Adding NED coordinate system #71
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This adds the type of NED coordinates (standard for navigation and aerospace applications), transformations to and from ENU, and other transformations by composition through ENU
Added also a few tests and some cosmetic changes
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Just want to say thanks for providing this. It's a handy reference for define my own conversion. |
anowacki
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anowacki
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All looks good bar a couple of textual things (ENU{T} in and '…extrema care must be taken…' in README.md). Consider reverting the new whitespace inserted in src/transformations.jl.
| ##### `ENU{T}` - east-north-up | ||
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| The `ENU` type is a local Cartesian coordinate that encodes a point's distance | ||
| The `ENU` type stores local Cartesian coordinates that encode a point's distance |
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I think the old text is fine. Whether a coordinate is a single encoding of position or only one of the numbers which encodes position is an age-old debate.
| extreme care must be taken to choose an appropriate zone for the `UTM` methods. | ||
| (In the future, we implement the exact UTM transformation as a fallback — | ||
| contributions welcome!) | ||
| extreme care must be taken to choose an appropriate zone for the `UTM` methods |
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The original text is correct—the proposed change is typographically not.
| """ | ||
| ECEFfromUTM(zone, isnorth, datum) = ECEFfromLLA(datum) ∘ LLAfromUTM(zone, isnorth, datum) | ||
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No need to introduce extra whitespace in an unrelated PR.
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Thank you @jleny for your contribution! Your approach of composed transformations makes sense to me. Overall it looks very good. Similarly to Claire, I 'do not love' the proliferation of conversions of things trivially computable from ENU by the user, but I accept that NED is much more common in some fields so I think it makes sense. I think I would be less encouraging for future PRs that add one or more of NWU, WSU, SEU, WND, SWD and ESD! |
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As discussed in issue #69: adds NEDfromENU / ENUfromNED transformations and the other transformations by composition.