Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I wish to use Google Earth to visualise and explore 3D atmospheric density data. In my case it is ionospheric electron density, which is a niche area, but I can imagine this might have been done by someone to display say atmospheric moisture content or pollution levels (or volcanic ash plumes??).

I am new to KML files, but reading over the developer guide it isn't obvious how best to go about this. Would you slice your 3D density data into many 2D layers and use < altitude > elements? Or would it be better to use grid the data into many small cubes and use < polygon >s? Or some other option?

I'm sure this has been done before, but I couldn't find any suitable examples.

share|improve this question
    
What sort of format is your 3D data in? My first thought was Sketch Up, not sure if it would be useful but you can put 3D models of building in with it, so I would think you could put things above ground too. –  eseglem May 20 '13 at 22:06
    
I have a parametrised model describing the 3D density field. I can output this into any required format. –  Bogdanovist May 21 '13 at 12:22
    
It might be useful if you can describe why you want to visualise it? Are you just trying for nice pictures, or are you trying to find "something" over time, or over distance, or over altitude? What is the "something" that your visualisation is aimed to explore? –  BradHards Sep 22 '13 at 23:52
    
You might also consider Nasa Worldwind that is designed for such kind of overlays, as this example of Wifis present: wiki.opennet-initiative.de/wiki/Benutzer:Thm/… –  Mapper Jan 11 at 13:17

1 Answer 1

Something like this:

http://docs.geoserver.org/2.2.4/user/googleearth/features/kmlheighttime.html

But you will have to put this in a geo-database, like postgres.

I've managed something simular, with building geometrie. In the database the geometrie was a multipolygon. In one column I set the height parametervield.

You coupe do the same with pointfeatures and also timeparameter....

My regards and wish you good luck.

Taeke

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.