[mkgmap-dev] Adaptions in style (needed to make good use of) for overview2 branch

Tue May 7 18:44:46 BST 2013

So - I've played around a bit - just rendering Europe for right now - 
actually I would suggest the following (needs some adaptations in the 
lines/poi file though):
levels = 0:24, 1:22, 2:20, 3:18

overview-levels = 4:17, 5:16, 6:15, 7:14, 8:12....
This should give quite sensible map detail for European countries, or 
Europe as a continent - without getting near to crash the overview map, 
because it 's getting too big.
I'm unsure whether we should add a completly empty 9:11 or 9:10 so that 
when zooming out superfar, the map get's blank instead of a pixel mashup...

We definitely do need resolutions 14 and 12 in the overview map. They 
help tremendously when opening big maps in orientation - without the 
dreaded setting of details to max setting. As the speed of drawing is 
now very fast compared to before, resolution 14 and 12 with data do make 
lot of sense!

Level 8 should only contain capitals and country borders.

Here are some adpation proposals for *points file* - add this before any 
other POI - due to continue other pois will still be included:

(place=capitol | place=capital)    & population > 999999 & name=*  {set 
cityxx=yes} [0x0100 resolution 12 continue with_actions ]
place=city & population > 799999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0200 resolution 14 continue with_actions ]
place=city & population > 399999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0300 resolution 15 continue with_actions ]
place=city & population > 299999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0400 resolution 16 continue with_actions ]
place=city & population > 199999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0500 resolution 16 continue with_actions ]
place=city & population >  99999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0600 resolution 17 continue with_actions ]
place=city & population >  49999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0700 resolution 17 continue with_actions ]
place=city & population >   9999 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0800 resolution 18 continue with_actions ]

place=city & population >       0 & cityxx!=yes & name=*  {set 
cityxx=yes} [0x0800 resolution 18 continue with_actions ]
place=city                          & cityxx!=yes & name=* {set 
cityxx=yes} [0x0700 resolution 18 continue with_actions ]

place=town   & population >  69999 & cityxx!=yes  & name=* {set 
cityxx=yes} [0x0600 resolution 17 continue with_actions ]
place=town   & population >  19999 & cityxx!=yes  & name=* {set 
cityxx=yes} [0x0700 resolution 18 continue with_actions ]
place=town   & population >   9999 & cityxx!=yes  & name=* {set 
cityxx=yes} [0x0800 resolution 19 continue with_actions ]
place=town   & population >   4999 & cityxx!=yes  & name=* {set 
cityxx=yes} [0x0900 resolution 19 continue with_actions ]
place=town   & population >    999 & cityxx!=yes  & name=* {set 
cityxx=yes} [0x0a00 resolution 19 continue with_actions ]
place=town   & population >         0 & cityxx!=yes & name=* {set 
cityxx=yes} [0x0b00 resolution 20 continue with_actions ]
place=town                            & cityxx!=yes  & name=* {set 
cityxx=yes} [0x0800 resolution 19 continue with_actions ]

*Relations file:*
route=road & network=e-road { apply { add ref='${ref'; add 
int_ref='${int_ref'}; set network=e-road }

*Lines file*
# (the main routing part needs to be adapted to only start with level 
21) - this here can then start the lines file:
highway=motorway & network=e-road       [0x01 resolution 14-14 continue]
highway=motorway                                        [0x01 resolution 
15-20 continue]
highway=trunk & network=e-road           [0x02 resolution 15-17 continue]
highway=trunk                                                 [0x02 
resolution 18-20 continue]

highway=primary & network=e-road          [0x03 resolution 16-18 continue]
highway=primary                                           [0x03 
resolution 19-20 continue]

highway=secondary & network=e-road     [0x04 resolution 17-18 continue]
highway=secondary                                      [0x04 resolution 
19-20 continue]
# Maybe add main rivers - but how to know what are the biggest rivers 
worldwide? There doesn't exist a relation/network thingy so far AFAIK.
# country borders are already at 12. Dunno if they maybe should stop at 
14 already.

*Polygons file:*
# I would propose to only show sea/land up to resolution 17 by default. 
Maybe forest/wood and other very important big objects also in 17?
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