Hi Eric,
I know but I can't understand where is the error.
the function shortestpath wants:
x="TransitionLayer", origin="Coords", goal="Coords"
or
x="TransitionLayer", origin="numeric", goal="numeric"
or
x="TransitionLayer", origin="SpatialPointsDataFrame",
goal="SpatialPointsDataFrame"
so I followed the example in the rWind package and works, than I changed
the coordinates and I have the error
Il giorno dom 11 lug 2021 alle ore 11:50 Eric Berger <ericjber...@gmail.com>
ha scritto:
> This error can result from v with NAs.
> e.g. to reproduce the error message
>
> > v <- as.numeric(NA)
> > if (is.numeric(v) && any(v < 0)) cat("hello world\n")
>
> see also
>
> https://stackoverflow.com/questions/7355187/error-in-if-while-condition-missing-value-where-true-false-needed
>
> HTH,
> Eric
>
>
--
Enzo Cocca PhD
in "Science and Technology for Archaeology and Cultural Heritage"
ISMEO
International Association of Mediterranean and Oriental Studies
mail: enzo....@gmail.com
cell: +393495087014
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