[OHM] Historic places versus confidence

[johnny0]

It's not just shifting borders.  What about changing physical geography?

How best to handle changing coastlines over time? I'm thinking of sunken Roman era ports.

http://ac-support.europe.umuc.edu/~jmatthew/naples/pozzport.htm

As well as man-made land:

http://blog.sfgate.com/ontheblock/2011/02/25/does-your-house-sit-on-landfill/

Also, shifting rivers:

http://blogfishx.blogspot.com/2011/05/will-mississippi-river-change-course.html

And what about earthquakes? There was 2 to 32 feet of horizontal slip in the 1906 San Francisco earthquake. 

http://earthquake.usgs.gov/regional/nca/virtualtour/earthquake.php

This last one is tricky. 

-John

On 2013-03-04, at 12:07 PM, Rob Warren <warren at muninn-project.org> wrote:

> 
> I'd like to get it to that point, especially in recording the changes in the spatial objects over time.
> 
> The other issue is that while a contributor might add the border of the Kingdom of Prussia and another the border of the Free State of Prussia, the ways that are common to both objects will eventually need to be merged. This is going to require some creativity, but it is doable. I also suspect that eventually we'll have a few different 'application websites' that use the OHM back-end for storage but render application specific timelines only.
> 
> I'd suggest we start by putting in some data and we'll build the tools as we go along.
> 
> rhw
> 
> 
> On 28-Feb-13, at 9:11 PM, historic-request at openstreetmap.org wrote:
> 
>> Message: 2
>> Date: Thu, 28 Feb 2013 16:52:27 -0600
>> From: Ed Dykhuizen <eddykhuizen at gmail.com>
>> To: Burrito Justice <burritojustice at oram.com>
>> Cc: "historic at openstreetmap.org" <historic at openstreetmap.org>, Joseph
>> 	Pettigrew <pettigrj at hotmail.com>
>> Subject: Re: [OHM] [Historic] Historic Digest, Vol 7, Issue 9
>> Message-ID:
>> 	<CAHDqN=8gEhHzJeazX6-s8RCu00uE0B-wdiqbqdZPnK9mYLDZbA at mail.gmail.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>> 
>> Hi all,
>> 
>> I don't know if I should be counted towards any quorum of any kind -- I'm
>> not a developer, just someone interested in this topic and very happy to
>> see it being pursued. Specifically, I had an idea a while ago about
>> creating political maps for each year throughout history. So you could look
>> at a political map of Europe around 343 BC and then move a dial towards the
>> same area around 323 BC and see how the political map changed as Alexander
>> the Great went on his conquerin' spree. I'm a big history fan, and more of
>> a visual learner, so something like this would really help me solidify a
>> lot of world history.
>> 
>> Granted, creating political maps for every year in history is a Herculean
>> task. So I was hoping someone could develop an interface that would allow
>> non-tech-savvy people like myself to make such changes. You know, something
>> where I could go to the map of 343 BC and draw and then manipulate a
>> boundary like you do in Photoshop. Maybe I could then put in some
>> placemarks for specific events that then link to Wikipedia articles about
>> them. Then when I'm done I could hit upload and see the changes on a master
>> set of maps that anyone can work on. If it were that easy you could maybe
>> get a lot of history buffs to do the work for free, a la Wikipedia.
>> Teachers in particular might be interested because the end product could
>> really help in teaching history.
>> 
>> I've been reading the emails to try to figure out if something like this is
>> in the works, but I admit, there's so much that's over my head that I just
>> get lost. Does any of what I'm describing sound like anyone's plans?
>> 
>> Thanks so much for reading this,
>> 
>> Ed Dykhuizen
>> 
>> (And I'm including my friend Joe on this -- hope you don't mind!)
> 
> 
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