[OSM-talk] Duplicate nodes incorrectly removed by bot BugBuster ?

[Apollinaris Schoell]

Hi Ruben,


On 29 Sep 2009, at 18:48 , Ruben Wisniewski wrote:

> Hi Apollinaris,
>
> currently the bot only affects long ways which is an error which was
> well discussed on #osm and #osm-de and
> doubled nodes in a way which is for month a common check in validator
> script of JOSM, which is used by many users.

validator results must be checked and no user should blindly confirm.
and validator does the wrong thing for tiger data!
I can't remember any discussion about it on #osm, I am not subscribed  
to #osm-de
there is no wiki page describing this bot.

> Nobody ever complains about user edits which removed doubled nodes,  
> and
> the only thing which was discussed here
> is that the importscript got errors.
>

the bot can't distinguish between imports and user edits. the errors  
discussed for unclosed polygons are errors and should be fixed. no  
objections here

> So I don't see any reason why this bot do something wrong, it's the  
> same
> thing I would do if I got enouth time and
> ressources with JOSM. Else it doesn't risk any informationloss because
> it doesn't delete anything which is valid. It only
> fixes the datastructure which might help routing applications and  
> stuff
> like that.
>
this is not correct. this is what you would do based on the data you  
have seen. other users have different reasons why things are done in a  
specific way. I asked for a description what is done if 2 nodes have  
same coordinate and are used in different ways. this is still not  
answered. you can't say there is no information loss. any node deleted  
is information loss. there has to be a good reason and to do it and it  
must be agreed upon that such a bot  has no negative side effects.  
otherwise has to be considered as vandalism.
there are definitely many places where merges are good. But I fear you  
have destroyed a lot of tiger data this way. explanations are in a  
couple of other mails.
again stop it.
since you mentioned #osm-de I assume you understand german "Gut  
gemeint ist das Gegenteil von gut"


--
apo




>
> Greetings Ruben
>
> Apollinaris Schoell wrote:
>> please stop this Bot until it's usefulness is proven and others  
>> agree it
>> should run.
>> it was never discussed in this list and a bot affecting the whole  
>> planet
>> should be discussed first for risks.
>
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