Hi Thomas,
Thanks for your reply! And you are right,I adjusted the parameters of my filter according
to your reply. It worked without any warnings and the outputs were normal. Thank you very
much!
And the width between mwcs_low and mwcs_high is at least 0.03 in my own project.I hope
this will be helpful to other users who have the same problems as me( ̄. ̄)
weiyu