[mkgmap-dev] [PATCH v2] MDR6

Mon Jan 17 21:30:08 GMT 2011

> Funny. I didn't expect that :-) I wonder how the ZIP information is
> attached to the streets. The map format keeps some surprises...

Since mdr7 only contains street names and not any location or any
other information, I've always thought that it must have to go via
the net section.  I pretty much proved that when I was fixing the sort
order of the sorted-streets part of NET.  If you don't sort them at
all then it can't find any street.

So I think it looks up the street in NET via the sorted names
and then once it has found the street in NET is has access to the zip.

But I'd not fully thought this through until you mentioned it, this
must be how it finds the city too - and I have not looked at that part
of the format.  I wouldn't be at all suprised if the flags describing
if the city/zip fields were not correct/complete - it looks a bit
weird.

..Steve