5 kyu
The Captain's Distance Request
660 of 699rczerny
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Algorithms
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I like this one, because it brings me back to my sea-going years. :-) Note that TRUE nauticals never use notation degrees / minutes / seconds, but degrees, minutes and their decimals. Like this: 51-48.3 N 004-54.4 W And a captain will usually prefer a loxodromic course, especially for small distances, to avoid minute course changes every fifteen minutes or so.
Well, let's just assume that Captain Haversine is a pirate and goes by his own rules :)
... and that's why it's important to have domain experts when working on software :)
Fantastic kata that really learns you something!
I also enjoyed it very much.
Missing random tests for CoffeeScript
Needs sample and random tests.
Fixed for JS, need to fix for CoffeScript
Mostly fixed, will raise separate detailed issue on what's still missing.
I think this is kata on 4 kyu.
Basic tests for JS are missing, there's just a default CW template.
Added.
Fun little kata! I'm a big math geek, and I learned some new things with this one. And this kata got me up to 1kyu, so thanks!
Now good luck at getting to
1dan:Pso which kata made you 1dan? ;-)
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I think you have to be more clear of why you put " and ' signs... I was wondering around!
Info added to description.
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Great article!
This is my favourite kata so far!!
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CoffeeScript translation added. Please approve.
Approved, but needs to be fixed.
Fixed, but needs random tests.
These rounding instructions make this kata quite difficult! While I'm sure they were intended to allow for a wider range of acceptable answers, the whole "round to the lower 10km" strategy effectively means that come to nearly the exact same answer as the test.
For example: Say the test case's desired estimate is 9000.001km. It will round that to 9000km. If I calculate 8999.999km, then I have to round (or truncate) that to 8990km, which leads to an unaccepted answer, even though my true estimate was only .002km from the test case's estimate.
I think a better strategy would be to have the kata instructions dictate to round to the nearest 10km, or to just allow a certain margin of error.
Rounding requirement has been removed.
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It took a while but this one is now out of beta!
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Nice kata!
Thank you for the Feedback, xcthulhu! I will clarify my kata description further!
I updated the description. Hopefully, it is a little bit clearer now! Cheers!
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@jakber: Actually, a more numerically stable way of calculating solid angle between two unit vectors
aandbon S^3 isatan2(a x b, a . b), if you are going to go with the 3D trig solution