Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-16 Thread Vincent Privat
So maybe we'll finally have an answer to our questions in
http://trac.openstreetmap.org/ticket/3266 ?
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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-16 Thread Kay Drangmeister

Vincent Privat wrote:


So maybe we'll finally have an answer to our questions in
http://trac.openstreetmap.org/ticket/3266 ?


Isn't there a hstore in the rendering-db?

Kay

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-16 Thread Frederik Ramm

Hi,

On 02/16/2012 03:05 PM, Kay Drangmeister wrote:

Isn't there a hstore in the rendering-db?


No.

Bye
Frederik

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-16 Thread Lennard

On 15-2-2012 17:06, Morten Kjeldgaard wrote:


I received the following reply at 10.14.44 GMT+01:00:


Hi mok0,
Thanks for the notice, and I'm currently submitting a changeset where
everything with generator:source=wind also has power_source=wind
specified as well. Also, I'll take a look into the mapnik style sheet
to see how this can be updated to remove the depreciated tags.


Aside from the existence of generator:source=wind this demonstrates he 
hasn't quite understood it yet. The new scheme should be added[1] to the 
stylesheet, but the old scheme should not be removed. At least not 
before the overwhelming majority of existing objects are compatible with 
the new tagging, or after some extensive time has passed to allow this 
tag change to propagate.


[1] Has now been done, but not deployed yet.

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[OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Morten Kjeldgaard

Hi,

In changeset 10678735 [1] a new user has removed all power_source=wind  
tags on wind turbines.


The result is that wind turbines are no longer rendered on the mapnik  
layer.


It is true that the power_source tag is deprecated, but being  
deprecated does IMHO not mean that a tag should be removed in a  
massive clean-up operation, especially if you do not follow up on the  
consequences of such a change. Adding the new generation tag  
(generator:source = wind) is fine, but removing the old tag is not.


I have emailed the user and asked him to revert the changeset.

Cheers,
Morten

[1] http://www.openstreetmap.org/browse/changeset/10678735

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Maarten Deen

On 2012-02-15 09:26, Morten Kjeldgaard wrote:


It is true that the power_source tag is deprecated, but being
deprecated does IMHO not mean that a tag should be removed in a
massive clean-up operation, especially if you do not follow up on the
consequences of such a change. Adding the new generation tag
(generator:source = wind) is fine, but removing the old tag is not.


I'm curious why the power_source tag is set to deprecated while the 
Mapnik stylesheet has not been adapted to include the new tag. I would 
think that would the logical step. No use in making a new tag that is 
not rendered, especially when the old tag is supposed to not be used 
anymore.
The wiki is also less than helpful. The wiki page of power_source [1] 
is an immediate redirect to generator:source [2] with no mention that 
power_source might be deprecated.


[1] 
http://wiki.openstreetmap.org/w/index.php?title=Key:power_sourceredirect=no

[2] http://wiki.openstreetmap.org/wiki/Key:power%20source

Maarten

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Janko Mihelić
2012/2/15 Maarten Deen md...@xs4all.nl


  I'm curious why the power_source tag is set to deprecated while the
 Mapnik stylesheet has not been adapted to include the new tag. I would
 think that would the logical step.


Not rendering the new public transport proposal is slowing down the change
to the new set of tags. Maybe this is the faster way to make a change in
mapnik.

Janko
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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Paul Norman
I know the stylesheet maintainers are backed up, but is there a ticket
indicating what additions to the stylesheet are desired in trac? The only
mapnik ticket I can find relating to public transport is
http://trac.openstreetmap.org/ticket/2798 

 

Do any of the general purpose styles (e.g. mapquest, cloudmade) render
anything for any public_transport=* values?

 

 

From: Janko Mihelić [mailto:jan...@gmail.com] 
Sent: Wednesday, February 15, 2012 12:56 AM
To: Maarten Deen
Cc: talk@openstreetmap.org
Subject: Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

 

 

2012/2/15 Maarten Deen md...@xs4all.nl

 

I'm curious why the power_source tag is set to deprecated while the Mapnik
stylesheet has not been adapted to include the new tag. I would think that
would the logical step. 


Not rendering the new public transport proposal is slowing down the change
to the new set of tags. Maybe this is the faster way to make a change in
mapnik.

Janko

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Cobra

On 2012-02-15 09:55, Janko Mihelić wrote:

Not rendering the new public transport proposal is slowing down the change to 
the new set of tags. Maybe this is the faster way to make a change in mapnik.


Do you already know the Transport layer on osm.org? There are also several 
other public transport maps, see 
http://wiki.openstreetmap.org/wiki/Public_transport#Maps
I agree that public_transport=stop_position and maybe platforms should be 
rendered on mapnik as well.

bye

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Frederik Ramm

Hi,

On 02/15/2012 09:44 AM, Maarten Deen wrote:

I'm curious why the power_source tag is set to deprecated while the
Mapnik stylesheet has not been adapted to include the new tag.


There are no deprecated tags, and nobody has the power to set a tag to 
deprecated.


