Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-17 Thread Steve Bennett
On Fri, Jun 17, 2011 at 10:00 AM, Tobias Knerr o...@tobias-knerr.de wrote:
 In my opinion, changeset-based sources also make it clear which edit was
 using which source. For example, since good Bing imagery has become
 available, I've developed a habit to trace the buildings in an area from
 Bing, then go out and survey the area in order to add house numbers and
 other attributes to the buildings (and make sure that the imagery wasn't
 bogus).

Seems like the way in which we work has a big impact on what method of
sourcing makes the most sense. Me, I mostly work off aerial imagery,
with a bit of local knowledge and the odd GPS trace. I don't work in a
particularly focused way - I might start with a GPS trace, then drift
off as I see interesting things to map. Others work obviously
completely differently.

Steve

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Steve Bennett
On Thu, Jun 16, 2011 at 9:06 AM, Ævar Arnfjörð Bjarmason
ava...@gmail.com wrote:
 I've been away for a while. But it seems to me from reading the terms
 that I can't say yes to them in good faith, not because I don't want
 to, but because I remember I derived a few things from external
 CC-BY-SA, and I can't now recall what they were (and this was before
 we had changeset comments).

Hi Aevar,
  Out of curiosity, how do you derive stuff from a CC-BY-SA source
without making a note of the source? I mean, the -BY- part means you
have to attribute the source. So presumably you weren't in compliance
with their licence anyway...

Steve

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Nathan Edgars II

Steve Bennett-3 wrote:
 
 Hi Aevar,
   Out of curiosity, how do you derive stuff from a CC-BY-SA source
 without making a note of the source? I mean, the -BY- part means you
 have to attribute the source. So presumably you weren't in compliance
 with their licence anyway...
 
Here's one possibility:
http://lists.openstreetmap.org/pipermail/talk/2011-June/058736.html
(I haven't received any response yet.)

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Graham Stewart (GrahamS)

Steve Bennett-3 wrote:
 
 ..the -BY- part means you 
 have to attribute the source. So presumably you weren't in compliance
 with their licence anyway...
 

My understanding is that attribution is covered by the public attributions
on this Wiki page: 
http://wiki.openstreetmap.org/wiki/Contributors

and that the source tag is certainly recommended, but not enforced.

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Nick Whitelegg

Yes surely that is the situation - use the source tag when using something 
other than gps.

I have accepted the ToC, TBH I really don't give a monkeys either way though 
have something of a preference for PD as it keeps life simpler, and I believe 
the small minority of OS OpenData I have contributed has source=OS OpenData or 
some such. I really don't care that much even if that is deleted.

Nick

-Toby Murray toby.mur...@gmail.com wrote: -
To: talk@openstreetmap.org
From: Toby Murray toby.mur...@gmail.com
Date: 16/06/2011 02:07AM
Subject: Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% 
of my data?

If only there were a way to indicate the *source* of a given object...

This is obviously hindsight and doesn't help at this point in your
situation but seriously... The source=* tag: use it.

Toby


On Wed, Jun 15, 2011 at 7:48 PM, john whelan jwhelan0...@gmail.com wrote:
 Exactly my own situation, except following poor advice I accepted the new
 CT.  Apparently it is not possible to change the CT status and my formal
 request to have my suspect data deleted seems to have been ignored.

 My recommendation is not to accept the CT, and reenter those items that you
 did from direct observation under a new account.

 Cheerio John

 On 15 June 2011 19:06, Ævar Arnfjörð Bjarmason ava...@gmail.com wrote:

 Back in 2006 I wrote the following when it still wasn't clear what the
 ODbL acceptance terms would be like:

 On Sun, Dec 6, 2009 at 22:10, Ævar Arnfjörð Bjarmason ava...@gmail.com
 wrote:
  If someone presents me with a boolean Do you allow relicensing under
  the ODbL I'll have to say no because some of my edits are derived
  from CC-BY-SA data I don't have permission to license (and I probably
  can't even recall what all of it is).
 
  Which'll mean nuking 50% of all the data in Iceland most of which
  I've touched at some point.

 I've been away for a while. But it seems to me from reading the terms
 that I can't say yes to them in good faith, not because I don't want
 to, but because I remember I derived a few things from external
 CC-BY-SA, and I can't now recall what they were (and this was before
 we had changeset comments).

 What are my options in that situation? Do I either have to see all my
 work removed because I can't account for 100% of my edits or lie on
 the ODbL acceptance form?

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Toby Murray
On Thu, Jun 16, 2011 at 4:37 AM, Graham Stewart (GrahamS)
gra...@dalmuti.net wrote:

 and that the source tag is certainly recommended, but not enforced.

