[OHM] Open Historical map

[Dan Vanderkam]

As an FYI, ISO-8601 does specify a standard format for date and time
intervals. It uses a forward slash and allows some shorthands:
- 1980-07-01/1983-05-01
- 1980-07-01/07 (same as 1980-07-01/1980-07-07)

Not the prettiest, but it is a standard.
https://en.wikipedia.org/wiki/ISO_8601#Time_intervals

On Sun, May 6, 2018 at 3:28 PM, Tim Waters <chippy2005 at gmail.com> wrote:

> https://wiki.openstreetmap.org/wiki/Key:start_date#Approximations
>
> gives a number of such approximations with
>
> 1980-07-01..1983-05-01 as a suggested value.
>
> I seem to recall coming across a kind of bibliographic standard of all the
> ways that dates can be encoded to capture fuzzyness, if I come across it
> I'll add the info the page
>
> Tim
>
> On 6 May 2018 at 11:19, PauLL170 <bilbo.beuthel at gmail.com> wrote:
>
>> Hi,
>>
>> i'm already mapping Germersheim and a bit of Trier :) . Regarding
>> start_date and end_date I was talking about the following: E. g. if you
>> have a photo from 1983-05-01 with a certain building and one from
>> 1980-07-01 without it, you can set as start_date 1980-07-01..1983-05-01. In
>> my opinion it is important that the time slider recognizes this form,
>> because it is often the case. Generally, we will have to think about how to
>> render this object in this period, in which the building possibly already
>> have existed. But for now, I just want to suggest that the time slider
>> recognizes this form in general, as far as it is doable. As a first version
>> I imagine a check box: "show doubtful objects". If it is activiated, the
>> "start_date" technically is set 1980-07-01 and if not, it is set 1983-05-01.
>>
>> Best regards
>> Paul
>>
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>
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