A friend said to me on Facebook that she is 4000km away. So I want to try to guess where she is.
How can I find which countries are a given distance from my current location?
Thanks to Simon Woods' advises it should now be correct.
Taking the OP's informations:
Of course, the same can be done with your own location:
Checking which countries are exactly on the 4000 km border (and thanks to rm-rf answer here):
Countries lying on the 4000 km border:
Countries inside the 4000 km area:
Using the new geographic tools in Mathematica 10:
WRI posted another example on Twitter.
There is another tool called
If you think Spain doesn't look like it intersects the circle, recall the position of the Gran Canary Islands. (Since it is a popular tourist destination it's a good guess that that is where the OP's friend is.)
EDIT: Since the animation was generated I have replaced the tooltips according to rcollyers suggestion. The tooltip label is now the
I am assuming you have Mathematica with you. So here's some quick and dirty way to get the info you require. I think it is very interesting to do this