I’ve come across a new tweak on the HeyWhatsThat website.
For those that don’t know it, HeyWhatsThat is a profiling site and very useful for seeing what hills and valleys are in between two points.
In the Testbed site, the author, Michael Kosowsky, has produced a “visibility cloak” – give it a location and how high you are above sea or ground level, and it will show you what the view will be - in itself a really useful trick.
At my request, he has extended the idea to an “up in the air” feature, where you can specify two altitudes and it will draw a line for each, showing at what distance you should be in direct line of sight of aircraft, taking into account the topography and the curvature of the earth.
It’s fascinating to tie this up with your RadarBox polar diagram, and both of these features could be really handy in deciding, for example, whether an external aerial would be worthwhile, and how high it should be by entering different heights above ground level.
It only takes topography into account – it can’t take into account individual trees or buildings which might get in the way, but it’s a really interesting and potentially useful site – give it a go!
PM me if you would like detailed instructions on how to get it to work. (Hint – switch to satellite view to see the “up in the air” lines clearly)
Main site:
http://www.heywhatsthat.com/Testbed site:
http://www.heywhatsthat.com/main-0904.htmlRod
