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#611 Difference operator error

Babbage
wont-fix
None
3ReallyUrgent
2024-07-14
2024-07-10
Steve Keen
No

The difference operator is returning the negative of a change for yearly data (step size 1) yet the correct value for quarterly (step size 4).

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Related

Ravel: #611

Discussion

  • High Performance Coder

    PrivateDebt_{1834-1970} is sorted backwards. This is why you need to use -1 to get the correct value for Credit. You could sort it forwards by feeding it through a Ravel, and selecting "sort forward". Of course if we had the x-vector aware difference operator (its already a feature request) then the x-vector ordering won't matter. But we need the current difference operations anyway. Just like index is now x-vector aware, but we also need the non-x-vector aware version as well.

     

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