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  1. ROOT
  2. ROOT-10706

Fit to TMultiGraph with single TGraphAsymErrors different from single graph fit

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Medium
    • Resolution: Fixed
    • Affects Version/s: 6.16/00
    • Fix Version/s: 6.22/00
    • Component/s: None
    • Labels:
      None
    • Environment:

      Linux Fedora 31,  5.5.15-200.fc31.x86_64

       

      Description

      A fit to a TMultiGraph seems to ignore by default the errors on coordinates.

      This is seen fore example when a single TGraphAsymmError is put inside a TMultiGraph: the fit to the multigraph (red in the attached plot) is different from the fit to the graph (blue in the attached plot)

      In fact the same fit can be reproduced by specifying the "EX0" option on the TGraphAsymError fit (green dashed in tha attached plot).

       

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        1. testbug.C
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        2. plot.png
          plot.png
          9 kB

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            People

            Assignee:
            moneta Lorenzo Moneta
            Reporter:
            fdettori Francesco Dettori
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              Dates

              Created:
              Updated:
              Resolved: