zeroSpeeds: deals with zero speeds
In arwasayegh/mdep: midas data extraction and pre-processing

Description Usage Arguments Value Note See Also Examples

one way to deal with zero speeds so it helps in the calculation of traffic densities macroMIDAS. The method is to replace all zero speeds by NA values and so traffic density values would be NA as well.

1 2	##replace zeros with NA replaceZeroNaMIDAS(x, speed.lane = "Speed.Lane")

`x`	object of class 'midas' with speed column(s)
`speed.lane`	character. part of names of the speed columns which distinguish them from other columns. Default to "Speed.Lane"

midas object with updated speed data of the traffic.data element (zeros replaced by NA's)

not sure if this is the right way to do it for some entries, zero speed does not make sense, more like a measurement fault

macroMIDAS

## Not run: 
#md is a one .csv data set you've downloaded
ex <- replaceZeroNaMIDAS(x = md)
#comment(ex) #provides the number of rows where zero speeds are found and replaced by NA

## End(Not run)