mergeTrackStop {crawl} | R Documentation |
The function merges a location data set with a stopping variable data set.
mergeTrackStop(data, stopData, Time.name="Time", interp=c("zeros", "ma0"), win=2, constCol)
data |
Location data. |
stopData |
stopping variable data set. |
Time.name |
character naming time index variable in both data sets |
interp |
method of interpolation. |
win |
window for "ma0" interpolation method. |
constCol |
columns in data for which the user would like
to be constant, such as id or sex. |
Simply merges the data frames and interpolates based on the chosen
method. Both data frames have to use the same name for the time
variable. Also contains stopType
which = "o" if observed or "p"
for interpolated.
The merged data is truncated to the first and last time in the location data set. Missing values in the stopping variable data set can be interpolated by replacing them with zeros (full movement) or first replacing with zeros then using a moving average to smooth the data. Only the missing values are then replace with this smoothed data. This allows a smooth transition to full movement.
Merged data.frame with new column from stopData
. Missing values
in the stopping variable will be interpolated
Devin S. Johnson
track <- data.frame(TimeVar=sort(runif(20,0,20)), x=1:20, y=20:1) track stopData <- data.frame(TimeVar=0:29, stopVar=round(runif(30))) stopData mergeTrackStop(track, stopData, Time.name="TimeVar")