[mkgmap-dev] Overview map in gmapsupp.img?

Mon Feb 23 12:06:15 GMT 2015

Hi Gerd,

 >I see no reason why we should not add the overview map
 >to the gmapsupp if that is what the user wants
 >and the device is working fine with it.

There is no need to add overview to gmapsupp. It can be copied as a 
separate file to GPS with the same result. Or user can merge overview 
map and detailed maps to a single gmapsupp:
mkgmap.jar --gmapsupp --index 1*.img overview.img

The second version adds data from overview map into index search, which 
cause duplicated search results, see attached picture. I think both 
version will show duplicated cities when performing search near current 
position.

I haven't checked thoroughly, but I have noticed a delay, when switching 
from detailed map to overview in GPS. I think single map with more 
levels could be faster.

Summarizing: in my opinion this is not a proper way to create a map. If 
you add direct support for this procedure to mkgmap, you would give some 
kind of recommendation for it. And since it can be easily done without 
any changes to mkgmap, I would rather leave it as it is.

-- 
Best regards,
Andrzej
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ovw.png
Type: image/png
Size: 6397 bytes
Desc: not available
URL: <http://www.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20150223/b08c07db/attachment.png>