On Monday, 05 August 2013, at 22:17:53 +0000,
testlelelala wrote:
> Hi Jose, it's been a long time but I'm with the same questions, take a look
> at this post about gmp headers etc...
> http://www.noeman.org/gsm/creating-maps/302614-convert-garmin-img-pseudo-nt-
> non-nt-i-know-its-possible-but-how.html.
> Only the headers are changed all other info remain intact!!!
>
Hi testlelelala, good to know someone better skilled and much more
dedicated than me to that was able to make my guess into reality.
It looks like things were as I supposed / guessed / found out, and at least
those quasi-NT Garmin maps generated with commonly available tools are
little else than normal Garmin subfiles packed into a GMP header
(subfile), and the resulting subfile the one and only subfile being part of
the .IMG file being distributed. Those files look like the following:
gmt v0.8.143.714b CC BY-SA (C) 2011-2013 AP www.gmaptool.eu
Input file: 50250484.IMG.
File: 50250484.IMG, length 2342912
Header: 30.04.2012 16:36:27, DSKIMG, XOR 00, V 0.00, Ms 0
Mapset: 0484 BUITRAGO DEL LO
fat: 1000h - 1200h - 2000h, block 2048
maps: 1, sub-files 1
Sub-file fat length
50250484 GMP 1200h 2333666
GMP: TRE RGN LBL NET NOD
map 2fec2f4 (50250484)
date 25.04.2012 22:23:46
priority 31, parameters 1 3 17 13
levels [14,15,18,20,21,23,24], zoom [86,5,4,3,2,1,0]
N: 40.999925, S: 40.833199, W: -3.854077, E: -3.520689
..MapTk 3.2
CP 1252, Western European
Map length s-f CP prio PID FID name
50250484 NT 2333666 1 1252 31
However, as I can't manage to get GMapTool to split the IMG file into the
subfiles contained in the GMP subfile, I can't test your approach with
these particular maps, which may or may not include further changes.
In any case, the map authors seemed to have good reason for making the maps
not easily "reusable", and so I will probably not look into this a lot more
in the future.
Cheers.
--
Jose Luis Domingo Lopez
Linux Registered User #189436, Linux Ubuntu 12.04.2 LTS (3.2.0-48-generic-pae)
------------------------------------------------------------------------------
Get 100% visibility into Java/.NET code with AppDynamics Lite!
It's a free troubleshooting tool designed for production.
Get down to code-level detail for bottlenecks, with <2% overhead.
Download for free and get started troubleshooting in minutes.
http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk
_______________________________________________
Qlandkartegt-users mailing list
Qlandkartegt-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/qlandkartegt-users
