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  1. Solr
  2. SOLR-14478

Allow the diff Stream Evaluator to operate on the rows of a matrix

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major
    • Resolution: Resolved
    • Affects Version/s: None
    • Fix Version/s: 8.6
    • Component/s: streaming expressions
    • Labels:
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      Description

      Currently the diff function performs serial differencing on a numeric vector. This ticket will allow the diff function to perform serial differencing on all the rows of a matrix. This will make it easy to perform correlations on a matrix of differenced time series vectors using math expressions.

      A screen shot is attached with diff working on a matrix of time series data. The effect is powerful. It removes the trend from a matrix of time series vectors in one simple function call.

        Attachments

        1. Screen Shot 2020-05-14 at 8.54.07 AM.png
          1.01 MB
          Joel Bernstein
        2. SOLR-14478.patch
          9 kB
          Joel Bernstein

          Activity

            People

            • Assignee:
              jbernste Joel Bernstein
              Reporter:
              jbernste Joel Bernstein
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              Dates

              • Created:
                Updated:
                Resolved: