Clear all filters from the current environment
emr_filter.clear()
None.
emr_db.init_examples()
#> NULL
emr_filter.create("f1", "dense_track", time.shift = c(2, 4))
emr_filter.ls()
#> [1] "f1"
emr_filter.clear()
#> NULL
emr_filter.ls()
#> character(0)