Bug 310284 - Night on Earth in higher resolution
Summary: Night on Earth in higher resolution
Status: ASSIGNED
Alias: None
Product: marble
Classification: Applications
Component: data (show other bugs)
Version: 1.3 (KDE 4.8)
Platform: Debian testing Linux
: NOR wishlist
Target Milestone: ---
Assignee: marble-bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-11-18 14:05 UTC by ralfgesellensetter
Modified: 2013-08-21 18:34 UTC (History)
2 users (show)

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Description ralfgesellensetter 2012-11-18 14:05:50 UTC
I like the wide range of layers that you can choose in Marble.
As for the night view layer, the current resolution seems like
approx. 5 km per pixel. Is there a chance to get higher
res up to a level when you can distinct major clearways?

Thanks
Ralf

Reproducible: Always

Steps to Reproduce:
This is a wish. Select night level and zoom in to town level.
Actual Results:  
Towns are single blurred spots.

Expected Results:  
Streets can be seen as bright lines.

I read about mapmaker of national geographic, supposedly being
able to render earth at night at higher zoom levels, but failed to confirm.
Comment 1 ralfgesellensetter 2012-11-18 14:11:30 UTC
Similar direction: The temperature maps have currently a fixed class width of 10 centigrades. 
The resulting maps are already good on a global level to both demonstrate the range of temperatures according to latitude and deviations according to maritimity.

But as you zoom in, you will find major Europa in one single colour.

Hence I suggest, either to improve classification to get a more differentiate view (possibly by classes of different width), or to build in a dynamical classification adapted to the shown segment of earth (this would of course mean that the legend had to change dynamically, too, unless you add an option 'global classification'.

What do you think? Worth another wishlist bug?
Comment 2 Dennis Nienhüser 2012-12-16 14:05:13 UTC
A new night theme "Black Marble 2012" is in the works, see http://www.google-melange.com/gci/task/view/google/gci2012/8079205
Comment 3 Dennis Nienhüser 2013-05-22 19:15:24 UTC
SVN commit 1356048 by nienhueser:

Add Earth at Night 2012 map theme.



 M  +10 -0     maps-4.5.xml  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1356048
Comment 4 Dennis Nienhüser 2013-05-22 19:53:30 UTC
I think we could get an ever higher resolution when using the  54k x 27k pixel image from  http://visibleearth.nasa.gov/view.php?id=79765. Guess we can't handle it with tilecreator though but need something like gdal (maybe gdal2tiles.py could help).