date format and date_add

Samuel_SchwarzeSamuel_Schwarze Member Posts: 2 Contributor I
edited November 2018 in Help

I have a problem with a macro with the name time_frame. Its value is set on 27/07/2015 1:00:00 AM

In a loop I want to increase this marco with each loop by 5 Minutes. I tried: date_add(%{time_frame},5,DATE_UNIT_DAY), but that doesnt work.

The failure message is: Invalid argument type for 'date_add'. first argument must be Calendar

So the question is, where is the mistake?

Thank you in advance,



  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,282 RM Data Scientist

    the first argument needs to be of type date. This means it needs to be in rapidminer date (milliseconds since 1970). You can use the parsing functions to convert your date into a RM date.

    - Head of Data Science Services at RapidMiner -
    Dortmund, Germany
  • Samuel_SchwarzeSamuel_Schwarze Member Posts: 2 Contributor I
    Thank you for your answer. Could you go a bit more in detail. I tried it with the Parse Numbers operator, but that doesnt work, because the input for the operator is missing.

    Sry, I am a bloody newcomer. Thank you
  • Marco_BoeckMarco_Boeck Team Lead Software Engineering Administrator, Moderator, Employee, Member, University Professor Posts: 1,966 RM Engineering

    you are looking for this:

    date_add(date_parse_custom(%{time_frame}, "dd/MM/yyyy hh:mm:ss a", "us"), 5, DATE_UNIT_DAY)
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