@Mexflubber said in Resampling issue, duplicated records.: How can I spot where the data issue is ? Check the length of the data line. For datas[0] for example insert... len(self.datas[0]) into the next function in the same line you are printing your information. By checking the length of the data line you can check to see if the data is simply being displayed again or you have new data. If length is the same for your duplicated data, you are just seeing the same data twice and have no duplicated data.