[OSM-talk] Mapchester - continuation of work

[Andy Robinson]

My experience too with respect to every hour on the bike = 1 hour editing
with JOSM.

The hours go up the prettier and more feature full the map needs to be as a
lot of the extra data takes longer to acquire if you have to stop the bike.

These figures work fine for an urban landscape but might be somewhat
different for wholly rural areas. Thus for large scale mapping the time to
gather would probably be longer but the level of detail might be somewhat
less. Editing time for long runs is longer unless it is automated (with
edits limited to checking and adjustment).

Andy

Andy Robinson
Andy_J_Robinson at blueyonder.co.uk 

>-----Original Message-----
>From: talk-bounces at openstreetmap.org [mailto:talk-
>bounces at openstreetmap.org] On Behalf Of Etienne
>Sent: 07 June 2006 13:13
>To: Dan Karran; talk at openstreetmap.org
>Subject: Re: [OSM-talk] Mapchester - continuation of work
>
>I did some back-of-an-envelope calculations recently about the
>progress I'd been making in my area.
>
>All these figures are very approximate, but should be in the right
>order of magnitude.
>
>Number of trackpoints uploaded = 500,000
>Sampling rate = 1 point per second
>Data collection time = 500,000/60/60 = 140 hours (by bicycle)
>
>Time spent creating nodes, segments, ways etc is about 1 hour per 1
>hour's worth of data collection (using JOSM).  So that's about 140
>hours at the keyboard.
>
>Area covered: Chertsey, Addlestone, Weybridge, Shepperton, Walton,
>Hersham, Byfleet
>Approximate population of these areas combined is 100,000.
>
>So for suburban London something like 300 man hours per 100,000
>population would seem to be a reasonable measure.
>
>Rates would obviously be different for very densely populated areas
>(more people per mile of roadway) or for sparsely populated areas
>(less people per mile of roadway).
>
>It would be interesting to compare these figures with other people's
>experiences.  There's probably quite a lot of variance.
>
>Etienne
>
>On 6/7/06, Dan Karran <dan at karran.net> wrote:
>> On 6/7/06, Andy Robinson <Andy_J_Robinson at blueyonder.co.uk> wrote:
>>
>> > They (Futursonic) have purchased a Garmin GPSMap 60 CSx to gather
>additional
>> > data in the centre of Manchester so it will be interesting to hear from
>them
>> > how well it works in the areas that the older Garmin units had problem
>with
>> > during the Mapchester weekend.
>>
>> It would be interesting to see a rough comparison of the amount it
>> costs for an organisation to go out and map an area with their own
>> equipment, contributing it to OSM, compared to the cost of licensing
>> OS data for the same area. Does anyone have any sort of figures like
>> that available?
>>
>>
>> Cheers,
>> Dan
>>
>> --
>> Dan Karran
>> dan at karran.net
>> www.dankarran.com
>>
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