2 ms·

So, how is it measured in practice ?

• Someone 6y ago
  One option is to pick a yardstick size and keep that for all measurements. Disadvantage is that the size picked affects not only the coast lengths, but also relative differences and even rankings. It also means scaling an area by a factor of N (typically) won’t scale its boundary length by N. That’s counterintuitive. That brings us to option 2: vary yardstick length with the size of the object being measured. Question then is: how exactly? Alternatively, estimate the fractal dimension (https://en.wikipedia.org/wiki/Fractal_dimension https://en.wikipedia.org/wiki/Fractal_dimension) of the area and use that as the measure of coast length/area.