qgraf  |   known problems
qgraf–3.4 , 3.4.*
  • Description:   forbidden characters (mainly TAB) may not be detected in input files.
    Affected versions:   3.4,  3.4.1,  3.4.2
    Status:   fixed (3.5.0)
    Found/reported by:   a user, on 2021-05-27
    Remarks:   version 3.4 will likely not be patched, but things are back to normal with version 3.5 (I can probably provide some script or program to whomever has to fix many broken files).
  • Description:   problematic error messages about model-functions.
    Affected versions:   3.4,  3.4.1
    Status:   fixed (3.4.2)
    Found/reported by:   author, on 2019-04-06
  • Description:plink is faulty (with “true”).
    Affected versions:   3.4
    Status:   fixed (3.4.1)
    Found/reported by:   author, on 2019-03-16
  • Description:   no diagrams generated if options nosnail and notadpole are both specified.
    Affected versions:   3.4
    Status:   fixed (3.4.1)
    Found/reported by:   author, on 2019-03-03
    Remarks:   in this case “notadpole” is redundant, and may be omitted.
earlier versions
  • Description:   two of the propagator types displayed on the screen may be wrong.
    Affected versions:   3.2,  3.3
    Status:   fixed (3.4)
    Found/reported by:   author, on 2019-01-08
  • Description:   options nosigma/sigma may not work properly if diagrams have singular bridges (ie tadpoles).
    Affected versions:   all versions from 1.3 to 3.3
    Status:   fixed (3.4)
    Found/reported by:   author, on 2018-12-19
    Remarks:   although this special case is likely not very useful, the existence of connected 2–point sub-diagrams delimited by two singular bridges should now be correctly identified too.
  • Description:   user-defined model-constants may bring the execution to an abrupt stop.
    Affected versions:   all versions from 3.0 to 3.2
    Status:   fixed (3.3)
    Found/reported by:   author, on 2018-07-28
  • Description:   some style-files (not from the official distribution) may be processed incorrectly.
    Affected versions:   all versions from 3.0 to 3.1.5
    Status:   fixed (3.2)
    Found/reported by:   author, on 2018-05-04
    Remarks:   this type of problem should be quite obvious: either the execution aborts or the diagram description will be incomplete.
  • Description:   the diagram index may be wrong if the number of diagrams is large ( > 8×108 ); this also applies to the number(s) of diagrams displayed on the screen.
    Affected versions:   3.1.5
    Status:   fixed (3.2)
    Found/reported by:   author, on 2018-04-17
    Remarks:   starting with version 3.2, the diagram index may clearly exceed 231.
  • Description:vsum may not work properly.
    Affected versions:   3.1,  3.1.1
    Status:   fixed (3.1.2)
    Found/reported by:   a user, on 2010-09-10
    Remarks:   DIANA users are seemingly not affected by this problem.
  • Description:psum may not work properly.
    Affected versions:   3.1
    Status:   fixed (3.1.1)
    Found/reported by:   author, on 2008-04-03
    Remarks:   DIANA users are seemingly not affected by this problem.
  • Description:   one of the propagator numbers displayed on the screen may be wrong.
    Affected versions:   3.1
    Status:   fixed (3.1.1)
    Found/reported by:   author
qgraf–r  |   known problems
  • Description:   the case where there is at least one field which does not appear in any vertex is treated incorrectly.
    Affected versions:   0.5
    Status:   fixed (0.6)
    Found/reported by:   author, on 2018-06-05
    Remarks:   this anomalous case may be unlikely to appear in practice, but...