data = DERIV_DATA(data,ch,f) differentiation of given channel(s) with filter options
ARGUMENTS
data ... Zoo data
ch ... Channel(s) to operate on (single string or cell array of strings)
filt ... Filter options
filt = 0: do not filter (default)
filt = 1: filter data using 4th order butterworth low-pass with 10 Hz cutoff
filt = struct: filter according to struc fields (see bmech_filter)
RETURNS
data ... Zoo data with differentiated channels appended with suffix '_dot'
Notes
- see BMECH_DERIV for general function notes
See also bmech_deriv, deriv_line, gradient, filter_line