Time Series data issue

User: "xiangw02"
New Altair Community Member
Updated by Jocelyn

Hi I'm new to Time Series ARIMA model. when I train this model with the data below. i got this error: Indices of the time series are not strictly monotonic increasing. I try to forcast energy usage for every 15 mins.  please advise.

Time                                                                                                                                                     Usage

2/20/2018 1:00 PM 1,327.68
2/20/2018 1:15 PM 1,330.56
2/20/2018 1:30 PM 1,351.68
2/20/2018 1:45 PM 1,350.72
2/20/2018 10:00 AM 1,302.72
2/20/2018 10:00 PM 1,140.48
2/20/2018 10:15 AM 1,305.60
2/20/2018 10:15 PM 1,131.84
2/20/2018 10:30 AM 1,305.60

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    User: "tftemme"
    New Altair Community Member
    Accepted Answer
    Hi @Montse

    Yes your data is not sorted correctly. You first have all years for January, then all years for February (so your 6 th. example is earlier than your 5 th. example). Hence the Arima Trainer correctly throws the error that your date indices are not montonic increasing. Please first sort your data after the date attribute using for example the Sort operator

    Best regards,
    Fabian