[OHM] Open Historical map

[Tim Waters]

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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