias/geodesia/default_sgb_int.shtm).
>
> The source data: is all produced and published by IBGE.
> The government also publishes these data through the more general portal
> for brazilian spatial data (INDE: http://www.visualizador.inde.gov.br -
> Menu: Redes Geodesicas), from where it was dowloaded.
>
> About the licenses for the data: as said in previous exchange of messages
> of other brazilian OSM member with IBGE officials [1], and as stated by the
> brazilian national law for access to information (known as "LAI"), all the
> government data, including IBGE, is free for access, not even requiring to
> say what for it is intended [2] (the exceptions quoted in the law must not
> even be published by the government). IBGE officials explicitly stated, as
> in previous quoted messages, it's free for OSM purposes, for copy, sharing
> and changes, since quoting the source, and not requiring further back
> communication.
>
> The aim of the import: is to have all these points with their precise
> coordinates provided by the government, placed in OSM brazilian map to help
> on aligning imagery, fixing borders, found places in remote regions, etc.
>
> It can be objected: found no survey point in imagery on the ground.
> That's true. Many things pedestrians have mapped can't be seen on
> sattelite imagery now, like door numbers, shop names, highway signals, and
> many other small things, perhaps also fire_hidrants, etc. It usually
> resides all on local mapper's word.
> Also imagery resolution is improving constantly, so perhaps not too later
> we all can see many more things on sattelite imagery.
> Anyway, the government, through its data itself and its official reports
> of survey points, states they are there on the ground.
>
> As a single example: there's a survey point (a small plate) over a
> boundary_stone in the Brazil-Venezuela-Guyana triple border, reported in
> [3]. It seems not visible in imagery, nor the boundary_stone. At least I
> still haven't found it (but I'm looking for). But just seeing this
> officialy reported point in JOSM (5.2018977222 <(201)%20897-7222>,
> -60.737554)[4] indicates this triple border in OSM is currently more
> than 1km far from that official measurement, thus deserving some revision.
>
> Other general informations:
> -All the objects proposed to import came previously converted by IBGE in
> WGS84 format in the original downloaded shape file.
> -There will be no relation (in OSM peculiar concept for relation) to be
> stablished between these individual points.
> -Only are meant to be imported the portion of the stations classified as
> in good conditions, leaving aside the ones destructed or not found as
> quoted in the official reports. So the final total number of points to be
> imported is smaller than in the original shp.
>
> The proposed tags are these (english translation or meaning below in
> parenthesis):
>
> description=Rede Geodésica do IBGE - Estação SAT DOPPLER
> (=IBGE Geodetic Network - <6 types of station, for: SAT DOPPLER; SAT
> GPS; Polygonal; Triangulation; Elevation Reference; Permanent GNSS>); by

semanárioOSM Nº 347 07/03/2017-13/03/2017

[weeklyteam]

Bom dia,

O semanárioOSM Nº 347, o resumo de tudo o que acontece no mundo OpenStreetMap, 
está publicado *em português*:

http://www.weeklyosm.eu/pb/archives/8867/

Aproveite!

semanarioOSM? 
Quem?: https://wiki.openstreetmap.org/wiki/WeeklyOSM#Available_Languages 
Onde?: 
https://umap.openstreetmap.fr/en/map/weeklyosm-is-currently-produced-in_56718#2/8.6/108.3
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