Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Oscar Orbe


--- On Sun, 1/9/11, Matt Amos  wrote:

From: Matt Amos 
Subject: Re: [OSM-talk] To those who remove dupe nodes
To: "Nathan Edgars II" 
Cc: talk@openstreetmap.org
Date: Sunday, January 9, 2011, 5:07 PM

On Sun, Jan 9, 2011 at 4:25 PM, Nathan Edgars II  wrote:
> Frederik Ramm wrote:
>> Your original complaint was about people removing *duplicate* nodes
>> though, not people removing fresh, unused nodes. That's another
>> situation; if your upload creates duplicate nodes then your upload is
>> buggy and should be stopped.
>>
> Not always - an import of TIGER county lines will create dupes with TIGER
> roads, and these should not be joined.

in this case Oscar's import consists of landuse areas, which should be
joined. otherwise, what's in the gap? ;-)

with the admin boundaries and physical features it's more of a matter
of opinion; there are good reasons to join them, and good reasons to
have them separate.

cheers,

matt

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hello, yes some of my polygons are a bit messy, nothing very relevant actually- 
I'll be fixing that in the next 24/48 hours.
regards--oscar 


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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Matt Amos
On Sun, Jan 9, 2011 at 4:25 PM, Nathan Edgars II  wrote:
> Frederik Ramm wrote:
>> Your original complaint was about people removing *duplicate* nodes
>> though, not people removing fresh, unused nodes. That's another
>> situation; if your upload creates duplicate nodes then your upload is
>> buggy and should be stopped.
>>
> Not always - an import of TIGER county lines will create dupes with TIGER
> roads, and these should not be joined.

in this case Oscar's import consists of landuse areas, which should be
joined. otherwise, what's in the gap? ;-)

with the admin boundaries and physical features it's more of a matter
of opinion; there are good reasons to join them, and good reasons to
have them separate.

cheers,

matt

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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Lennard

On 9-1-2011 17:17, andrzej zaborowski wrote:


You can use the set python of scripts descibed in the wiki here:
http://wiki.openstreetmap.org/wiki/Upload.py to do this to some
degree.  The "smarter-sort" script sorts your changes in such a way
that they look as much as possible like a manual edit.  This way
objects and their chilren hopfully end up in an atomic diff.


I've been using that set of scripts for months now, for import style 
uploads, and it works well. You *have* to know what you're doing, and 
know the API/data model reasonably well in case things go wrong.


The scripts work on osmChange (.osc) files internally. I've extended the 
script included on that page to take an .osm file as input and return 
another .osm file at the end of the upload. That way, I can take the 
finished upload and postprocess with JOSM.


smarter-sort.py is pretty good in limiting those situations where people 
are deleting 'unused' nodes during your upload.


I also once requested the same sorting functionality in JOSM. Kind of 
fell on deaf ears, as the ticket hasn't been acted upon. 
https://josm.openstreetmap.de/ticket/4299


--
Lennard

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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Nathan Edgars II


Frederik Ramm wrote:
> 
> Your original complaint was about people removing *duplicate* nodes 
> though, not people removing fresh, unused nodes. That's another 
> situation; if your upload creates duplicate nodes then your upload is 
> buggy and should be stopped.
> 
Not always - an import of TIGER county lines will create dupes with TIGER
roads, and these should not be joined.
-- 
View this message in context: 
http://gis.638310.n2.nabble.com/To-those-who-remove-dupe-nodes-tp5904360p5904644.html
Sent from the General Discussion mailing list archive at Nabble.com.

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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread andrzej zaborowski
On 9 January 2011 14:54, Matt Amos  wrote:
> hi oscar. are you using diff uploads to create the polygons? if so, it
> would be a good idea to group the uploaded ways and relations for the
> polygon along with the nodes it needs. this would mean that such an
> error wouldn't occur. i seem to remember that this was done for the
> french corrine import and maybe it would be a good idea to talk to
> them about good techniques for doing this before going any further?

You can use the set python of scripts descibed in the wiki here:
http://wiki.openstreetmap.org/wiki/Upload.py to do this to some
degree.  The "smarter-sort" script sorts your changes in such a way
that they look as much as possible like a manual edit.  This way
objects and their chilren hopfully end up in an atomic diff.

Cheers

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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Frederik Ramm

Oscar,

Oscar Orbe wrote:
in any case, I dont think it's a good idea to remove unused nodes which 
are extremely recent.


I don't think that someone dos it programatically - but if you edit an 
area and find a stray unused node you often delete that without checking 
when it was created!


Your original complaint was about people removing *duplicate* nodes 
though, not people removing fresh, unused nodes. That's another 
situation; if your upload creates duplicate nodes then your upload is 
buggy and should be stopped.


Bye
Frederik

--
Frederik Ramm  ##  eMail frede...@remote.org  ##  N49°00'09" E008°23'33"

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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Oscar Orbe
hello:thanks for the hint.in any case, I dont think it's a good idea to remove 
unused nodes which are extremely recent.
regards--oscar
--- On Sun, 1/9/11, Matt Amos  wrote:

From: Matt Amos 
Subject: Re: [OSM-talk] To those who remove dupe nodes
To: "Oscar Orbe" 
Cc: talk@openstreetmap.org
Date: Sunday, January 9, 2011, 1:54 PM

On Sun, Jan 9, 2011 at 1:29 PM, Oscar Orbe  wrote:
>
> Dear list
> I am uploading some landuse polygons and sometimes I get the error that says 
> something like "that node does not exist".
> I think there are people removing unused nodes too fast.
> Perhaps those people can change their algorithms so that they only remove 
> unused nodes whose age is at least 24 hours for example??? so they wont 
> interrupt uploading processes...

hi oscar. are you using diff uploads to create the polygons? if so, it
would be a good idea to group the uploaded ways and relations for the
polygon along with the nodes it needs. this would mean that such an
error wouldn't occur. i seem to remember that this was done for the
french corrine import and maybe it would be a good idea to talk to
them about good techniques for doing this before going any further?

cheers,

matt



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Re: [OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Matt Amos
On Sun, Jan 9, 2011 at 1:29 PM, Oscar Orbe  wrote:
>
> Dear list
> I am uploading some landuse polygons and sometimes I get the error that says 
> something like "that node does not exist".
> I think there are people removing unused nodes too fast.
> Perhaps those people can change their algorithms so that they only remove 
> unused nodes whose age is at least 24 hours for example??? so they wont 
> interrupt uploading processes...

hi oscar. are you using diff uploads to create the polygons? if so, it
would be a good idea to group the uploaded ways and relations for the
polygon along with the nodes it needs. this would mean that such an
error wouldn't occur. i seem to remember that this was done for the
french corrine import and maybe it would be a good idea to talk to
them about good techniques for doing this before going any further?

cheers,

matt

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[OSM-talk] To those who remove dupe nodes

2011-01-09 Thread Oscar Orbe
Dear listI am uploading some landuse polygons and sometimes I get the error 
that says something like "that node does not exist". 
I think there are people removing unused nodes too fast.
Perhaps those people can change their algorithms so that they only remove 
unused nodes whose age is at least 24 hours for example??? so they wont 
interrupt uploading processes...
thanks--oscar


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