Due to recent updates, all users are required to create an Altair One account to login to the RapidMiner community. Click the Register button to create your account using the same email that you have previously used to login to the RapidMiner community. This will ensure that any previously created content will be synced to your Altair One account. Once you login, you will be asked to provide a username that identifies you to other Community users. Email us at Community with questions.

Attribute Missing Error

karim_keshavjeekarim_keshavjee Member, University Professor Posts: 9 University Professor
edited September 2021 in Help
Hi,

I'm getting an Attribute Missing Error for a Join operator:



However, the attribute is definitely there: 



Any suggestions?  I can't seem to find a similar error reported before.

Thanks,

Karim


PS.  I tried setting the role before and after the De-Pivot that came earlier.  Nothing happened.  I tried generating a new attribute called Question_ID based on the Question_ID that already exists.  No help.

Best Answers

  • karim_keshavjeekarim_keshavjee Member, University Professor Posts: 9 University Professor
    Solution Accepted
    Fixed it for now by storing the result of the previous process and retrieving it for the following process.  A bit of a silly work around, but it does work.
  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,529 RM Data Scientist
    Solution Accepted
    Hi,
    Pivot, De-Pivot and Transpose is the other main source. Since every operator only knows the schema, and not the content it cannot calculate the resulting schema for such operations.

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany

Answers

  • MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,529 RM Data Scientist
    this is only a problem, not an error. It occurs because one of the previous operators, does not report that the left hand side key attribute is in the data set. Commonly the cause is a Read Excel or Read CSV operator, where you did not use the import wizard but configured the operator manually.

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • karim_keshavjeekarim_keshavjee Member, University Professor Posts: 9 University Professor
    Hi Martin,

    Nope.  I did use the Wizard.  There was no problem until I used the De-Pivot operator.  After that, it stopped recognizing the attribute.

    K
Sign In or Register to comment.