Hi Ticker,
do you have a link for me? None of the methods to store the tree that I found
would produce such a data structure.
This is what I found so far:
https://web.stanford.edu/class/archive/cs/cs106b/cs106b.1208/assignments/assign6/warmup
Hi Gerd
This could just be the way the tree has been flattened, with the data
for longest sequences at the end, just happening to be byte aligned and
without intervening bit markers to represent the tree because they have
occurred already.
regarding the 00s, maybe this a an escape
Hii Ticker,
reg. MDR16: When I print the encoded characters which require 8 or more bits in
the order of the Huffman tree
they build a sequence which appears at the end of MDR 16 (last 60 bytes or so).
Those chars which are encoded with fewer bits are still a mistery to me.
Gerd
Hi Ticker,
it's almost impossible to guess when there is only one entry in MDR 30/31 and
only one occurence of the code
"".
I used '#' in my debug code to mark an "unknown" char.
A possible meaning could be that 30/31 are common prefixes and 32/33 are common
suffixes in
Hi Gerd
Do you think there might be some form of escape sequence that is
followed by a ref to the clear road names in Mdr 30..33. I noticed when
looking at MapInstall manipulated Mdr that the '#' sort got changed.
Ticker
On Wed, 2021-12-15 at 11:13 +, Gerd Petermann wrote:
> Hi Ticker,
>
>
Hi Ticker,
this is what I have so far. The non-printable characters 0x01..0x04 are
probably not correct.
Note the special case with the last sequence. It only occurs once in the
index and may as well be an error in the data.
My code doesn't detect any unknown codes, so I think MDR16 must somehow
Hi Ticker,
here it it. Don't worry too much about the turkish map.
I think it is full of errors, at least that was my impression
when I played with it on my Oregon.
Gerd
Von: mkgmap-dev im Auftrag von Ticker
Berkin
Gesendet: Mittwoch, 15. Dezember
Hi Gerd
I was wondering if you have and can send me the SRT subfile from the
TOPO map you are looking at for the compression. In the Turkish map the
bits that seemed to be for selecting the correct variation of each
expansion character made little sense.
Thanks
Ticker
