[mkgmap-dev] Commit: r1198: Merge in the sea polygon patch from

Wed Sep 30 11:42:27 BST 2009

>From: Christian Gawron 
>can you check if
>- the cut coastline segments really extend to the tile borders

I am not quite sure how to confirm this, but it is cut from an area that
works fine with sea poly (therefore I asume the original coastline is
not broken), by splitter with default overlap. And when I view all 4
tiles together in gpsmapedit I can see no breaks at the borders. I tried
to view the files in JOSM, but it is to big for JOSM.

>- the bounding box of the tiles is stated correctly in the osm files?
 The bounds in the osm files difers slightly from the areas.list
coordinates
 See at the bottom of this mail.

>My first guess is that some part of the coastline is missing - I still 
>have no good solution how to handle incomplete shoreline segments.

The funny thing is that I make the same area in one tile, and it works
beautifully, (except for the spurious lines which I am confident you
will fix shortly ;) but splitting into tiles it goes awry. Therefore I
thought it might rather be a splitting / merging problem, than an
originally broken coastline. I use --ignore-osm-bounds, could that
mangle things? I also lately experience routing failure over tile
boundaries, and trying with mkgmap 1243 my map failed to make last
night. I am still trying to pinpoint the problem and differences in my
own approach. If everyone else can still route over tiles, I must be
doing something wrong?

>If this is not the case and you can provide me a download link for the 
>tiles, I can check what the problem is.

I don't know how-
I even tried to e-mail it but it is too large (57 Mb compressed)
Hints?

<bounds minlat='-35.28900861740112' minlon='12.999980449676514'
maxlat='-18.999996185302734' maxlon='36.00000858306885'/>
# List of areas (split from GeoFabrik africa download)
010000000: -1644587,605843 to -885464,1677722#       : -35.289,12.99998
to -19,36

<bounds minlat='-35.244140625' minlon='17.0947265625'
maxlat='-30.849609375' maxlon='25.0048828125'/>
<bounds minlat='-30.849609375' minlon='12.9638671875'
maxlat='-18.984375' maxlon='25.0048828125'/>
<bounds minlat='-34.453125' minlon='25.0048828125'
maxlat='-28.037109375' maxlon='33.0908203125'/>
<bounds minlat='-28.037109375' minlon='25.0048828125'
maxlat='-18.984375' maxlon='35.9033203125'/>
# List of areas (split with default overlap)
01000001: -1642496,796672 to -1437696,1165312 #  ZA-Cape Town     :
-35.244141,17.094727 to -30.849609,25.004883
01000002: -1437696,604160 to -884736,1165312   #   NA-Windhoek    :
-30.849609,12.963867 to -18.984375,25.004883
01000003: -1605632,1165312 to -1306624,1542144  # ZA-Durban      :
-34.453125,25.004883 to -28.037109,33.090820
01000004: -1306624,1165312 to -884736,1673216  #  ZA-Johannesburg    :
-28.037109,25.004883 to -18.984375,35.903320
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