[mkgmap-dev] address search problem due to required "State" value

Thu Sep 24 12:32:19 BST 2009

Excellent progress! I mentioned before I don't get much of this hexa
engineering.  But I have several mdr files for anyone to look into.  I
anyone interested?  Where do I dump them?

On Tue, Sep 22, 2009 at 4:52 PM, Steve Hosgood <steve at tallyho.bc.nu> wrote:
> Felix Hartmann wrote:
>
> Steve Ratcliffe wrote:
>
> On 21/09/09 17:03, Steve Hosgood wrote:
>
>
> MDR 1:  A reverse index from maps to the other sections.
> MDR 4:  poi types, partially known
> MDR 5:  Cities
> MDR 6:  unknown, wiki claims it is a list of cities but I don't believe that
>
>
>
> I wrote that bit of the wiki, and for me at least it's true. This is
> deduced from an NT map, with a record-length of 3 bytes. I wrote a
>
>
> Yea, the big problem is that there is not just one format, I've no
> idea about NT, but there are multiple different header sizes and
> record sizes possible.  Also there is a big difference between the
> full format as it comes with a map for mapsource, and the format when
> it transformed and put inside the gmapsupp.
>
>
> I didn't know that, but it's all in need of documentation eventually.
> You're right though Steve - the wiki needs the sections talking about
> individual MDRs to specify more clearly what the record-size is, and maybe
> the other 4-byte value from the header too - the one tentatively marked
> "flags" or "?".
>
>
>
> Why do you try to go for NT format?
>
> Because that's all I've got.
> At the time I started, I didn't realise there was anything unusual about the
> map I have (it's the one that came with my Streetpilot).
>
> As for NT maps being slower - well it seems that they're using compression
> on the postcode, street-name and city lists. I can imagine that there's a
> speed penalty.
>
> Steve.
>
>
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>

-- 
cheers,
maning
------------------------------------------------------
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
------------------------------------------------------