Read ARFF operator does not provide attribute names to subsequent operators

yzanyzan Member Posts: 66 Unicorn
edited December 2018 in Product Feedback - Resolved

When I connect the output of "Read ARFF" operator to "Select Attributes" operator, the select list in "Select Attributes" operator does not get populated by column names. This behaviour is inconsistent with behaviour of other readers like csv or database.

 

Note: The column names do not get populated even after running the whole process.

 

Workaround: Write the column names into the select lists.

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Declined · Last Updated

Since the operator does not have any information prior to execution, there can be no meta data before execution.

Comments

  • sgenzersgenzer Administrator, Moderator, Employee, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,959 Community Manager

    confirmed bug in meta data propagation in Read ARFF operator. Thanks for reporting.


    Scott

     

  • sgenzersgenzer Administrator, Moderator, Employee, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,959 Community Manager

    Workaround from engineering:

     

    "You can add a breakpointer on Read ARFF, run into the breakpoint, edit the following operators that now do have meta data, and run the remainder of the process as a workaround."

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