[mkgmap-dev] Please test branch NET-no-NOD

Tue Oct 22 17:33:20 BST 2019

Hi Gerd

These are with default style.

mkgmap-NET-no-NOD-r4304 --x-check-routing-island-len=700

SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210002.osm.pbf:
check for routing islands found 38 islands
SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210002.osm.pbf:
routing island check took 689 ms
SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210001.osm.pbf:
check for routing islands found 554 islands
SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210001.osm.pbf:
routing island check took 8279 ms

Total time taken: 1 minute 12 seconds

gmapsupp.img 15126528 bytes
Block size: 2048
        .       22016
MAKEGMAP.MPS    138
00007421.MDR    728896
000MYTYP.TYP    1580
74210001.RGN    5870951
74210001.TRE    45927
74210001.LBL    624175
74210001.NET    1347117
74210001.NOD    2384384
74210002.RGN    2120704
74210002.TRE    17330
74210002.LBL    229542
74210002.NET    592062
74210002.NOD    1124864
00007421.SRT    912

With r4295:

Total time taken: 1 minute 3 seconds

gmapsupp.img 15943680 bytes
Block size: 2048
        .       23040
MAKEGMAP.MPS    138
00007421.MDR    728896
000MYTYP.TYP    1580
74210001.RGN    5870951
74210001.TRE    45927
74210001.LBL    624175
74210001.NET    1354678
74210001.NOD    2975539
74210002.RGN    2120704
74210002.TRE    17330
74210002.LBL    229542
74210002.NET    593443
74210002.NOD    1343157
00007421.SRT    912

Ticker

On Tue, 2019-10-22 at 16:02 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> strange, in my tests the test for routing islands performed in < 50
> ms. So, there seems to be a special case.
> Also, I did not see that big effect on img siz.
> Please can you test with default style for comparison?
> 
> Gerd
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Dienstag, 22. Oktober 2019 17:51
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Please test branch NET-no-NOD
> 
> Hi Gerd
> 
> Testing mkgmap-NET-no-NOD-r4304 with 2 tile local area with option
> --x-check-routing-island-len=700
> 
> Some build statistics:
> 
> SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210002.osm.pbf:
> check for routing islands found 293 islands
> SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210002.osm.pbf:
> routing island check took 5252 ms
> SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210001.osm.pbf:
> check for routing islands found 2820 islands
> SEVE: uk.me.parabola.imgfmt.app.net.RoadNetwork  74210001.osm.pbf:
> routing island check took 45755 ms
> 
> Total time taken: 1 minute 53 seconds
> gmapsupp.img 13719552 bytes
> block size: 2048
>         .       20992
> MAKEGMAP.MPS    138
> 00007421.MDR    1121108
> 000MYTYP.TYP    1580
> 74210001.RGN    3802657
> 74210001.TRE    17874
> 74210001.LBL    758810
> 74210001.NET    1536856
> 74210001.NOD    2556416
> 74210002.RGN    1645275
> 74210002.TRE    8820
> 74210002.LBL    268782
> 74210002.NET    718899
> 74210002.NOD    1241600
> 00007421.SRT    912
> 
> For comparison, testing with r4295 (I get similar figures for
> trunk+):
> 
> Total time taken: 1 minute 8 seconds
> gmapsupp.img 14710784 bytes
> Block size: 2048
>         .       22016
> MAKEGMAP.MPS    138
> 00007421.MDR    1121108
> 000MYTYP.TYP    1580
> 74210001.RGN    3802683
> 74210001.TRE    17874
> 74210001.LBL    758810
> 74210001.NET    1562592
> 74210001.NOD    3285327
> 74210002.RGN    1645275
> 74210002.TRE    8820
> 74210002.LBL    268782
> 74210002.NET    722291
> 74210002.NOD    1477491
> 00007421.SRT    912
> 
> So, for my test case, with my style, which probably creates quite a
> few
> more isolated networks than the default style:
> 
> It adds quite a lot of processing time (increased by 66%)
> 
> Reduces the NOD size significantly (22%) and full gmapsupp.img by 6%.
> 
> It fixes a lot of "Route calculation errors" where the nearest road
> to
> the start/end point is an isolated network. However the behaviour of
> this changes in a way not apparent to the map user if what should
> have
> been an isolated network overlaps tiles.
> 
> I vote for keeping something like this provided the routing-island
> detection only happens of the length option is specified (needs a
> better name than --x-check-routing-island-len)
> 
> The unconnected road handling should be moved out of StyledConverter
> and handled as part of the length controlled general logic.
> 
> Ticker
> 
> 
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