On 07/11/2011 06:44 PM, DB wrote:
> Good evening all,
>
> I've just signed up to the mailing list & hope I'll be able to get some
> help from you! In terms of cartography, I'm pretty much a total
> beginner, although I have been using paper maps for more than 50 years.
>
> OK, so here is my problem:
>
> one of my hobbies(?) is to work as a debriefer at Hot Air Balloon
> Championships. Typically, the organisers provide both paper and
> Oziexplorer maps. As I use Fedora on my laptop, I would like to see if I
> can beat one of the open source cartography apps into doing pretty much
> the same sort of things as Ozi. For the next competition, I have a .jpg
> file of the scanned Luxembourg 1:50000 map. As QLandkarteGT won't accept
> .jpg, I've used GIMP to convert it to a .tif file with no compression. I
> can get this file into the map window by doing edit/create map.
>
> Difficulty number 1: how do I persuade QlandkarteGT to read UTM
> coordinates from the map? I've tried to Georeference the map, but don't
> seem to get anywhere.... If I set map projection to WGS84 & UTM 31 then
> click on grid tool, I can set one cross point, distance to 2000 (grid
> lines are 2Km apart), click on OK. Wait ages! Then I get thousands of
> little orange balloons which don't seem to tie up with anything... (BTW,
> until 2 weeks ago, I never heard of "georeferencing"....)
>
> I tried the online help pages but they don't appear to go into this kind
> of detail - at least, I couldn't find anything!
>
> Hope someone will be able to give me a push in the right direction!
>
> Dave

OK!!!  I seem to have half solved my problem - there was no indication 
(that I found) indicating that after hitting "go on" & it getting to 
"finished" that I had to load the newly made map!  My assumption was 
that "it would do it itself"!!  Ho hum, learn something everyday!

BUT..... there now comes a 2nd problem:
Luxembourg is a (cartographically) interesting country - the 6 deg East 
line runs up the middle of the map, so Western half is UTM31, Eastern is 
UTM32.  New question: how do I get QLandkarteGT to recognise this fact? 
  It seems to continue as if the whole map was UTM31.

As ever, thanks for all the great things you've produced, and many many 
thanks for any help!

Dave


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