[mkgmap-dev] use of --mdr7-del can break address search/street search
From Gerd Petermann gpetermann_muenchen at hotmail.com on Fri Jan 21 10:55:51 GMT 2022
Hi Ticker,
here are the requested files.
I think the numbers after s= are simply increase for each entry which refers to the same ref.
A larger extract of transalpin MdrDisplay output for those MDR7 entries with s > 0:
| | | Record 10
000002fe | 000036 | 01 | 1 map number
000002ff | 000037 | 80 05 80 | Pointer back into LBL: 000580
00000302 | 00003a | 00 | name offset 0
00000303 | 00003b | 04 | R sort seq p=0 s=1
| | |
| | | Record 11
00000304 | 00003c | 01 | 1 map number
00000305 | 00003d | 4d 02 80 | Pointer back into LBL: 00024d
00000308 | 000040 | 00 | name offset 0
00000309 | 000041 | 08 | R sort seq p=0 s=2
| | |
| | | Record 12
0000030a | 000042 | 01 | 1 map number
0000030b | 000043 | 56 05 80 | Pointer back into LBL: 000556
0000030e | 000046 | 00 | name offset 0
0000030f | 000047 | 0c | R sort seq p=0 s=3
| | |
| | | Record 13
00000310 | 000048 | 01 | 1 map number
00000311 | 000049 | 60 02 80 | Pointer back into LBL: 000260
00000314 | 00004c | 00 | name offset 0
00000315 | 00004d | 10 | R sort seq p=0 s=4
| | |
| | | Record 14
00000316 | 00004e | 01 | 1 map number
00000317 | 00004f | 07 06 80 | Pointer back into LBL: 000607
0000031a | 000052 | 00 | name offset 0
0000031b | 000053 | 14 | R sort seq p=0 s=5
| | |
| | | Record 15
0000031c | 000054 | 01 | 1 map number
0000031d | 000055 | 84 04 80 | Pointer back into LBL: 000484
00000320 | 000058 | 00 | name offset 0
00000321 | 000059 | 18 | R sort seq p=0 s=6
Here is an extract of the Topo Adria map:
001a1cd7 | 0023c0 | 13 | 19 map number
001a1cd8 | 0023c1 | a7 0f 80 | Pointer back into LBL: 000fa7
001a1cdb | 0023c4 | 15 01 0f | Pointer to string: 2184
001a1cde | 0023c7 | 00 | name offset 0
001a1cdf | 0023c8 | 01 00 00 | N sort seq p=0 s=0
| | |
| | | Record 834
001a1ce2 | 0023cb | 13 | 19 map number
001a1ce3 | 0023cc | 86 18 80 | Pointer back into LBL: 001886
001a1ce6 | 0023cf | 1b 01 0f | Pointer to string: 2184 MEDVEDICKA
001a1ce9 | 0023d2 | 00 | name offset 0
001a1cea | 0023d3 | 00 20 00 | R sort seq p=0 s=1
| | |
| | | Record 835
001a1ced | 0023d6 | 13 | 19 map number
001a1cee | 0023d7 | d4 1a 80 | Pointer back into LBL: 001ad4
001a1cf1 | 0023da | 28 01 0f | Pointer to string: 2185
001a1cf4 | 0023dd | 00 | name offset 0
001a1cf5 | 0023de | 01 00 00 | N sort seq p=0 s=0
| | |
| | | Record 836
001a1cf8 | 0023e1 | 13 | 19 map number
001a1cf9 | 0023e2 | 14 19 80 | Pointer back into LBL: 001914
001a1cfc | 0023e5 | 2e 01 0f | Pointer to string: 2185 CRNEC
001a1cff | 0023e8 | 00 | name offset 0
001a1d00 | 0023e9 | 00 20 00 | R sort seq p=0 s=1
| | |
| | | Record 837
001a1d03 | 0023ec | 13 | 19 map number
001a1d04 | 0023ed | 6a 18 80 | Pointer back into LBL: 00186a
001a1d07 | 0023f0 | 38 01 0f | Pointer to string: 2185 DRAGANCI
001a1d0a | 0023f3 | 00 | name offset 0
001a1d0b | 0023f4 | 00 40 00 | R sort seq p=0 s=2
| | |
| | | Record 838
001a1d0e | 0023f7 | 13 | 19 map number
001a1d0f | 0023f8 | 97 18 80 | Pointer back into LBL: 001897
001a1d12 | 0023fb | 44 01 0f | Pointer to string: 2185 DRENOVICA
001a1d15 | 0023fe | 00 | name offset 0
