Hello, what kind of timestamp is specified in the walking activity tmp-files? In another thread here it is said that the createdOn is specified as a unix timestamp. How to make the timestamp of the JSON files in the walking activity readable (Python)? I could not find any format of timestamps that is similar to the given output e.g. 1798821.752847125. Best regards

Created by Vanessa Binöder vanessabinoeder
The timestamps are actually just relative time. I believe it is the number of milliseconds since the phone was rebooted so the time of the rows should be zeroed by subtracting the smaller number in the series. I suggest looking at https://github.com/Sage-Bionetworks/mhealthtools that contains some feature engineering code used with this data.

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