计算延迟时间

#pragma TextEncoding = "UTF-8"
#pragma rtGlobals=3     // Use modern global access method and strict wave access.
function lagtime()

wave mc = root:mc_2parts
wave w  = root:w
variable start_index,end_index

start_index = 739*9000
end_index = 751*9000-1

duplicate/O/R=[start_index,end_index] w,w_copy
duplicate/O/R=[start_index,end_index] mc,mc_copy


Correlate/auto w_copy,mc_copy
display mc_copy
SetAxis bottom -200,200

end