Sub Descriptions in gmapsupps
Hi On my Oregon 600 Garmin maps show a title and a subtitle in the 'configure maps' setup ie Digital Globe (title) Demo JNX (subtitle) So far I've not been able to create 'sub descriptions' using any of the available commands However, interestingly , I recently discovered that using Mapinstall I can create subtitles but its messy. I've done some testing 1) using the following command I have create a gmapsup and installed the same map on Basecamp. --mapname=11223344 --family-id=6088 --country-name=my_country --series-name="map1" --family-name="map2" --overview-mapname="map3" --description="map4" --remove-short-arcs --style-file=styles --style=june2014 --output-dir=C:\a_upl2vb6\temp --transparent --tdbfile --draw-priority=10 --gmapsupp C:\Users\me\Desktop\map.osm 2) On the Oregon the gmapsup (mkgmap.img) only produces: 'map4' as a main title 3) installing the map (mapinstall.img) using mapinstall I get map1 ( as title) map2 ( as subtitle) 4) looking at both imgs I noticed some interesting points: a) MPS block 0x46 seems to contain the subtitle (in both imgs) b) the mapinstall img contains an extra 0x50 block prior to 0x46 I can't as yet tell whether a) this block present in tdb files must also be included in a gmapsupp? b) There is some additional flag that is set? c) or both? Have included small osm & gmapsup files in www.pinns.co.uk/osm/253/gmapsupps.zip regards Nick -- View this message in context: http://gis.19327.n5.nabble.com/Sub-Descriptions-in-gmapsupps-tp5810175.html Sent from the Mkgmap Development mailing list archive at Nabble.com.
Hi Nick, MPS record 0x46 ('F') contains family name and FID/PID values. Record 0x50 ('P') contains FID/PID values and some flags. 'P' could mean "Product". Since Mapsource an MapInstall add both records I would do the same, but maybe 'P' is not obligatory. Or it is some depreciated form? The name "mp4" is placed in img header. In my opinion it should be repeated in MPS subfile as a record 'V'. I think Mapsorce and Mapinstall do that. Mapsource allows to set this name, when creating gmapsupp.img. Default value are names tiles used for gmapsupp. Mapinstall uses always default name. You can modify names in gmapsupp.img using some programs like GMapTool. -- Best regards, Andrzej
Hi Andrzej Thanks for that. I've not been able to add to or alter the MPS section as I haven't yet located the pointers to its offset and size unless they are calculated from the other subfile blocks In your great Gmaptool you give the length of the mps block which often seems longer than what it appears to be - perhaps I'm wrong. However, I think you are right there seems to be an issue here -- View this message in context: http://gis.19327.n5.nabble.com/Sub-Descriptions-in-gmapsupps-tp5810175p58102... Sent from the Mkgmap Development mailing list archive at Nabble.com.
Hi
MPS record 0x46 ('F') contains family name and FID/PID values. Record 0x50 ('P') contains FID/PID values and some flags. 'P' could mean "Product".
We have an F record but not a P record. I believe that P is a newer record, as it is not present in gmapsupp produced by early versions of mapsource - or perhaps there is something that has to be present in the input to make it appear.
The name "mp4" is placed in img header. In my opinion it should be repeated in MPS subfile as a record 'V'. I think Mapsorce and Mapinstall do that.
We add a V record, it defaults to the string 'OSM map set'. This can be changed with the mapset-name option (which has to be written as --x-mapset-name='hello world' as it is not in the options file). So I suppose that 'OSM map set' is not appearing and maybe it needs the P record to be present for it to be used? ..Steve
Hi Steve I've done some more research and it seems that there is more to it than simply adding an extra 0x50 block - even copied the mapinstall mps block into the mkgmap.img & adjusted the length of the block & maintaining the fid accordingly The results are still the same : I just get map4 It looks like my original assumption might be right in that some other byte(s) might be set. I've never seen the 'OSM map set' appearing in my Oregon althouygh I can see it in the gmapsupps -- View this message in context: http://gis.19327.n5.nabble.com/Sub-Descriptions-in-gmapsupps-tp5810175p58103... Sent from the Mkgmap Development mailing list archive at Nabble.com.
Hi Nick
I've done some more research and it seems that there is more to it than simply adding an extra 0x50 block - even copied the mapinstall mps block into the mkgmap.img & adjusted the length of the block & maintaining the fid accordingly The results are still the same :
OK interesting. I've found that I can get the subtitle if I set offset 0x0e in the gmapsupp to 1 (and perhaps you need all the other things in mps too - it was the last thing I tried ;) However setting 0xe is problematic in other ways - about displaying in Basecamp if I remember. ..Steve
Hi Steve Changing it to 1 really works ! Brilliant! Now I get a sub description for all my maps ! Also,there doesn't seem to be the need to add an extra 0x50 block in the mps,however 'correct' that might be. I have a feeling mapinstaller uses old coding practices as it insists on typ names being restricted to a maximum of 12 characters. As its a gmapsupp, it shouldn't affect Basecamp? Many thanks for your input. Any chance for it to be implemented? best regards Nick -- View this message in context: http://gis.19327.n5.nabble.com/Sub-Descriptions-in-gmapsupps-tp5810175p58103... Sent from the Mkgmap Development mailing list archive at Nabble.com.
Hi Steve Looks like setting 0e to 1 has the following effect: The main description is taken from the name of the img the subdescription is still defined by --description. This probably explains why some gmapsupps have spaces in their names. I've also noticed 20 and 21 in 0F and various values for 0A other than 7 Nick -- View this message in context: http://gis.19327.n5.nabble.com/Sub-Descriptions-in-gmapsupps-tp5810175p58103... Sent from the Mkgmap Development mailing list archive at Nabble.com.
participants (3)
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Andrzej Popowski -
nwillink -
Steve Ratcliffe