i have some temperature data and i would like to determine the start of a freezing period and its end. With a filter x<0 i only get negative values but no period. I think it should work with some if clauses where the start of the period is defined as [if < 0 and previous value >0] and the end as [if > 0 and previous value <0] so the switch from positive - negative - positive can be presented. After that i also need the datetime and the duration of the period. But i've no idea how it can be solved with Origin.
We'd love to help but can't do much with the information here.
Could you please submit a support ticket with a brief explanation (such as your post) along with your OPJU file so we have something to see and work with.