[OSM-talk] Questions about levels and fractional levels as well as how to handle them.

[John Karr]

Hello All,

I hope this is the correct mailing list to ask this question. I'm new to the OSM community and had a question which I hear is very controversial. I’m part of a team working on an app for indoor navigation using simple indoor tagging. The audience for this app are individuals who are blind/low-vision so that they can navigate indoor spaces.  I'm wondering how best to handle fractional levels when parsing the repeat_on tag. Currently, the project does not account for fractional levels and everyone involved seems to have a different opinion on the matter, but not very many solutions emerged from the discussion. And with that question more seem to arise. For instance, how common are fractional levels mapped in the indoor plans? Are there any standards or best practices associated with determining which fraction to dub a level (i.e. 1.5, 1.2, 1.02, etc.)? I would love to know how the community feels about this topic and how best to proceed. Also if anyone has an example of a repeat_on tag that contains fractional levels and how those are expressed that would be very much appreciated.



Thanks,
John Karr
Technology Product Research - Programmer I
American Printing House for the Blind
1839 Frankfort Avenue
Louisville, KY 40206-3148
jkarr at aph.org

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