Revision 9e5b9bb8a0564f8bf629df4ca5e96d3078f50363 authored by jmc on 14 July 2008, 00:00:00 UTC, committed by Gabor Csardi on 14 July 2008, 00:00:00 UTC
1 parent a3b36b1
speedGPS.R
speedGPS <- function(xyz, time, rOut = c(.25, .75), naValue = .25) {
speed <- trackSpeed(xyz, time)
rIn <- range(speed, na.rm = TRUE)
value <- diff(rOut) * (speed - rIn[1])/diff(rIn) + rOut[1]
ifelse(is.na(value), rep(naValue, length(value)), value)
}
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