001a1d16 | 0023ff | 00 60 00 | R sort seq p=0 s=3
| | |
| | | Record 839
001a1d19 | 002402 | 13 | 19 map number
001a1d1a | 002403 | 03 19 80 | Pointer back into LBL: 001903
001a1d1d | 002406 | 50 01 0f | Pointer to string: 2185 MEDVEDICKA
001a1d20 | 002409 | 00 | name offset 0
001a1d21 | 00240a | 00 80 00 | R sort seq p=0 s=4
| | |
| | | Record 840
001a1d24 | 00240d | 13 | 19 map number
001a1d25 | 00240e | 20 19 80 | Pointer back into LBL: 001920
001a1d28 | 002411 | 5d 01 0f | Pointer to string: 2185 MOLVICE
001a1d2b | 002414 | 00 | name offset 0
001a1d2c | 002415 | 00 a0 00 | R sort seq p=0 s=5
| | |
| | | Record 841
001a1d2f | 002418 | 13 | 19 map number
001a1d30 | 002419 | f3 18 80 | Pointer back into LBL: 0018f3
001a1d33 | 00241c | 69 01 0f | Pointer to string: 2185 PAVLJANCI
001a1d36 | 00241f | 00 | name offset 0
001a1d37 | 002420 | 00 c0 00 | R sort seq p=0 s=6
| | |
| | | Record 842
001a1d3a | 002423 | 13 | 19 map number
001a1d3b | 002424 | 79 18 80 | Pointer back into LBL: 001879
001a1d3e | 002427 | 76 01 0f | Pointer to string: 2185 SIRINE
001a1d41 | 00242a | 00 | name offset 0
001a1d42 | 00242b | 00 e0 00 | R sort seq p=0 s=7
...
Gerd
________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
Gesendet: Freitag, 21. Januar 2022 11:11
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] use of --mdr7-del can break address search/street search
Hi Gerd
The extraInfo byte(s) could contain than
1bit sort flag,
0-4bits prefix.
0-4bits suffix.
Magic 0x1e00 says how many bits the prefix is, so can find the suffix.
Maybe the next 4 bits 0x1e000 say how big the suffix is so can get more
info, which is the 6 you are seeing.
What is the magic for the mdr7s of the 2 maps you mention; can you do
the MdrSummary
Ticker
On Fri, 2022-01-21 at 08:54 +0000, gpetermann_muenchen at hotmail.com
wrote:
> Hi Ticker,
>
> don't worry. My current thinking is that the numbers s= displayed in
> the mdr7 section by MdrDisplay may somehow point into Mdr32/33.
> I am looking at the transalpin demo map.
> I see a few entries in 32/33 for road names which appear after a road
> ref. Those have a value > 0 in s=
> Extract from mdr7:
> 0000031c | 000054 | 01 | 1 map number
> 0000031d | 000055 | 84 04 80 | Pointer back into LBL:
> 000484
> 00000320 | 000058 | 00 | name offset 0
> 00000321 | 000059 | 18 | R sort seq p=0 s=6
> Extract from NetDisplay for the road with label offset 484:
> 00002e33 | 002dcf | 70 05 80 | Label offset: 570
> (B186 DORFSTRAßE)
> ...
> 00002eb8 | 002e54 | 80 05 80 | Label offset: 580
> (B186 GEWERBEGEBIET SÖLDEN)
> ....
> 00002ef3 | 002e8f | 4d 02 80 | Label offset: 24d
> (B186 GURGLERSTRAßE)
> ...
> 00002f43 | 002edf | 56 05 80 | Label offset: 556
> (B186 KIRCHENKAR)
> ...
> 00002f59 | 002ef5 | 60 02 80 | Label offset: 260
> (B186 ÖTZTAL-BUNDESSTRAßE)
> ...
> 00003013 | 002faf | 07 06 80 | Label offset: 607
> (B186 ÖTZTALSTRAßE)
> ...
> 0000302c | 002fc8 | 84 04 80 | Label offset: 484
> (B186 TIMMELSJOCHSTRAßE)
>
>
> Problem: There are more strings in mdr32 and I have no idea how
> exactly the numbers are used.
> Entries in mdr32/33 are sorted alphabetically. In this map set they
> contain the words after ref B186
> and all entries in MDR7 with s > 0 refer to those road labels.
