[talk-ph] some osm-ph database stats as 20090211

maning sambale emmanuel.sambale at gmail.com
Mon Feb 23 03:26:09 GMT 2009


More stats:

Total gpx points with tag philippines = 779085 points

On Thu, Feb 19, 2009 at 12:09 PM, maning sambale
<emmanuel.sambale at gmail.com> wrote:
> On Thu, Feb 19, 2009 at 9:23 AM, Eugene Alvin Villar <seav80 at gmail.com> wrote:
>> I think there's a big caveat to these user stats. I think it only considers
>> who last edited the node or way masking the original contributor. Plus,
>> deletions, merges, and splits are not considered.
>
> Right, the user tag is only for the most recent contributor editing
> the tag/way.  Currently, I can't/won't analyze history of each node.
> That's a good indicator to look into, more users editing a node/way
> could mean better data accuracy.  Or put it another way, untouched
> node/way means the data is accurate already.
>
> Percent of contributions belonging to the top 10 contributors:
> nodes: 91%
> ways : 94%
>
>
>
>> On Thu, Feb 19, 2009 at 1:30 AM, Mike Collinson <mike at ayeltd.biz> wrote:
>>>
>>> At 11:46 AM 18/02/2009, maning sambale wrote:
>>> >His some stats as of 20090211
>>> >
>>> >Total Ways: 56064
>>> >Total Nodes: 588281
>>> >Total Relations: 40
>>> >Highway length sums (metres):  33456642m (roughly 16% of roads
>>> >according to CIA Factbook)
>>> >Total number of contributors: 150
>>> >total nodes belonging to the top 30 contributors: 580227 (99%)
>>> >total ways belonging to the top 30 contributors: 55307 (99%)
>>> >
>>> >What does this tell me?
>>> >
>>> >1.  Contributors are increasing (+20% as of 20090114)
>>> >2.  Data contributed are also increasing (+5% as of 20090114)
>>> >3.  99% of all data are contributed by the top 30 active mappers.
>>> >
>>> >While we are increasingly becoming popular the number of active
>>> >mappers are just a third of all contributors?
>>> >How do you interpret the stats?
>>>
>>> It sounds very encouraging, particularly the number contributors that have
>>> at least had a go.
>>>
>>> Even in the UK, which must have several thousand contributors, I believe a
>>> study last year showed that 80% was contributed by just ?40? contributors.
>>>
>>> If easy to do, it would be interesting to calculate what percentage was
>>> contributed by, say, the top 5 contributors.  The lower that figure is, the
>>> more folks other than the original core contributors are getting active.
>>>
>>> Mike
>>>
>>>
>>>
>>> _______________________________________________
>>> talk-ph mailing list
>>> talk-ph at openstreetmap.org
>>> http://lists.openstreetmap.org/listinfo/talk-ph
>>
>>
>>
>> --
>> http://vaes9.codedgraphic.com
>>
>> _______________________________________________
>> talk-ph mailing list
>> talk-ph at openstreetmap.org
>> http://lists.openstreetmap.org/listinfo/talk-ph
>>
>>
>
>
>
> --
> cheers,
> maning
> ------------------------------------------------------
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> ------------------------------------------------------
>



-- 
cheers,
maning
------------------------------------------------------
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
------------------------------------------------------




More information about the talk-ph mailing list