[OSM-talk] Thai problems: 1: Foreign Language naming conventions 2: Elevated Highways.

[Nick Black]

On 1/30/07, Tim Francis <tim.francis.asia at gmail.com> wrote:
> I am new to OSM and for my sins, I'm living in Thailand. I have a GPS
> receiver which I can and should be contributing to the project. The current
> GPS uploaded data for Thaoland is 0 - I am looking at a totally blank map.
>
>  Foreign/dual language conventions:
>  However, I've discovered that there are no GPX files uploaded, no OSM data
> or examples which might demonstrate how to approach the problem of usign
> non-western character set in the naming of roads and streets. Do I
>
>
> use the thai font name, Englisg transliteration (which could be spelled
> several ways),
>
> uae a JOSM second language class so I can have both English and Thai. This
> prtoblem must also exist in Russian/Greek language maps - what is the best
> solution?
>
>  Elevated Highways:
>  Bangkok is a mess of elevated highways, one built directly above an
> existing roadway. Often, the upper deck is a toll road. I am assuming I
> should be using layers to put the two roads on the same geospace.
>
>  The questions are:
>
>
> how do you code/mark up the ramps between the two layers, ie, how does a
> SatNav system differentiate between an off-ramp, and a spur which is not as
> yet built (we have those too).

If the off-ramp or spur isn't yet built, it won't be in the Sat-nav's
map, so the unit will never guide someone off it, unless there is a
servere GPS/INS or software screw up.

Guiding a car to a 50' drop instead of a
> gentle ramp is something best avoided.

Yes, and I don't know of any commercially available navigation systems
that consider elevation in these terms.  Most road networks, including
OSM's do not record elevation of nodes or segments.

> How do you code a toll road and toll gate.
>  Hopefully have the first GPX files uploaded in the next 10 days. I'm
> working on the Chiang Mai area first.
>
>  Tim Francis
>
>
>
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>


-- 
Nick Black
--------------------------------
http://www.blacksworld.net