[R-sig-Geo] Question about trasport time calculation

Zivan Karaman z|v@n@k@r@m@n @end|ng |rom gm@||@com
Tue Aug 2 22:47:29 CEST 2022


Hi,

If your question is how to compute (more or less) exact distances from the
lon/lat coordinates, you can try the dist* functions from the package
geosphere.

HTH.

Zivan

On Tue, Aug 2, 2022 at 10:07 PM Kunal Bali <kunal.bali9 using gmail.com> wrote:

> Hi,
>
> Is it possible to calculate the transport time (of a particle) between 2
> coordinates using wind speed and distance?
> I know I can't simply apply Velocity = Distance/time over here because
> coordinates have different angles (lat, lon).
> So, could anyone provide some thoughts on it?
>
> I have some coordinates e.g.
>
> location 1(64.8, -147.7)
> location 2(64.8, -149.5)
> location 3(66.2, -150.0)
>
> the distance between (2 and 1)  coordinates are ~ 35 km
> the distance between (3 and 1)  coordinates are ~ 133 km
>
> the wind speed over (1, 2) coordinates is ~ 6 m/s
> the wind speed over (1,3) coordinates is  ~ 2 m/s
>
> So, how much time will be taken by a particle from locations 2 and 3 to
> location 1 with the given distance and wind speed?
>
> Thanks
> ---
> Kunal Bali
>
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>
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