How to find the minimum voltage difference in a time series data after which a new waveform starts?-CodePudding

I have a lot of time series data, one example could be found under this link: In this image, I am assuming the red marked line is the shortest, I want to find out what is the exact voltage difference for this shortest line. Basically, I am trying to find out the minimum voltage difference in a measurement after which a new waveform starts.

I know that there are a lot of smaller voltage difference which is near to 0 and looks like the noise, so I am trying to find out, the minimum voltage difference above 2. For this example, what is the voltage difference which is above 2 and the minimum among all other waveform. Could anyone please help with this?

CodePudding user response：

IIUC, that will give you the answer:

diff_1[abs(diff_1.values) > 2].sort_values(key=abs)

which returns

4971    2.023046
6719    2.043277
3139   -2.073623
141    -2.083738
7138   -2.103968
          ...   
640    -3.550446
890    -3.560562
7139   -3.732521
4889   -4.288858
5139   -4.450702
Name: voltage, Length: 66, dtype: float64

So, the minimum voltage difference greater than 2 is 2.023046