[mkgmap-dev] [Patch] Overflow in splitter node counters

Tue Apr 3 13:07:56 BST 2012

Hi Thorsten,

> Date: Tue, 3 Apr 2012 12:58:49 +0200
> From: kukuk at suse.de
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] [Patch] Overflow in splitter node counters
> 
> 
> Hi Gerd,
> 
> On Mon, Apr 02, Gerd Petermann wrote:
> 
> > > The SRTM data has some duplicate nodes (duplicate as of same
> > > lat/lon, but different ID). Does one of the tools ignore them?
> > > At least mkgmap warns about them.
> > > Else no, I have no idea.
> > 
> > What is the value that the patched splitter reports for the coords occupancy?
> > Here is what I see for a small file:
> > ...
> > ***********************************************************
> > Final statistics
> > ***********************************************************
> > Needed dictionary entries: 25 of 65535
> > coords occupancy
> > MAP occupancy: 7.544.535
> > ...
> 
> With the patched version:
> 
> Needed dictionary entries: 414 of 65535
> coords occupancy
> MAP occupancy: 1.014.076.753

Hmm, this is confusing. The map should count each different node-id as one entry, so maybe you have duplicates
in your data? If yes, make sure that equal node-ids have equal lat/lon values, else you'll get wrong results.

Gerd

> 
>   Thorsten
> 
> -- 
> Thorsten Kukuk, Project Manager/Release Manager SLES
> SUSE LINUX Products GmbH, Maxfeldstr. 5, D-90409 Nuernberg
> GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg)
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