Re: [HOT] building=yes both on the way and on the nodes

[Jean-Marc Liotier]

On 2018-07-08 21:22, john whelan wrote:
> I suspect its more general than just Chad since its more than one
mapper.  At 2,657 in Chad I'd say that's liveable with unless some kind
soul could zap them.

As I said, https://www.openstreetmap.org/changeset/60516490 took care of
that.

> I very much doubt there is a valid reason for their existence.

They are actually quite useful: they indicate an area where contributors
do not care about neither JOSM validator nor Osmose reports.

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Re: [HOT] building=yes both on the way and on the nodes

[Jean-Marc Liotier]

On 2018-07-08 22:22, Pierre Béland wrote:
> A more generic solution where it shows child nodes of a building [..]
> way({{bbox}})["building"]->.b;
> node(w.b)[!"source"](if:count_tags()>0);

Nice, I was indeed wondering if Overpass had a concept of child nodes like
JOSM. Very useful, thanks !


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Re: [HOT] building=yes both on the way and on the nodes

[john whelan]

Thanks your emails came in fine.  Sounds like yahoo.fr and Google spam
filters are now aligned.

Cheerio John

On Sun, 8 Jul 2018, 4:22 pm Pierre Béland,  wrote:

> It seems that you have not received my previous answer to John on this
> list where I provided a solution to query a bbox from Overpass.
> See http://overpass-turbo.eu/s/A9c
>
> A more generic solution where it shows child nodes of a building with any
> key except source.
> In this example around Freetown, it even picks a power line connected to a
> building where also the node has keys. We also see what seems to be field
> work for the Ebola outbreak in 2015 by MSF and Red Cross where keys such as
> name are added to child node of a building.
>
> http://overpass-turbo.eu/s/A9E
>
> overpass turbo
>
> 
>
>
> content
> /* --> osm keys (except source) on buidings child nodes */
> [out:xml][timeout:60];
>
> way({{bbox}})["building"]->.b;
> node(w.b)[!"source"](if:count_tags()>0);
> out meta;<; out meta;
> >; out meta;
>
>
> Pierre
>
>
> Le dimanche 8 juillet 2018 15 h 23 min 48 s HAE, john whelan <
> jwhelan0...@gmail.com> a écrit :
>
>
> I suspect its more general than just Chad since its more than one mapper.
> At 2,657 in Chad I'd say that's liveable with unless some kind soul could
> zap them.  I very much doubt there is a valid reason for their existence.
>
> Cheerio John
>
> On 8 July 2018 at 15:12, Jean-Marc Liotier  wrote:
>
> On Sun, July 8, 2018 4:09 pm, john whelan wrote:
> > I'm seeing a fair number of these especially in CHAD.  Could someone do
> an
> > overpass or whatever to see how big a problem it is?
>
> I loaded the following query into JOSM:
>
> [out:xml];
> {{geocodeArea:chad}}->. searchArea;
> (
>   way["building"="yes"](area. searchArea);
> );
> (._;>;);
> out meta;
>
> I ran the validator... "Nodes duplicating parent way tags" numbered 2657
> and they were all building=yes
>
> Committed: https://www.openstreetmap.org/ changeset/60516490
> 
>
> The changeset covers only a region around N'Djaména - I don't know if it
> is because no buildings in Chad exist outside of this are or if my query
> applied to the bounding box rather than to the geocodeArea I intended.
>
>
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Re: [HOT] building=yes both on the way and on the nodes

[Pierre Béland]

It seems that you have not received my previous answer to John on this list 
where I provided a solution to query a bbox from Overpass.See 
http://overpass-turbo.eu/s/A9c

A more generic solution where it shows child nodes of a building with any key 
except source.In this example around Freetown, it even picks a power line 
connected to a building where also the node has keys. We also see what seems to 
be field work for the Ebola outbreak in 2015 by MSF and Red Cross where keys 
such as name are added to child node of a building. 

http://overpass-turbo.eu/s/A9E

| 
| 
|  | 
overpass turbo


 |

 |

 |



content /* --> osm keys (except source) on buidings child nodes */
[out:xml][timeout:60];

way({{bbox}})["building"]->.b; 
node(w.b)[!"source"](if:count_tags()>0);
out meta;<; out meta;
>; out meta;

 
Pierre 
 

Le dimanche 8 juillet 2018 15 h 23 min 48 s HAE, john whelan 
 a écrit :  
 
 I suspect its more general than just Chad since its more than one mapper.  At 
2,657 in Chad I'd say that's liveable with unless some kind soul could zap 
them.  I very much doubt there is a valid reason for their existence.

Cheerio John

On 8 July 2018 at 15:12, Jean-Marc Liotier  wrote:

On Sun, July 8, 2018 4:09 pm, john whelan wrote:
> I'm seeing a fair number of these especially in CHAD.  Could someone do an
> overpass or whatever to see how big a problem it is?

I loaded the following query into JOSM:

[out:xml];
{{geocodeArea:chad}}->. searchArea;
(
  way["building"="yes"](area. searchArea);
);
(._;>;);
out meta;

I ran the validator... "Nodes duplicating parent way tags" numbered 2657
and they were all building=yes

Committed: https://www.openstreetmap.org/ changeset/60516490

The changeset covers only a region around N'Djaména - I don't know if it
is because no buildings in Chad exist outside of this are or if my query
applied to the bounding box rather than to the geocodeArea I intended.



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Re: [HOT] building=yes both on the way and on the nodes

[john whelan]

Thank you.

