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[mkgmap-dev] Performance of POI search on the Device

From franco_bez franco.bez at web.de on Mon Jun 1 22:44:14 BST 2020

Hi Gerd,
some more test results:
I switched back to the unpatched mkgmap-r4506.
Instead I added some POIs to the boundary style (all fuel stations).
This helped, now POI search is still fast.
this file gives no problems, includes fuel stations

the previous file (see below) triggers the problem. 


franco_bez wrote
> Hi Gerd,
> thanks for the binary.
> I did a lot of testing. I do not get any difference. As soon as I have a
> transparent layer, like housenumbers or bundaries the POI search is slow.
> not matter if I have "route" and "index" in the options or not.
> I also tried with and without "--x-center-poi-type=0x3200".
> I also can not find a POI named "center of map" do I have to add an
> additional option?
> a sample layer built with the patched mkgmap: dach_boundary_gmapsupp.img
> <http://files.mkgmap.org.uk/download/475/dach_boundary_gmapsupp.img>  
> Ciao,
> Franco
> Gerd Petermann wrote
>> Hi Franco,
>> here is a quick hack to add a POI in the center of a map at resolution
>> 24.
>> If the source contains no POI. Default type is 0x6601.
>> You can use e.g. --x-center-poi-type=0x3200 to change the type to a
>> bollard. The name of the POI is "center of map"
>> I've only tested that the POI is added to the map and to the index of
>> POIs.
>> The binary is here:
>> http://files.mkgmap.org.uk/download/474/mkgmap.jar
>> Gerd
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