[mkgmap-dev] Small problem with global index

Mon Nov 22 10:43:01 GMT 2021

Hi Gerd

The first stages of investigation should avoid other complexities that
might be introduced by --lower-case (and --unicode). In this
environment there should be no difference between SECONDARY and
TERTIARY so the question is reduced to .equals() vs .compare() and
other flag settings / Mdr sections.

Your tests seem be examining the behaviour of "Find" > "POI" limited by
region. My devices don't seem to have the ability do this and I don't
see it in BaseCamp / MapSource either. "Find" > "Address" /
"Intersection" are the only places where I can limit by Country and
City. 

Your workflow makes sense when all upper case, but might not lead us to
the best solution for mixed case.

Ticker

On Mon, 2021-11-22 at 05:24 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> sorry, seems I attached the wrong patch for the default style. The
> problem is neither about upper/lower case nor about special
> characters like highway shield codes.
> It might be a problem in Garmin software, but it might as well show a
> problem with wrongly calculated repeat flags or maybe other flags.
> My thinking is that we should try to learn from the gmapsupp that is
> produced by MapSource, so my current workflow is this:
> - Compile the tile(s) and the gmapi and the gmapsupp.
> - Start MapSource, try if search works (it still doesn't for my
> example).
> - Generate a gmapsupp with Mapsource.
> - Extract the tiles from the gmapsupp (or copy those produced by
> mkgmap)
> - execute MdrDisplay and MdrCheck on the two different gmapsupp.img
> - compare all significant difference (different flags, existence of
> different sections etc)
> 
> My latests results are that both MdrCheck and mkgmap should use
> TERTIARY strength were SECONDARY is used now.
> Unpatched MdrCheck reports several errors reg. repeat flags on Garmin
> maps which disapear when I use TERTIARY (the default).
> There also seems to be a problem with the positions of some bit
> flags. It seems that some flags should be shifted depending on the
> size of sections, but I don't know yet the details.
> 
> Gerd