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  1. ROOT
  2. ROOT-8901

The RMS (StdDev) changes after zooms on the X axis

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Details

    • Bug
    • Status: Closed (View Workflow)
    • High
    • Resolution: Not a Bug
    • 6.10/00
    • None
    • Math Libraries
    • None
    • Any

    Description

      The attached macro desmonstrates the problem. The RMS is printed after filling. Then the axis range is change twice. 2nd times it is reset to the full range. The RMS is printed again. Intuitively it should be the same as before as we are in principle back to the initial state... But it is not. we get:

      Histogram X range       = (0, 512)
      RMS before zoom         = 2.88661
      New Histogram X range   = (100, 400)
      Reset Histogram X range = (0, 512)
      RMS after zooms         = 3.56603

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            moneta Lorenzo Moneta
            couet Olivier Couet
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            Dates

              Created:
              Updated:
              Resolved: