[HOT] Could we get more out of our mappers by asking for less?

Florian Niel florian.niel at gmail.com
Sun Feb 26 10:11:21 UTC 2017

I would switch it: Map buildings (and maybe residential areas) first and 
then roads. Buildings or residential areas help mapping roads (if a road 
is a track or unclassified) while roads are no help when mapping buildings.

Am 26.02.2017 um 03:36 schrieb Vao Matua:
> John,
> I think there is merit to what you are saying.
> The one caution I would suggest is that "If something is worth mapping 
> it is worth mapping correctly".  Here in Ethiopia I have spent a lot 
> of time adding nodes to roads that were digitized at a coarse scale.  
> Mapping quickly doesn't have to be done crudely.
> There is no troupe of magic mapping elves that clean up the rough 
> mapping.
> The next set of HOT projects I will set up will be roads/highways only 
> and then buildings only.
> Keep mapping,
> Emmor
> On Sun, Feb 26, 2017 at 1:16 AM, john whelan <jwhelan0112 at gmail.com 
> <mailto:jwhelan0112 at gmail.com>> wrote:
>     Just an ideal thought.  It came about as I'm loading in bits of
>     Nigeria by the enamel bucket at the moment then looking for
>     untagged ways and crossing highways.
>     What stands out are blocks where every track and settlement is
>     mapped and blank bits of the map.  I've been attempting to join
>     bits of highway together to reduce the islands.
>     Projects that ask for buildings are different but for projects
>     where we are looking to map settlements and connecting highways if
>     we omitted the paths and tracks leading to fields and rivers and
>     mapped say two or three highways max to a cluster of three huts we
>     might be able to get rid of some of the large gaps in the map and
>     unless someone can think of a reason why tracks and paths leading
>     to fields are essential I think many NGOs could manage without. 
>     In return we could make more settlements and highways available in
>     the same time frame.
>     Part of the problem is each project is looked at separately.  Each
>     project manager only thinks in terms of their own project rather
>     than in terms of how much resources are available overall.  I am
>     aware that some organisations feel they are independent having
>     their own mapathons but to get the quality up you need validation
>     and if you don't believe me just have a look at the map after a
>     mapathon.  Nigeria is full of settlements wrongly tagged,
>     building=residential or yes are amongst the most common incorrect
>     tagging.  A number of small villages have been interconnected with
>     highway=primary etc.  Crossing ways by the hundred.
>     I don't know how you would write the instructions for a such a
>     project but it might help the projects get completed more
>     quickly.  I heard an off the cuff remark about a project recently,
>     "It'll take a year at that level of detail.".   Off the cuff
>     comments are more gut feel than accurate but there was an element
>     of truth in the remark and I had the feeling the data was desired
>     within a month or two.  I would suggest if you want the mapping
>     done quickly reduce the scope a little.
>     Thoughts?
>     Thanks John
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