Total length in meter about brouter-web HOT 8 CLOSED

But Brouter web already displays the distance on the left, if you mean the total one.

from brouter-web.

Actual it is Length: 24.6 km,
but Length: 24.699 km would be more precise.

from brouter-web.

Well, are you aware that referring the route length by 5 valid digit precission is nonsense in mathematical and physical point of view, when the accuracy is much worse ?

Similarly, accuracy of determining the way length by an bicycle odometer is much worse than the odometer precision.

from brouter-web.

I am sorry, but I think your answer is not constructive.

But I can explain it in other words.
It would be helpful to see the distance in meter. For example route one is 24699 m and route two 24695 m. Right now you cannot see such small differences. This would help to determine, if costs in total are higher because of a longer way or a more "difficult" way.

from brouter-web.

Why do you think it is not constructive ?

The length determination resolution is let say 1 m.
The length determination precision ( mean error of repeated determination ) is even better, 0 m.
The length determination accuracy ( error wrt to real value ) is hardly much better than 1% of the length.

if there is one value 24699 +/- 200 and the other 24695 +/- 200, the the last 2 digits and the difference 4 are statistically insignificant. That means the probability the difference is cause by random effects is very close to 100%. By other words, high precision and resolution without good enough accuracy is useless.

IMHO, much more useful parameter would be a mean costfactor = cost / length, with no reason for more than 3-4 digits,
See also #39

from brouter-web.

I missed a more precise format when comparing short walking distances myself. But I would like to keep the short formatting as it is easier to read and usually precise enough.

One idea was to show more digits when the length is lower than 10 km, but that wouldn't help with your example of 24.6 km and using multiple formats might be confusing.

Using a tooltip might be an idea but is not ideal as you can't see both values at once when comparing using two windows. Maybe switching formats on click might be an idea.

from brouter-web.

I'm fine with a tooltip.

from brouter-web.

Thanks.

from brouter-web.