--- Melchior FRANZ wrote:
> * Thomas Förster -- Monday 11 February 2008:
> > Note that METAR itself only codes visibility up to 9999 m.
>
> Only if it uses the 4-digit visibility code. But it can also be
> something like "KEDW 110755Z 24006KT 45SM SCT250 04/M01 A3014"
> where the visibility is 45SM ... 45 (statute) miles.
>
> > Everything above comes out of the report as 9999 too. [...]
>
> Yes, *iff* a four digit code is used, then 9999 means "more
> than 10 km.
>
> > Think someone did a conservative choice here.
>
> Conservative? If we have to make something up because there is
> no information, should we then take something that makes fgfs
> crawl and look ugly, or rather something faster and prettier?
> We chose the latter. What would you have done?
I'm sure you alreay know the answer : Make it a property value in
preferences.xml, defaulting to 10km :)
Of course, the 12nm "island" may be due to an assumption that the maximum
visibility will be 10km, so it may not just be case of replacing the constant...
-Stuart
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