> Also it seems that values > 0 in s= only appear with "name offset 0"
> mdr32:
> --------- MDR 32 (pointers to mdr33) --------------------------------
> -----------
> 00002781 | 000000 | 00 00 | Offset in mdr33: 0
> 00002783 | 000002 | 0c 00 | Offset in mdr33: 12
> | | | mdr33 string:
> BUNDESSTRAßE
> 00002785 | 000004 | 16 00 | Offset in mdr33: 22
> | | | mdr33 string:
> DORFSTRAßE
> 00002787 | 000006 | 23 00 | Offset in mdr33: 35
> | | | mdr33 string:
> GEWERBEGEBIET
> 00002789 | 000008 | 30 00 | Offset in mdr33: 48
> | | | mdr33 string:
> GURGLERSTRAßE
> 0000278b | 00000a | 3a 00 | Offset in mdr33: 58
> | | | mdr33 string:
> KIRCHENKAR
> 0000278d | 00000c | 40 00 | Offset in mdr33: 64
> | | | mdr33 string: OTZTAL
> 0000278f | 00000e | 4c 00 | Offset in mdr33: 76
> | | | mdr33 string:
> OTZTALSTRAßE
> 00002791 | 000010 | 52 00 | Offset in mdr33: 82
> | | | mdr33 string: SOLDEN
> | | | mdr33 string:
> TIMMELSJOCHSTRAßE
>
> No idea how the data is used. My Oregon cannot find any address
> and shows garbage for the region name when I install the
> gmapsupp.img.
>
> The Adria Topo map also seems to show s= values > 0 only for labels
> which contain
> a ref.
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Donnerstag, 20. Januar 2022 23:00
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] use of --mdr7-del can
> break address search/street search
>
> Hi Gerd
>
> I got confused between Mdr15 (full string for gmapi) and Mdr17
> (partial
> string for device), so what I wrote here makes little sense.
>
> I need to think about it more. Sorry for wasting your time.
>
> Ticker
>
> On Thu, 2022-01-20 at 20:42 +0000, Ticker Berkin wrote:
> > Hi Gerd
> >
> > It could be trying to represent something as follows:
> >
> > For a device, there is no MDR17 string, so no possibility of using
> > this
> > to have index entries for parts of the street name.
> >
> > A street LBL can have any number of prefix / suffix chars.
> > Multiple mdr7 repeat records can be generated for the same label,
> > each
> > specifying a prefix and suffix marker count/index to indicate that
> > part
> > of the label to be searchable.
> >
> > MdrDisplay shows these prefix/suffix indexes
> >
> > Ticker
> >
> > On Thu, 2022-01-20 at 20:02 +0000, Gerd Petermann wrote:
> > > Hi Ticker,
> > >
> > > I also wondered why these lines still exist:
> > > int bitsPrefix = (maxPrefixCount == 0) ?
> > > 0
> > > :
> > > Integer.numberOfTrailingZeros(Integer.highestOneBit(maxPrefixCoun
> > > t)
> > > )
> > > + 1;
> > > int bitsSuffix = (maxSuffixCount == 0) ?
> > > 0
> > > :
> > > Integer.numberOfTrailingZeros(Integer.highestOneBit(maxSuffixCoun
> > > t)
> > > )
> > > + 1;
> > >
> > > The two counters are never increased in the current code. In
> > > r3968
> > > there's some commented code which used them.
> > >
> > > Gerd
> > >
> > > ________________________________________
> > > Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im
> > > Auftrag
> > > von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> > > Gesendet: Donnerstag, 20. Januar 2022 19:22
> > > An: mkgmap-dev at lists.mkgmap.org.uk
> > > Betreff: Re: [mkgmap-dev] use of --mdr7-del can
> > > break address search/street search
> > >
> > > Hi Gerd
> > >
> > > I'm struggling to understand the possibilities of Mdr7 (ordering,
> > > partialInfo, nameOffset, string different to label, etc etc)
> > >
> > > My initial thought about nameOffset was that it was for skipping
> > > over
> > > the shield prefix or text before the 0x1b marker.
> > >
> > > partialInfo is very strange; it seems to be used for part of the
> > > rr
> > > flag but the code suggests it also held counts of the number of
> > > prefixes and suffixes.
> > >
> > > Sorry - not being much use here.
> > >
> > > Ticker
> > >
> > >
> > > _______________________________________________
> > > mkgmap-dev mailing list
> > > mkgmap-dev at lists.mkgmap.org.uk
> > > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> > > _______________________________________________
> > > mkgmap-dev mailing list
> > > mkgmap-dev at lists.mkgmap.org.uk
> > > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> >
> >
> > _______________________________________________
> > mkgmap-dev mailing list
> > mkgmap-dev at lists.mkgmap.org.uk
> > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>
>
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