On Saturday 13 January 2018, Paul Norman wrote:
>
> Has anyone requested the derivative database their produced work is
> based on? It'd give us their interpretation.
As said i have contacted the author (primarily regarding attribution -
which he promised to improve - and has partly already
On 1/11/2018 7:30 AM, Christoph Hormann wrote:
My interpretation of the ODbL here is that this is a share-alike case
that would require the combined data sources to be made available. But
you could probably also look at it differently. I would like to hear
opinions on this. In particular if
On Saturday 13 January 2018, Kathleen Lu wrote:
> Your example doesn't work. Even if you could render
> "distance-to-water"
>
> this way, you wouldn't get a set proprietary data based lakes + OSM
> lakes, you would get a visualization of one massive complicated body
> of water that included all
>
> My argument is about the geometry information. The friction map
> combines road geometries from OSM and Google road geometry information.
> I see no way it can be argued that this combination of road geometry
> data which is rendered into the friction map is a collective database.
> None of
On Friday 12 January 2018, Kathleen Lu wrote:
> Your analysis does not follow.
>
> The researcher's description says: "These datasets were each
> allocated a speed or speeds of travel in terms of time to cross each
> pixel of that type. The datasets were then combined to produce a
> 'friction
They are using OSM road data and Google road data to generate what they
> call a "friction surface" which is essentially a raster map indicating
> how fast you can move at every point of the map - faster on roads,
> slower elsewhere depending on relief and landcover. This friction map
> you can
On Friday 12 January 2018, Rory McCann wrote:
> As near as I can see, the only data they are distributing (publicly)
> is the 2 GeoTIFF files in the "map.ox.ac.uk" page. The question is:
> Is a GeoTIFF file created like this from OSM data which has been
> mixed with other data, a Produced Work, or
As near as I can see, the only data they are distributing (publicly) is
the 2 GeoTIFF files in the "map.ox.ac.uk" page. The question is: Is a
GeoTIFF file created like this from OSM data which has been mixed with
other data, a Produced Work, or a Derived Database?
In support of "Produced Work",
On Thursday 11 January 2018, Kathleen Lu wrote:
>
> I don't have access to the locked Nature article, but the description
> from the first link suggests that they are using a derivative
> statistic calculated from the Google road network instead of the
> network itself: "The game-changing
Hi Christoph,
What is done here is combining road information (and some other data)
> from OSM and proprietary data sources (Google) into a raster map (made
> available as 'friction surface' under the first link above) and doing
> further processing, analysis and map rendering based on that and
>
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