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

Tue Jun 2 07:48:31 BST 2020

Hi Franco,

interesting! The file created with the patched version is quite different. It contains NET and NOD sections and also a MDR (the global index).
Did you try option --x-center-poi-type=0x2f01 with the patched version? Maybe the type is important and 0x6601 was a bad choice.
I've checked only a few tiles, but all of them contained at least one fuel station with additional address info (city/country/phone number). Maybe that's the important thing.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von franco_bez <franco.bez at web.de>
Gesendet: Montag, 1. Juni 2020 23:44
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] Performance of POI search on the Device

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
<http://files.mkgmap.org.uk/download/476/dach_boundary_gmapsupp.img>

the previous file (see below) triggers the problem.

Ciao,
Franco

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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