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Map calibrating: correct values.

 
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Jorppe



Joined: 31 Aug 2010
Posts: 4
Location: Finland

PostPosted: Tue Aug 31, 2010 7:30 pm    Post subject: Map calibrating: correct values. Reply with quote

Hi all...

Darn this calibrating is tricky. Nothing seems to work and soon I am way too exhausted to try anything and as result I ditch this...

Anyways. Gotten maps as gif-pics and then adjusting calibration w OziExp. using TbCutter and TbMapper , too. I think all directories and similar are in order. Only this really bothering me is the correct values, right calibrating points and their order. As result, of course, nothing works...

Can somebody help and confirm me some things:

First: The order what Ozi/Tbcutter combination both accept; Is the correct way to insert and calibrate points starting from bottom left corner clockwise? Only?! Not any other options? And this is also correct way if map area is large (many gifs into one via Photoshop? Not tried yet, now only small, 400x400 tiles)? Or not important? Any order user chooses?

Then most troublesome of them all: the value which to write?!
Which of the following is correct? (They all refer into same point.)
The page is this: http://kansalaisen.karttapaikka.fi/koordinaatit/koordinaatit.html?e=384836&n=6682427&scale=16000&tool=siirra&width=600&height=600&&tool=siirra&lang=fi

language naturally finnish here. Sry.

Koordinaatisto N / lat E / lon
ETRS-TM35FIN -tasokoordinaatit 6682427.000 384836.000
ETRS-TM35 -tasokoordinaatit 6682427.000 384836.000
ETRS-GKn -tasokoordinaatit 6683286.462 25495492.847
ETRS89 maantiet. koord. (~WGS84) 60.26218185 24.91858155
60° 15.731' 24° 55.115'
60° 15' 43.855'' 24° 55' 6.894'''

Which of the above is correct for Ozy/TbCutter/TbMapper/Trekbuddy so that those all understand it? Re-Write somehow? Pretty pls...
-which setting Ozy?
- TbCutter just so "choosy" that it accepts only some value? Which?
- TbMapper; un-relevant? Whatever?
- Trekbuddy: must be something, what?

Also, since haven't a single successful tryout in 3 days I cannot be certain of the atlas/maps order. Pls advice following: If I live someplace and have daily jogs/treks etc and want to follow it w TB and also have another area 300km north where I hunt. And likewise want to follow my movements there. SO: Do I have separate tba's for area 1 and 2. And so separate directories for .maps-sets? Or collect all into same under same tba, although both being totally elsewhere? All maps from same (accurate) webpage as above, in 1:16 000.

lengthy post. Sorry that. But too troublesome problems. Any finn here with functioning Trekbuddy? Or elsewhere knowledge to help me?

= Jorppe =

- Damn my pasting did not go properly, values in following attachment, too. Easier to read.

Ps cannot give any "hurrah" as yet. Otherwise seems good, hence the fierce work to get it operating...



Coordinates.txt
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Same coordinate-values as in above post.

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kruch
Site Admin


Joined: 02 Jul 2006
Posts: 5662

PostPosted: Wed Sep 01, 2010 1:32 pm    Post subject: Reply with quote

Hi,

* in Ozi, the order of calibration points does not matter
* TbCutter does not modify calibration file, it just copies it to the output directory

After a few minutes of chaotic clicking at kansalaisen.karttapaikka.fi (I do not really understand how to use those controls), I got a tile which I tried to calibrate in OziE, see screenshots.

I think you could use lat-lon coordinates in DD MM SS.SSS form, but grid coordinates (easting, northing) are probaly more natural. I found projection setup params for example here: www.maanmittauslaitos.fi/popup.asp?id=0&docid=2507



fin_ozi2.png
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Jorppe



Joined: 31 Aug 2010
Posts: 4
Location: Finland

PostPosted: Thu Sep 02, 2010 7:19 am    Post subject: Solved and now working... Reply with quote

Hellos.

Did hours work experimenting this and that. Now in working order, at least for 1 trial-run and it got every corner right and so I think I succeeded with calibrating correctly.

Used this: 60° 15' 43.855'' - 24° 55' 6.894''' (the latest form in my previous posting). Only did some re-writing. I.e: removed degree-marking and others.
So the reading was as You noted, too. 60 deg 15 43.855 etc.

Anyways, very very nice! Thnx a lot for Your work! Some notes though, I need to "wake up" GPS using GoogleMaps or Nokia OviMaps. As I try starting TB, it does not contact satellites without initial "push". Do not know what gives, but I manage. And battery-consumption is quite high. I try fiddling with settings if I can manage something to correct that.

Otherwise, did ddl those tiles from earlier link as 1:16000 and compiled a huge (100cmx100cm) map with Photoshop and calibrated this etc... As wrote, with success...

Rgds, Jorppe Surprised
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