Re: [OSM-legal-talk] share-alike on generalized data?

2016-02-06 Thread Rob Myers
On 06/02/16 11:32 AM, Tobias Wendorff wrote:
> 
> Sure, I understand that. But I thought the main concept behind share-alike
> is to make data better by foreign "investitions".

In general the idea of share-alike is to make sure that downstream users
of data have the same ability to work with the data as upstream users.

So it's about the users continuing to be able to use the data rather
than improving it, although that may be a side effect in some cases.

- Rob.


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Re: [OSM-legal-talk] share-alike on generalized data?

2016-02-06 Thread Tobias Wendorff
First of all: sorry, my mail client had problems while parsing the mail.
That's what the message-id got lost. I hope that won't happen again :(

> The relevant question here is if during this process you generate a
> derivative database containing both OSM and proprietary data.  If you
> do you'd need to share this database.

I'll contact the programmer of the generalization tool, but since input
files are seperate shapefiles, there isn't a mixture of data from me
as a data provider. I can't tell you, if the tool will create a mixed
database ... the resulting files will be stored in ONE file, like a PDF
or AI file or anything else. So that's bad ... or even worse.

> From my perspective this is not relevant - first because usefulness is a
> subjective assessment and second because the ODbL share-alike
> provisions are not about usefulness, they are about giving something
> back in case the ODbL data is useful for you in connection with other
> data.

Sure, I understand that. But I thought the main concept behind share-alike
is to make data better by foreign "investitions".

> But in your specific use case i see no real problem.  If you move the
> OSM street data to match your other information you can easily make
> available the modified street data.  If you do it the other way round
> modifying other data using OSM data things are more tricky.  But you
> can try to avoid that.

I think, it's vice-versa. Since some elements will also move (push, pull,
snap), f.e. landuse polygons, they will interact with OSM data. So,
according to ODbL, everything which is interacting with OSM data needs
to be released nevertheless it's in the same database or now.

That's something, the employer didn't take into account and it might
break the use he had in idea. We are about using OpenStreetMap data on
an area of about 5000 square kilometer.

Best regards,
Tobias


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Re: [OSM-legal-talk] share-alike on generalized data?

2016-02-06 Thread Christoph Hormann
On Saturday 06 February 2016, Tobias Wendorff wrote:
>
> Since this process includes an (automatic processed) interaction
> between foreign and OpenStreetMap data, share-alike might step in.

The relevant question here is if during this process you generate a 
derivative database containing both OSM and proprietary data.  If you 
do you'd need to share this database.

> Since the process of generalization doesn't make the quality of
> OpenStreetMap data any better (f.e. higher position error), the
> results won't be useful at all or could even have a bad effect,
> if they get imported back into OpenStreetMap.

From my perspective this is not relevant - first because usefulness is a 
subjective assessment and second because the ODbL share-alike 
provisions are not about usefulness, they are about giving something 
back in case the ODbL data is useful for you in connection with other 
data.  

But in your specific use case i see no real problem.  If you move the 
OSM street data to match your other information you can easily make 
available the modified street data.  If you do it the other way round 
modifying other data using OSM data things are more tricky.  But you 
can try to avoid that.

-- 
Christoph Hormann
http://www.imagico.de/

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Re: [OSM-legal-talk] Use of data from the EU GMES/Copernicus programme

2016-02-06 Thread Christoph Hormann

Since there do not seem to be any more objections or comments on the 
matter i am going to add this to the contributors page so people can 
use the data where it seems useful.

I have no specific use cases at the moment but over time it will 
probably be of interest to add some Sentinel-2 imagery to the osmim 
(http://maps.imagico.de/#osmim).

-- 
Christoph Hormann
http://www.imagico.de/

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Re: [OSM-legal-talk] share-alike on generalized data?

2016-02-06 Thread Tobias Wendorff
Am So, 7.02.2016, 00:53 schrieb Rob Myers:
> In general the idea of share-alike is to make sure that downstream users
> of data have the same ability to work with the data as upstream users.
>
> So it's about the users continuing to be able to use the data rather
> than improving it, although that may be a side effect in some cases.

The problem of the project is that data from the local mapping agencies
can't be released under share-alike. Of cause, the project would release
all the changed made to OSM street data, but it wouldn't be possible to
release the laduse data.

It was planned to release tools and information about differences between
cadastral land register and OpenStreetMap in terms of completeness and
other dimensions.

I'm sad that this new project can't be realised because of the strict
share-alike. I think, it's really impossible to convince the LMA to
release the generalized data under ODbL and I don't think it's enough
to describe the way and tools to do the generalization, is it?

I mean, this won't be enough, will it?
- get OSM data extract from 2016-02-07
- filter streets
- get LMA data extract from 2015-12-31
- open in generalization tool XY with parameters XY

Since the  generalization tool isn't free, nearly no user could take
advantage of this.


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Re: [OSM-legal-talk] share-alike on generalized data?

2016-02-06 Thread Paul Norman

On 2/6/2016 9:41 PM, Tobias Wendorff wrote:

I mean, this won't be enough, will it?
- get OSM data extract from 2016-02-07
- filter streets
- get LMA data extract from 2015-12-31
- open in generalization tool XY with parameters XY


When publicly using a derivative database (or produced work from one) 
you need to share either the derivative database, alterations to the 
original database that form the derivative database,  or contents plus 
method to perform the alterations. The tool isn't really an issue here, 
as you've indicated the external data isn't available under an open license.


It sounds like you have two databases, one the landuse data, the other 
the roads data, together which form a collective database. This might be 
in one file, or more than one file. Because both databases are derived 
from OSM data, by design you have to release them (or another option 
under s 4.6).


Alternately, you might have one database with both landuse and roads 
data, which might be in one file or more than one file, but the results 
are the same.


What you don't have to do is release the original proprietary database 
from the LMA, but it would be able to be partially reconstructed from 
what you do release. Again, this is by design.


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[OSM-legal-talk] share-alike on generalized data?

2016-02-06 Thread Tobias Wendorff
Desr members of Legal-Talk!

I'm working on a project, which mixes feature classes of different
sources: buildings, landuse and other data from a local mapping
agency and streets streets from OpenStreetMap

Since the produced work will be published, share-alike needs to be discussed.
At lower scales, the resulting map should be generalized. While the
licenses of the mapping agency don't have a share-alike licens, ODbL
does of course.

At some places, OpenStreetMap objects might get moved or pushed to
prevent cartographic collisions with the other objects. Also, landuse
areas could be snapped to OSM streets to fill the wholes.

Since this process includes an (automatic processed) interaction
between foreign and OpenStreetMap data, share-alike might step in.

Since the process of generalization doesn't make the quality of
OpenStreetMap data any better (f.e. higher position error), the
results won't be useful at all or could even have a bad effect,
if they get imported back into OpenStreetMap.

According to ODbL, I'd need to publish the changed streets, a changeset
(or equal) or a description, how to change the data - but only upon
a request. Is this useful for generalized data at all?

Best regards,
Tobias


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