Recent diary entries
JOSM gives you the power to do OpenHistoricalMap mapping offline, use custom filters, use custom base maps without tools like Map Warper and much more.
I could not find any used solution for marking up information as hypothetical so I did it in my own way.
For dates OHM seams to use
end_date(that’s at least what I have been seeing).
So when I decided on how I would mark up hypothetical information I wanted to be flexible.
I started with
ohm:hypothetical, then follows the tag/key that’s hypothetical. for example a hypothetical
start_date would look like:
ohm:hypothetical:start_date=yes this would also allow the value to be
no for none hypothetical information.
The reason not to use
ohm:hypothetical=<tag-name>" is that then you can’t have more then one
ohm:hypothetical tag(OSM does not allow duplicate keys).
For marking up a hypothetical location I can see two approaches one is to just have
ohm:hypothetical:ohm:location=yes another is go with
Another approach to the problem would be to just append the hypothetical key with
If it does exist a common solution I can replace my one, but I could not find one…
Anyone else that have been marking up any data as hypothetical? How did you do this?
Feedback on this?
end_date should they be
ohm:end_date? They are OHM specific as far as I know.
Hi! I wonder if I’m on the right track? I’ve created boundaries for parishes in Stockholm county. The ambition has been to capture all changes. Every change means that a new parish is created. So far their names are separated by the addition of years to their names. Waiting for the time slider the boundaries are all piled on one another.
Who wants to work on a “getting started” guide for OHM? I’d love to collaborate and learn more about the platform.
So, I’m not sure how many people are on this website. I just made this account today. I was going to start working on a historical map of the Chicago “L” Train system based on year. Are we allowed to contribute to the building of the time/date slider?
OpenHistoricalMap.org is working again… well the website only at least