[mkgmap-dev] splitter r609 released

Tue Jun 29 22:04:45 BST 2021

I found (server) time to run my test again - using splitter v614 - search
limit 1000000
Problem cases in bold. I also added the number of tiles that splitter v602
needed (well on one week older geofabrik extract - but that should not make
such a difference for Norway or South America). I feel 602 with
search-limit 1000000 was producing more consistent results.

"for netherlands use polygon-file - cnt1 = 93 cnt0 = 88"
"for alps do not use polygon-file - cnt1 = 225 cnt0 = 226"
*"for liechtenstein do not use polygon-file - cnt1 = 1 cnt0 = 6" *
*I thought that the new version fixes the splitting if it is not actually
needed.*

"for monaco do not use polygon-file - cnt1 = 1 cnt0 = 2"
"for slovenia do not use polygon-file - cnt1 = 27 cnt0 = 28"
"for ukraine use polygon-file - cnt1 = 62 cnt0 = 61"
*"for norway do not use polygon-file - cnt1 = 129 cnt0 = 168" *
*Big degradation here - with the older splitter it was: "for norway use
polygon-file - cnt1 = 128 cnt0 = 115" (also using 1000000 search limit)*

"for switzerland do not use polygon-file - cnt1 = 29 cnt0 = 30"
"for poland do not use polygon-file - cnt1 = 127 cnt0 = 128"
"for sweden use polygon-file - cnt1 = 60 cnt0 = 54"
"for finland do not use polygon-file - cnt1 = 65 cnt0 = 84"
"for czech-republic use polygon-file - cnt1 = 63 cnt0 = 62"
"for denmark use polygon-file - cnt1 = 33 cnt0 = 32"
"for austria use polygon-file - cnt1 = 56 cnt0 = 54"
"for andorra do not use polygon-file - cnt1 = 1 cnt0 = 4"
"for estonia use polygon-file - cnt1 = 9 cnt0 = 8"
*"for saarland use polygon-file - cnt1 = 4 cnt0 = 0" *
*Seems using a polygon-file no spit at all - however it should still write
the data again out into the newly defined filename.*

"for hamburg do not use polygon-file - cnt1 = 3 cnt0 = 12"
"for hessen do not use polygon-file - cnt1 = 17 cnt0 = 18"
"for bayern do not use polygon-file - cnt1 = 47 cnt0 = 48"
"for berlin do not use polygon-file - cnt1 = 5 cnt0 = 13"
"for australia-oceania use polygon-file - cnt1 = 112 cnt0 = 109"
*"for south-america do not use polygon-file - cnt1 = 335 cnt0 = 463" *
*old splitter "for south-america do not use polygon-file - cnt1 = 337 cnt0
= 339"  (using default search limit)*

"for africa do not use polygon-file - cnt1 = 653 cnt0 = 663"
"for asia use polygon-file - cnt1 = 1697 cnt0 = 1549"
*"for russia use polygon-file - cnt1 = 429 cnt0 = 408" *
*0ld identical*

"for central-america use polygon-file - cnt1 = 60 cnt0 = 58"
"for antarctica use polygon-file - cnt1 = 7 cnt0 = 6"
*"for morocco do not use polygon-file - cnt1 = 19 cnt0 = 27" *
*old identical*

"for congo-democratic-republic do not use polygon-file - cnt1 = 37 cnt0 =
38"
"for mozambique use polygon-file - cnt1 = 24 cnt0 = 23"
"for azerbaijan do not use polygon-file - cnt1 = 3 cnt0 = 4"
"for malaysia-singapore-brunei do not use polygon-file - cnt1 = 16 cnt0 =
17"
"for china use polygon-file - cnt1 = 104 cnt0 = 101"
"for india do not use polygon-file - cnt1 = 109 cnt0 = 112"
"for indonesia do not use polygon-file - cnt1 = 175 cnt0 = 200"
"for japan use polygon-file - cnt1 = 163 cnt0 = 160"
"for philippines do not use polygon-file - cnt1 = 50 cnt0 = 51"
*"for afghanistan do not use polygon-file - cnt1 = 11 cnt0 = 20" *
*old identical *

"for australia use polygon-file - cnt1 = 67 cnt0 = 66"
"for argentina use polygon-file - cnt1 = 31 cnt0 = 27"
"for brazil use polygon-file - cnt1 = 176 cnt0 = 172"
"for chile do not use polygon-file - cnt1 = 31 cnt0 = 33"
"for paraguay use polygon-file - cnt1 = 17 cnt0 = 16"
"for us-midwest do not use polygon-file - cnt1 = 152 cnt0 = 154"
"for us-northeast do not use polygon-file - cnt1 = 109 cnt0 = 110"
"for us-pacific use polygon-file - cnt1 = 20 cnt0 = 18"
"for us-south do not use polygon-file - cnt1 = 259 cnt0 = 261"
"for us-west do not use polygon-file - cnt1 = 224 cnt0 = 227"
"for greenland use polygon-file - cnt1 = 4 cnt0 = 2"
"for mexico use polygon-file - cnt1 = 43 cnt0 = 42"
"for reunion do not use polygon-file - cnt1 = 3 cnt0 = 5"

On Fri, 25 Jun 2021 at 16:51, Gerd Petermann <
GPetermann_muenchen at hotmail.com> wrote:

> Hi all,
>
> I think with r609 there should be no need to use a polygon file. See
> https://www.mkgmap.org.uk/websvn/revision.php?repname=splitter&rev=609
>
> Please let me know when this version produces much worse results compared
> to older releases (using the same options and input) and provide the files
> densities-out.txt and the log.
>
> If you are interested in good splits you should check the splitter log for
> "Solution is not nice. Can't find a better solution"
>
> When this is printed splitter did not find a good split. Expect almost
> empty tiles in this case.
> It is likely that this happens when rather small files are split with a
> polygon and the default resolution. Normal users don't do this, but some
> map providers try to use the same options for very different downloads ...
>
> Gerd
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>

-- 
Felix Hartman - Openmtbmap.org & VeloMap.org
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