[Digikam-devel] [Bug 111560] Be able to locate photos on a map

[Gilles Caulier]

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http://bugs.kde.org/show_bug.cgi?id=111560         




------- Additional Comments From caulier.gilles free fr  2006-03-05 22:36 -------
ok look this screenshot :

http://digikam3rdparty.free.fr/Screenshots/GPSsidebartab.png

This is a first implementation of GPS sidebar tab on my computer.
It's based on Kontact GPS map widget. It's simple and i have planed to use a more detailled map, displayed using a Scroolview.

Like i'm not familiarized with GPS, i have the little problem :

The lat/long data from Exif are in deg/min/sec. I need to convert it to UTM decimal value to use an external global map service. In my code the web service  www.mapquest.com is used to display a detailled map via konqueror when you use the "More Info" button.

I need an algorithm to convert it. The any source code that i have found are listed below :

http://www.gpsy.com/gpsinfo/geotoutm/
http://www.data.scec.org/ftp/LARSE/ll2UTM.c

The second link seen to be the most easy to use, but i'm not sure. And i need to have any info about how to use properly the algorithm, especially with "zone" and "ll2utm_flag", and "ispher" parameters used by this method :

sub_ll2utm(xin,yin,direction_flag,zone,spher,xout,yout)

If anybody can guide me. Thanks in advance.

Gilles Caulier
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Looks great.

Unfortunately don't know about algorithms to convert data. Thought
something will be in KStars but looks they use degrees also internally.
OTOH how they place items on map with that coordinates?

Agree. Editor of GPS info is less important. Even I suggested it, maybe
scratch idea completely? In the long run even cheap cameras should have
something like that. More important is better presentation of where
exactly photo was taken - but it also can wait (even when
calling maps.google.com would be relatively easy).

Another idea: use KStars base (when installed) to display info: "Nearest
known location". It can partially replace precise map.

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