Apply a Savitzky-Golay filter to a view — apply_filter_sgolay • movementsync

Apply a Savitzky-Golay filter to a view

Usage

apply_filter_sgolay(
  view,
  data_points,
  n,
  p,
  folder_out = "Filtered",
  save_output = FALSE
)

Arguments

view: View object.
data_points: body parts e.g. 'Nose'.
n: window size.
p: poly order.
folder_out: output folder relative to recording home (default is 'Filtered').
save_output: save the output?

Value

a FilteredView object.

See also

Other data functions: get_data_points(), get_duration_annotation_data(), get_feature_data(), get_filtered_views(), get_joined_view(), get_metre_data(), get_onsets_selected_data(), get_processed_views(), get_processed_view(), get_raw_optflow_view(), get_raw_views(), get_raw_view(), get_recording(), get_sample_recording()

Examples

r <- get_sample_recording()
rv <- get_raw_view(r, "Central", "", "Sitar")
pv <- get_processed_view(rv)

set.seed(1)
fv1 <- apply_filter_sgolay(pv, c("Nose", "RWrist", "LWrist"), n = 19, p = 4)
fv2 <- apply_filter_sgolay(pv, c("Nose", "RWrist", "LWrist"), n = 41, p = 3)

set.seed(1) # to reproduce with S3 filter object
fv3 <- apply_filter(pv, c("Nose", "RWrist", "LWrist"), signal::sgolay(4, 19))