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Hello,
The Boost Geometry's distance calculations by Andoyer and Thomas formulas seem to induce large errors in the short-range case, as shown in
Figure 1. The maximum absolute distance error as a …
kkdd updated
9 months ago
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i.e., beyond the typical web mercator square
this is only really useful for the south pole station
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Compare and improve the performance of the geodesics:
```
# --haversines
> ft-extract-input --file=italy2019 --give-fraction=0.001 --give-distance=5 --haversines
> ft-cross-zone --file=italy2019…
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In task 9, HG Worlds 2019, Manfred Ruhmer is flying 199.875 kms in flare-timing but only 106.856 in FS. David Guiducci and Christian Tiefenbacher distances flown are much the same.
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Work out distances also with the [Andoyer algorithm](https://www.boost.org/doc/libs/1_59_0/boost/geometry/strategies/geographic/distance_andoyer.hpp).
That is the method that has been chosen for FS…
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While transcribing the formula for the forward azimuth using haversines, I struck this:
```
# scratch.u
use Lat Lat
use Lng Lng
azimuthFwd xLL yLL =
LatLng (Lat xLat) (Lng xLng) = xLL
…
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I'm seeing `ft-align-time` report no flying fixes for pilots when using an earth math option other than `--haversines`:
```
+ ft-align-time '--file=Spring Meeting 2020 Class 1'
Reading competitio…
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Just to compare compilation times for Dirk
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I have a Rust program to calculate geodesic distances with both my implementations and the geo crate. Distances are pretty similar but as soon as I use ST_Distance_Spheroid(), I get wildly different …
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*As a social worker I want to see the exact location of a family's house on a map in order to easily find them for home visits and to plan visits of nearby families together.*
**Objective**
Social…