What's even more problematic is if people try to automatically change a 
large number of objects away from what they consider deprecated to 
some new tagging scheme. This requires a much broader approval than a 
few votes cast on a wiki page that nobody reads; we expect any automated 
or even mechanical edit to be discussed on the mailing lists beforehand.



No use in making a new tag that is
not rendered


This is not true; there are many tags that are not rendered and the map 
on www.openstreetmap.org is not the arbiter of what tags should be used.



The wiki is also less than helpful. The wiki page of power_source [1] is
an immediate redirect to generator:source [2] with no mention that
power_source might be deprecated.


Yes, this is not helpful, and certainly no basis for effecting an 
automated edit.


When looking at the other edits of the user who did this edit, we can 
see that not only did they make this tag change across a number of 
changesets; they also imported wind turbine data from a third-party source.


Unless they can point to a community discussion and agreement that 
preceded the import, they should not only revert their mass edit, but 
also remove the imported data because it doesn't meet our import guidelines.


Morten, could you keep us posted about any replies you get from them. It 
would be preferable if the Netherlands community could deal with this 
but DWG will be happy to step in if there's a problem.


Bye
Frederik

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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Morten Kjeldgaard


On 15/02/2012, at 10.46, Frederik Ramm wrote:

What's even more problematic is if people try to automatically  
change a large number of objects away from what they consider  
deprecated to some new tagging scheme. This requires a much  
broader approval than a few votes cast on a wiki page that nobody  
reads; we expect any automated or even mechanical edit to be  
discussed on the mailing lists beforehand.


I agree completely, see below

Morten, could you keep us posted about any replies you get from  
them. It would be preferable if the Netherlands community could deal  
with this but DWG will be happy to step in if there's a problem.


I received the following reply at 10.14.44 GMT+01:00:


Hi mok0,
Thanks for the notice, and I'm currently submitting a changeset  
where everything with generator:source=wind also has  
power_source=wind specified as well.  Also, I'll take a look into  
the mapnik style sheet to see how this can be updated to remove the  
depreciated tags.


... and I answered thus:


That's great, thanks!

It is great if you fix bugs in the osm tags -- misspellings and such  
-- but you really should not remove tags that someone put there.


If tag removal is to be carried out, it is best to discuss it on the  
mailing list first, but in general, you never know if tags are being  
used by someone, so it's better just to leave them. They do no harm.  
If you are thinking of wasted storage space, think of the extra data  
you produce by generating a changeset plus new versions of all the  
objects...



So, instead of reverting, the user has uploaded a new changeset with  
the fixes.


Cheers,
mok0


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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Chris Hill

On 15/02/12 16:06, Morten Kjeldgaard wrote:


On 15/02/2012, at 10.46, Frederik Ramm wrote:

What's even more problematic is if people try to automatically change 
a large number of objects away from what they consider deprecated 
to some new tagging scheme. This requires a much broader approval 
than a few votes cast on a wiki page that nobody reads; we expect any 
automated or even mechanical edit to be discussed on the mailing 
lists beforehand.


I agree completely, see below

Morten, could you keep us posted about any replies you get from them. 
It would be preferable if the Netherlands community could deal with 
this but DWG will be happy to step in if there's a problem.


I received the following reply at 10.14.44 GMT+01:00:


Hi mok0,
Thanks for the notice, and I'm currently submitting a changeset where 
everything with generator:source=wind also has power_source=wind 
specified as well.  Also, I'll take a look into the mapnik style 
sheet to see how this can be updated to remove the depreciated tags.


... and I answered thus:


That's great, thanks!

It is great if you fix bugs in the osm tags -- misspellings and such 
-- but you really should not remove tags that someone put there.


If tag removal is to be carried out, it is best to discuss it on the 
mailing list first, but in general, you never know if tags are being 
used by someone, so it's better just to leave them. They do no harm. 
If you are thinking of wasted storage space, think of the extra data 
you produce by generating a changeset plus new versions of all the 
objects...



So, instead of reverting, the user has uploaded a new changeset with 
the fixes.


I contacted him too and explained about mass edits and imports. The fact 
that he didn't revert his changesets and attempted to re-add the deleted 
tags is not great. I think he has ended up adding power_source tags to 
objects that didn't have it before.


How can we deter newbies from imports and mass edits? It seems he didn't 
know what he needed to know about prior discussion and agreement, he 
didn't know how to ask a wide enough audience, he didn't have the 
experience to know how to fix the mess he made, and he didn't understand 
the basics of OSM. This is not the first time. I can't blame people for 
not knowing, so how do we inform them, before they wade into problems?


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Cheers, Chris
user: chillly


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Re: [OSM-talk] Wind turbines no longer rendered on mapnik layer

2012-02-15 Thread Russ Nelson
Morten Kjeldgaard writes:
  The result is that wind turbines are no longer rendered on the mapnik  
  layer.

That's only because generator:source=wind doesn't cause them to be
rendered. It's a separate problem that the person deleted
power_source=wind without adding generator:source=wind.

-- 
--my blog is athttp://blog.russnelson.com
Crynwr supports open source software
521 Pleasant Valley Rd. | +1 315-600-8815
Potsdam, NY 13676-3213  | Sheepdog   

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