Cheerio John

On 8 July 2018 at 15:36, Jean-Marc Liotier  wrote:

> On 2018-07-08 21:22, john whelan wrote:
>
> I suspect its more general than just Chad since its more than one mapper.
> At 2,657 in Chad I'd say that's liveable with unless some kind soul could
> zap them.
>
>
> As I said, https://www.openstreetmap.org/changeset/60516490 took care of
> that.
>
>
> I very much doubt there is a valid reason for their existence.
>
>
> They are actually quite useful: they indicate an area where contributors
> do not care about neither JOSM validator nor Osmose reports.
>
>
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Re: [HOT] building=yes both on the way and on the nodes

[john whelan]

I suspect its more general than just Chad since its more than one mapper.
At 2,657 in Chad I'd say that's liveable with unless some kind soul could
zap them.  I very much doubt there is a valid reason for their existence.

Cheerio John

On 8 July 2018 at 15:12, Jean-Marc Liotier  wrote:

> On Sun, July 8, 2018 4:09 pm, john whelan wrote:
> > I'm seeing a fair number of these especially in CHAD.  Could someone do
> an
> > overpass or whatever to see how big a problem it is?
>
> I loaded the following query into JOSM:
>
> [out:xml];
> {{geocodeArea:chad}}->.searchArea;
> (
>   way["building"="yes"](area.searchArea);
> );
> (._;>;);
> out meta;
>
> I ran the validator... "Nodes duplicating parent way tags" numbered 2657
> and they were all building=yes
>
> Committed: https://www.openstreetmap.org/changeset/60516490
>
> The changeset covers only a region around N'Djaména - I don't know if it
> is because no buildings in Chad exist outside of this are or if my query
> applied to the bounding box rather than to the geocodeArea I intended.
>
>
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Re: [HOT] building=yes both on the way and on the nodes

[Jean-Marc Liotier]

On Sun, July 8, 2018 4:09 pm, john whelan wrote:
> I'm seeing a fair number of these especially in CHAD.  Could someone do an
> overpass or whatever to see how big a problem it is?

I loaded the following query into JOSM:

[out:xml];
{{geocodeArea:chad}}->.searchArea;
(
  way["building"="yes"](area.searchArea);
);
(._;>;);
out meta;

I ran the validator... "Nodes duplicating parent way tags" numbered 2657
and they were all building=yes

Committed: https://www.openstreetmap.org/changeset/60516490

The changeset covers only a region around N'Djaména - I don't know if it
is because no buildings in Chad exist outside of this are or if my query
applied to the bounding box rather than to the geocodeArea I intended.


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Re: [HOT] building=yes both on the way and on the nodes

[john whelan]

​There is a batch here in Chad:

 "name"="Mandi"
"place"="village"
  Coordinates: 13.4288186, 14.7635571​

users starting BUR with a number appear to have some training issues and
not just on buildings.

Cheerio John


On 8 July 2018 at 10:46, Jorieke Vyncke  wrote:

> Where in Chad is this John?
>
> Jorieke
>
> 2018-07-08 15:09 GMT+01:00 john whelan :
>
>> I'm seeing a fair number of these especially in CHAD.  Could someone do
>> an overpass or whatever to see how big a problem it is?
>>
>> and they were done months ago by mappers who haven't mapped recently.
>>
>> Thanks John
>>
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Re: [HOT] building=yes both on the way and on the nodes

[john whelan]

I hate to say it but I'm not sure.  I just grab chunks these days and scan
them for missing tags etc.  I came across at least three instances by
different mappers using JOSM so not the building_tool, and I have cleaned
up some 500 manually but I think an automated edit might save my fingers.
It depends on how many there are.  There seems little point in leaving
feedback as the ones I did a history on were done back in feb and at least
one of the mappers hasn't mapped in the last three months.  I did leave a
comment on one HOT project however.  Geography never was one of my strong
points.

Tunbun Fitinewa is on the slice if that helps.

I suggest running overpass to see how many there are then clean up with an
automated script after going through the hoops to do an automated edit but
overpass and scripting are not my strong points.

Cheerio John

On 8 July 2018 at 10:46, Jorieke Vyncke  wrote:

> Where in Chad is this John?
>
> Jorieke
>
> 2018-07-08 15:09 GMT+01:00 john whelan :
>
>> I'm seeing a fair number of these especially in CHAD.  Could someone do
>> an overpass or whatever to see how big a problem it is?
>>
>> and they were done months ago by mappers who haven't mapped recently.
>>
>> Thanks John
>>
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Re: [HOT] building=yes both on the way and on the nodes

[Jorieke Vyncke]

Where in Chad is this John?

Jorieke

2018-07-08 15:09 GMT+01:00 john whelan :

> I'm seeing a fair number of these especially in CHAD.  Could someone do an
> overpass or whatever to see how big a problem it is?
>
> and they were done months ago by mappers who haven't mapped recently.
>
> Thanks John
>
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Re: [HOT] building=yes both on the way and on the nodes

[Pierre Béland]

Hi John,
In Overpass-turbo, with the following Query it is possible to select any bbox 
and extract.  The query will retain only buildings where duplicated tag on the 
chlid nodes. For this example in N'Djamena, other then the duplicate, we see 
that the OSM contributor added various unnecessary tags on the 
nodeshttp://overpass-turbo.eu/s/A9c
example  
    
    
    
  
 
Pierre 
 

Le dimanche 8 juillet 2018 10 h 11 min 23 s HAE, john whelan 
 a écrit :  
 
 I'm seeing a fair number of these especially in CHAD.  Could someone do an 
overpass or whatever to see how big a problem it is? 

and they were done months ago by mappers who haven't mapped recently.

Thanks John
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