There is no such thing as an enforced tag in OSM. If you choose not
to use a tag then that is your choice. Not using a source tag when
basing your mapping on an external source is a poor choice. And not
just for copyright reasons. It also lets other mappers know how much
to trust the data. When I come across data that seems like it might be
a little off to me I treat things that have a source=survey tag much
differently than things that have a source=random import tag.

Toby

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Graham Stewart (GrahamS)

Toby Murray-2 wrote:
 
 There is no such thing as an enforced tag in OSM. If you choose not
 to use a tag then that is your choice.
 

Enforced may have been a poor choice of word.

What I meant was that, as I understand it, there is no particular licensing
requirement that every node/way derived from a CC-by-SA source must have a
source= tag on it (as Steve Bennett seemed to be suggesting).

My understanding is that the overall attribution on the Contributors page is
sufficient.

This certainly intuitively fits with other CC-by-SA projects. For example if
you use some CC-by-SA source code then you don't need to add an attribution
comment on every line of code - you just need one somewhere prominent.

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread M∡rtin Koppenhoefer
2011/6/16 Toby Murray toby.mur...@gmail.com:
 On Thu, Jun 16, 2011 at 4:37 AM, Graham Stewart (GrahamS)
 gra...@dalmuti.net wrote:

 and that the source tag is certainly recommended, but not enforced.

 There is no such thing as an enforced tag in OSM. If you choose not
 to use a tag then that is your choice. Not using a source tag when
 basing your mapping on an external source is a poor choice. And not
 just for copyright reasons. It also lets other mappers know how much
 to trust the data. When I come across data that seems like it might be
 a little off to me I treat things that have a source=survey tag much
 differently than things that have a source=random import tag.


You can also put this information in the change-set-comment. IMHO this
is where this belongs to. AFAIK the source-tag is disputed and it is
recommended to use the changeset comments.

cheers,
Martin

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread SomeoneElse

On 16/06/2011 18:00, M∡rtin Koppenhoefer wrote:

You can also put this information in the change-set-comment. IMHO this
is where this belongs to. AFAIK the source-tag is disputed and it is
recommended to use the changeset comments.


The problem with the changeset source tag is that there's no 
granularity - one tag applies to the whole edit. Presumably the only 
time that this would be valid would be an entirely armchair tracing 
session with no local knowledge and no other on-the-ground evidence 
(surely not recommended) or an import (which should surely afterwards be 
tidied up with local knowledge anyway).


Using changeset comments is even worse; it's just a bunch of text 
associated with a particular edit. If I wanted to know the source for 
updates for the Pennine Way 
(http://www.openstreetmap.org/browse/relation/63872) I'd need to fetch 
the relation history (not feasible via the API I suspect), fetch 209 
changeset details, and manually parse a lump of English text in each one 
for something that might be a source.


Cheers,
Andy


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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Toby Murray
On Thu, Jun 16, 2011 at 12:50 PM, SomeoneElse
li...@mail.atownsend.org.uk wrote:
 On 16/06/2011 18:00, M∡rtin Koppenhoefer wrote:

 You can also put this information in the change-set-comment. IMHO this
 is where this belongs to. AFAIK the source-tag is disputed and it is
 recommended to use the changeset comments.

 The problem with the changeset source tag is that there's no granularity -
 one tag applies to the whole edit. Presumably the only time that this would
 be valid would be an entirely armchair tracing session with no local
 knowledge and no other on-the-ground evidence (surely not recommended) or an
 import (which should surely afterwards be tidied up with local knowledge
 anyway).

 Using changeset comments is even worse; it's just a bunch of text associated
 with a particular edit. If I wanted to know the source for updates for the
 Pennine Way (http://www.openstreetmap.org/browse/relation/63872) I'd need to
 fetch the relation history (not feasible via the API I suspect), fetch 209
 changeset details, and manually parse a lump of English text in each one for
 something that might be a source.

I also frequently use multiple sources in a single changeset. I often
flip between faster bing imagery and slower to load but better aligned
and sometimes more distinct NAIP imagery. Which one I actually trace a
feature from depends on multiple factors. Hence I often put source
tags on individual objects. And with 84 million of them in the
database, I would hardly call this tag disputed

Toby

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Ed Avis
Ævar Arnfjörð Bjarmason avarab at gmail.com writes:

I've been away for a while. But it seems to me from reading the terms
that I can't say yes to them in good faith, not because I don't want
to, but because I remember I derived a few things from external
CC-BY-SA, and I can't now recall what they were (and this was before
we had changeset comments).

