Filters position data based on travel speed and longitude changes during equinox periods.
Usage
speed_filter(posdata, speed)
Arguments
- posdata
A data frame containing position data with columns lat_smooth2, lon_smooth2, tFirst, and eqfilter.
- speed
Maximum allowable speed in km/h.
Value
A filtered data frame with positions exceeding speed limits or showing abnormal longitude changes during equinox periods removed.