Downsample to lower frequency
Arguments
- data
Data frame with
sensor_id,datetime,lon,lat.- target_mins
Target interval in minutes.
- method
Downsample mode:
"rigid"(first in window) or"representative"(closest to window center).- groups
Grouping columns for independent downsampling.
- verbose
Logical; print summary.
- return_class
Output class:
"data.frame"(default) or"data.table".
