[HOT] Gentle grump

john whelan jwhelan0112 at gmail.com
Tue Mar 3 20:12:21 UTC 2015

Just for the heck of it I ran JOSM validation on a tile I was mapping
before touching it.  It turned up duplicate buildings, crossed buildings,
lots of highways separated by a few inches etc.

Do we need an idiot guide?  A sort of this is how to provide the maximum
benefit for the least effort.

Mine would probably run along the lines of for Africa the convention is
only the following values of highways are used for minor highways: path,
track, unclassified, use highway=road if you are uncertain.  Someone will
probably have tagged the secondary and primary highways.
If possible use JOSM especially for buildings.  Please map buildings as
building=yes do not assume it is a house.

People use maps to get from one place to another, if the highways are
joined up then routing software such as comes as part of OSMAND can be
used.   Look for highways around settlements that connect to other

<Crtl><arrow> in JOSM will navigate vertically or horizontally making
scanning easier.

I assume that most of these errors have crept in because JOSM validation
was not used.  I suspect that the immediate feedback from JOSM might assist
our less skilled mappers to improve their skills.

Cheerio John
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