If it's the case that geodata is not covered by copyright (the main 
justification
for the licence change), and therefore CC-BY-SA is not enforceable, you need
not worry.

-- 
Ed Avis e...@waniasset.com


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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Steve Bennett
On Fri, Jun 17, 2011 at 3:00 AM, M∡rtin Koppenhoefer
dieterdre...@gmail.com wrote:
 You can also put this information in the change-set-comment. IMHO this
 is where this belongs to. AFAIK the source-tag is disputed and it is
 recommended to use the changeset comments.

Source is disputed? By whom? I've never heard any dispute about it? I
put a source tag on every single object I create, and try and update
it when I modify it. IMHO changeset comments really don't work well
(in Potlatch at least), and it's far too easy to include the wrong
objects in a changeset.

Steve

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread M∡rtin Koppenhoefer
2011/6/17 Steve Bennett stevag...@gmail.com:
 On Fri, Jun 17, 2011 at 3:00 AM, M∡rtin Koppenhoefer
 Source is disputed? By whom? I've never heard any dispute about it? I
 put a source tag on every single object I create, and try and update
 it when I modify it.



It is not completely useless but I observed that in general the more
versions an object has, the less reliable the source tags on it are.
Maybe you are an exception and do update every object you touch and
you verify always the source on it, but most mappers actually don't.


 IMHO changeset comments really don't work well
 (in Potlatch at least),


it depends how often you upload. For small edits where you just enter
that place you have recently been to, I find them perfect. Bigger
edits will usally get more generic comments, but when tracing from
aerial imagery I include the provider and if known the year of the
images.


 and it's far too easy to include the wrong
 objects in a changeset.


either way you can miss some parts of your edit.

cheers,
Martin

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-16 Thread Tobias Knerr
Steve Bennett wrote:
 On Fri, Jun 17, 2011 at 3:00 AM, M∡rtin Koppenhoefer
 dieterdre...@gmail.com wrote:
 You can also put this information in the change-set-comment. IMHO this
 is where this belongs to. AFAIK the source-tag is disputed and it is
 recommended to use the changeset comments.
 
 Source is disputed? By whom? I've never heard any dispute about it?

Source is very much alive. It has been suggested to use the source tag
on the changeset instead of every single object edited within that
changeset, but it's admittedly still mostly used the traditional way.

 I put a source tag on every single object I create, and try and update
 it when I modify it. IMHO changeset comments really don't work well
 (in Potlatch at least), and it's far too easy to include the wrong
 objects in a changeset.

I put source tags on changesets now. Source tags on objects tend to get
outdated, and I find updating all these tags painfully tedious. When you
add new objects, it would at least still possible to mass tag them with
your source, but that isn't possible when you have to insert your
sources into an existing source tag's value. It seems like unnecessary
effort, too, because I tend to group my edits into sensible changesets
anyway and rarely use more than one source for each changeset.

In my opinion, changeset-based sources also make it clear which edit was
using which source. For example, since good Bing imagery has become
available, I've developed a habit to trace the buildings in an area from
Bing, then go out and survey the area in order to add house numbers and
other attributes to the buildings (and make sure that the imagery wasn't
bogus).
This means that I will upload two changesets: One based on Bing, one
based on survey. Looking at the history and the source tags on
changesets makes it completely clear what data originates where. This
wouldn't work with a source tag on the object: A source=Bing;survey does
/not/ tell you that addr:housenumber=72 was surveyed and roof:color=red
was determined by looking at Bing images.

-- Tobias Knerr

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[OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-15 Thread Ævar Arnfjörð Bjarmason
Back in 2006 I wrote the following when it still wasn't clear what the
ODbL acceptance terms would be like:

On Sun, Dec 6, 2009 at 22:10, Ævar Arnfjörð Bjarmason ava...@gmail.com wrote:
 If someone presents me with a boolean Do you allow relicensing under
 the ODbL I'll have to say no because some of my edits are derived
 from CC-BY-SA data I don't have permission to license (and I probably
 can't even recall what all of it is).

 Which'll mean nuking 50% of all the data in Iceland most of which
 I've touched at some point.

I've been away for a while. But it seems to me from reading the terms
that I can't say yes to them in good faith, not because I don't want
to, but because I remember I derived a few things from external
CC-BY-SA, and I can't now recall what they were (and this was before
we had changeset comments).

What are my options in that situation? Do I either have to see all my
work removed because I can't account for 100% of my edits or lie on
the ODbL acceptance form?

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100%of my data?

