[OHM] New to OHM

[Albin Larsson]

Hello all OHM people!

My name is Albin Larsson and I'm living in Nyköping Sweden where I studies
elite orienteering and technology. I found this project some months ago but
it was during my current winter holiday I did look into it for the first
time. I read through the mailing list and looked into the OSM site fork.

I have some experience on the iD code and a basic knowledge about the OSM
stack. I have some years of programming experience and looking into
learning Ruby on Rails. Is it possible to setup the existing OHM Rails site
without Nominatim/Mapnik/PostGIS/etc? Makes it easy for me that does not
have more of a dev machine then my Raspberry Pi and laptop...

I did read that you was looking into making a time slider for the site.
Doing this with the Mapnik generated tiles sounds like a bad idea as the
tiles are static? The feature could be implemented in the iD editor by
extending feature filtering(#2357
<https://github.com/openstreetmap/iD/pull/2357>) to make it more easy
to maintain we could take a look a plugin interface(#1392
<https://github.com/openstreetmap/iD/issues/1392>) for iD. The main issue
is the time format, not only do we need to deal with different calenders
but also time zones. One solution would be to always add a default tag with
a specific time zone/calender format based/converted from what format the
user inputed. Then use this value for the slider and other features. This
would of course require a tagging scheme.


Looking into how the current tagging is done I must as somethings.

If a building was a hotel(example) prior to a specific date and after that
date is a residential building, how would I tag it?

If a building is moved to another location, how would I tag it?

Tagging of historic events such as a battle?

If the exact date of object such as a stone age settlement is unknown, how
would I tag it?

If I start using custom tags because there is no specified should I add
them to OHM/Tags in the wiki so they could be discussed/used by other users?

Is the Historical Sources wiki page
<https://wiki.openstreetmap.org/wiki/Historical_Sources> made for OHM? I
know tons of datasets that's under public domain. For example
K-Samsök(SOCH) by the Swedish National Heritage Board has about 1.6 million
objects with coordinates, I think about 50% of the objects would be
suitable for OHM and much of the data is available as public domain(I had a
internship at the Swedish National Heritage Board some years ago).

I'm hoping that I will be able to contribute in different ways to this
project.

//
Albin Larsson

Himlinge Östergård Sweden 06-01-2015
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