OK, you can either download the source and compile on your own or use this binary: http://files.mkgmap.org.uk/download/444/display.jar The tool needs the current version of mkgmap. I use it like this to analyse a gmapsupp in the current directory: java -ea -Xmx6800m -cp d:\display\dist\display.jar;d:\mkgmap\dist\mkgmap.jar test.display.MdrDisplay gmapsupp.img > mdr.out 2> mdr.err Adapt the path to the jar files, on linux replace the semicolons ";" by colons ":" I suggest to start with a small gmapsupp (e.g. with two or three *.img) The output in stdout (mdr.out) is a rather large file showing the content of the index, it should start similar to this: --------- Common Header -------------------------------------------------------- 00000000 | 38 02 | Header length 568 00000002 | 47 41 52 4d 49 4e 20 4d | File type GARMIN MDR 0000000a | 44 52 | 0000000c | 01 | ??? 0000000d | 00 | Set if locked The program allows to reduce the output to the header and a single index section with option --print=<section-number>, e.g. --print=5 will only print section 5 (the cities) Once you understand how to use the program you can try to compare the gmapsupp produced by mkgmap with that from Mapsource to find differences. You'll need a good text file comparer to do this, it should display the two files side by side and highlight the differences, else you'll probably lost ;) On Windows the compare tool in TotalCommander is a good choice. See also https://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/MDR_Subfile_Format I hope you find something, my Garmin Oregon always ignores the index for restaurants (also with gmapsupp from Mapsource) but uses it for e.g. shops or hotels. I did not find a reason for that. Gerd ________________________________________ Von: Manfred Haiduk <manfred.haiduk@freenet.de> Gesendet: Sonntag, 10. März 2019 13:35 An: Gerd Petermann; Development list for mkgmap Betreff: Re: [mkgmap-dev] Possible Indexing Problem I would appreciate to get more details :-) Where can i get this tool ? BTW, it was the first time, since i'm using mkgmap to buld my maps for the device, that the device will stuck while searching. So i assume, something was wrong within the index. Am 10.03.2019 um 13:19 schrieb Gerd Petermann:

Hi Manfred,

we have the display tool to analyse the index, but it will fail on a huge index as it has a hard coded limit of 50 tiles. However you should be able to display (convert to text) the basic structure with the tool and maybe that will help to find out what's wrong. If you are interested I can post more details.

Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Manfred Haiduk <manfred.haiduk@freenet.de> Gesendet: Sonntag, 10. März 2019 12:57 An: Development list for mkgmap Betreff: [mkgmap-dev] Possible Indexing Problem

Hi all

last week i was playing around building new maps with mkgmap 4282 and the default style. Building smaller maps, i.e Nordrhein Westfalen, i don't see any problems but the last map i tried out was complete germany. And now it seems, that my device (GPSMAP 276Cx) will stuck while searching POIs or Adresses. Today i changed the image to be load onto the device and created it from MapSource instead the one build by mkgmap. The functionality is better, but even not 100%. My question for now is, is there a possibility to extract the index data out of the img File to check it on the PC and eventually modify the data ?

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