2011-06-15 Thread David Groom



- Original Message - 
From: Ævar Arnfjörð Bjarmason ava...@gmail.com

To: OpenStreetMap blather talk@openstreetmap.org
Sent: Thursday, June 16, 2011 12:06 AM
Subject: [OSM-talk] Can I say yes to the ODbL if I can't account for 
100%of my data?




Back in 2006 I wrote the following when it still wasn't clear what the
ODbL acceptance terms would be like:

On Sun, Dec 6, 2009 at 22:10, Ævar Arnfjörð Bjarmason ava...@gmail.com 
wrote:

If someone presents me with a boolean Do you allow relicensing under
the ODbL I'll have to say no because some of my edits are derived
from CC-BY-SA data I don't have permission to license (and I probably
can't even recall what all of it is).

Which'll mean nuking 50% of all the data in Iceland most of which
I've touched at some point.


I've been away for a while. But it seems to me from reading the terms
that I can't say yes to them in good faith, not because I don't want
to, but because I remember I derived a few things from external
CC-BY-SA, and I can't now recall what they were (and this was before
we had changeset comments).

What are my options in that situation? Do I either have to see all my
work removed because I can't account for 100% of my edits or lie on
the ODbL acceptance form?


I am afraid that the only honest position you can take is to not agree to 
the CT's.  However, we don't yet know whether this will mean all your work 
will be removed, because we don't yet know what will happen to the 
contributions of those users who have not agreed to the CT's


Regards

David 






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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-15 Thread john whelan
Exactly my own situation, except following poor advice I accepted the new
CT.  Apparently it is not possible to change the CT status and my formal
request to have my suspect data deleted seems to have been ignored.

My recommendation is not to accept the CT, and reenter those items that you
did from direct observation under a new account.

Cheerio John

On 15 June 2011 19:06, Ævar Arnfjörð Bjarmason ava...@gmail.com wrote:

 Back in 2006 I wrote the following when it still wasn't clear what the
 ODbL acceptance terms would be like:

 On Sun, Dec 6, 2009 at 22:10, Ævar Arnfjörð Bjarmason ava...@gmail.com
 wrote:
  If someone presents me with a boolean Do you allow relicensing under
  the ODbL I'll have to say no because some of my edits are derived
  from CC-BY-SA data I don't have permission to license (and I probably
  can't even recall what all of it is).
 
  Which'll mean nuking 50% of all the data in Iceland most of which
  I've touched at some point.

 I've been away for a while. But it seems to me from reading the terms
 that I can't say yes to them in good faith, not because I don't want
 to, but because I remember I derived a few things from external
 CC-BY-SA, and I can't now recall what they were (and this was before
 we had changeset comments).

 What are my options in that situation? Do I either have to see all my
 work removed because I can't account for 100% of my edits or lie on
 the ODbL acceptance form?

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Re: [OSM-talk] Can I say yes to the ODbL if I can't account for 100% of my data?

2011-06-15 Thread Toby Murray
If only there were a way to indicate the *source* of a given object...

This is obviously hindsight and doesn't help at this point in your
situation but seriously... The source=* tag: use it.

Toby


On Wed, Jun 15, 2011 at 7:48 PM, john whelan jwhelan0...@gmail.com wrote:
 Exactly my own situation, except following poor advice I accepted the new
 CT.  Apparently it is not possible to change the CT status and my formal
 request to have my suspect data deleted seems to have been ignored.

 My recommendation is not to accept the CT, and reenter those items that you
 did from direct observation under a new account.

 Cheerio John

 On 15 June 2011 19:06, Ævar Arnfjörð Bjarmason ava...@gmail.com wrote:

 Back in 2006 I wrote the following when it still wasn't clear what the
 ODbL acceptance terms would be like:

 On Sun, Dec 6, 2009 at 22:10, Ævar Arnfjörð Bjarmason ava...@gmail.com
 wrote:
  If someone presents me with a boolean Do you allow relicensing under
  the ODbL I'll have to say no because some of my edits are derived
  from CC-BY-SA data I don't have permission to license (and I probably
  can't even recall what all of it is).
 
  Which'll mean nuking 50% of all the data in Iceland most of which
  I've touched at some point.

 I've been away for a while. But it seems to me from reading the terms
 that I can't say yes to them in good faith, not because I don't want
 to, but because I remember I derived a few things from external
 CC-BY-SA, and I can't now recall what they were (and this was before
 we had changeset comments).

 What are my options in that situation? Do I either have to see all my
 work removed because I can't account for 100% of my edits or lie on
 the ODbL acceptance form?

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