"Filter examples by Date"

hughesfleming68hughesfleming68 MemberPosts:323Unicorn
edited June 2019 inHelp

I am having difficulty with the Filter Examples operator with regards to filtering dates.

I am start off by generating a Macro to return the current date/time when I run the process. I would like to use this to filter examples prior to the current date but how to do I get from the format Mar 17,2017 12:16:18 PM CET to 03/23/2017 which the Filter examples operater expects?

Kind regards,

Alex

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Best Answer

  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University ProfessorPosts:3,380RM Data Scientist
    Solution Accepted

    Hi Alex,

    i would recommend to use the expression option in Filter Examples and write the statement there with the Generate Attribute syntax.

    Best,

    Martin

    - Head of Data Science Services at RapidMiner -
    Dortmund, Germany

Answers

  • hughesfleming68hughesfleming68 MemberPosts:323Unicorn

    Here is how I did it if anyone needs to do this.

    Generate Attribute with the following function expression:- date_str_custom(date_now(),"MM/dd/yyyy")

    Extract the Macro

    Filter Examples with the default "custom_filters" and add the macro.

    I am sure there are other ways but this did the job. Many thanks to Martin!

    Regards,

    Alex

    Thomas_Ott
  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University ProfessorPosts:3,380RM Data Scientist

    Alex,

    i think you can do

    date_str_custom(date_now(),"MM/dd/yyyy")

    directly in Filter Examples.

    Or use Generate Macro instead of Generate Macro + Extract Macro

    ~Martin

    - Head of Data Science Services at RapidMiner -
    Dortmund, Germany
  • hughesfleming68hughesfleming68 MemberPosts:323Unicorn

    Thanks Martin,

    You are right. Generating the macro is all you need. I have made the change.

    Thomas_Ott
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