R help - Jul 2021 - rWind: Error in if (is.numeric(v) && any(v < 0)) { : missing value where TRUE/FALSE needed

Hi,
I'm trying to work with rWind but when try to create a shortestpath (From
point a to B with gdistance package) I have this error:


Error in if (is.numeric(v) && any(v < 0)) { :
  missing value where TRUE/FALSE needed

so this is the code:

library(rWind)
library(raster)
library(gdistance)

w<-wind.dl(2020, 2, 12, 0,-17,28,45,50) #download all Mediterranea area

wind<-wind2raster(w) # create two raster about speed and direction wind

Conductance<-flow.dispersion(wind)

AtoBo<-
shortestPath(Conductance,spagna,libano,output="SpatialLines")
#create shortestpath (spagna and libano are two SpatialPointsDataFrame)

where I wrong?

Thanks in advance
E

-- 
Enzo Cocca PhD
in "Science and Technology for Archaeology and Cultural Heritage"

ISMEO
International Association of Mediterranean and Oriental Studies


mail: enzo.ccc at gmail.com
cell: +393495087014

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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

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