qgraf   |   known problems
qgraf–3.5, qgraf–3.6
  • Description:   there is a problem for large vertex degrees ( > 10 ).
    Affected versions:   3.6.0 to 3.6.7
    Status:   to be fixed
    Found/reported by:   a user, on 2024-02-09
    Remarks:   as noted in the manual, changing the value of most of the parameters of the program is not advisable.
  • Description:   the ability to use character strings describing unencoded rationals (in model-files) is broken.
    Affected versions:   3.5.0 to 3.6.6
    Status:   fixed (3.6.7)
    Found/reported by:   author, on 2023-12-16
  • Description:   the ability to use character strings with apostrophes (in control- and model-files) is broken.
    Affected versions:   3.5.0 to 3.6.6
    Status:   fixed (3.6.7)
    Found/reported by:   author, on 2023-11-14
    Remarks:   for example, the encoded string 'a''s' (unencoded, a's) generates an error.
  • Description:   some bits of information can be displayed even when config option noinfo is used.
    Affected versions:   3.6.4 to 3.6.6
    Status:   fixed (3.6.7)
    Found/reported by:   author, on 2023-11-03
  • Description:   the program's execution may terminate with error trm_1.
    Affected versions:   3.6.0 to 3.6.5
    Status:   fixed (3.6.6)
    Found/reported by:   a user, on 2023-05-04
    Remarks:   this problem is due to a wrong internal check on the usable memory size and has no implications for successful runs.
  • Description:   extended loops statement may disrupt internal configuration of the diagram options.
    Affected versions:   3.6.4
    Status:   fixed (3.6.5)
    Found/reported by:   author, on 2022-09-30
  • Description:   ‘improved’ psum may discard too many diagrams.
    Affected versions:   3.6.0 to 3.6.3
    Status:   fixed (3.6.4)
    Found/reported by:   author, on 2022-09-09
  • Description:   the computation of the internal momenta may be omitted in some multiple-output instances.
    Affected versions:   3.5.0, 3.5.1, 3.6.0 to 3.6.2
    Status:   fixed (3.5.2 and 3.6.3)
    Found/reported by:   author, on 2022-06-05
  • Description:   the ability to define the external momenta is broken.
    Affected versions:   3.6.0 to 3.6.2
    Status:   fixed (3.6.3)
    Found/reported by:   author, on 2022-06-04
  • Description:index_offset statement cannot appear before partition statement.
    Affected versions:   3.6.0 to 3.6.2
    Status:   fixed (3.6.3)
    Found/reported by:   author, on 2022-05
  • Description:   some models can be erroneoulsy classified as decomposable, and then the diagram generation may be skipped.
    Affected versions:   3.6.0, 3.6.1
    Status:   fixed (3.6.2)
    Found/reported by:   a user, on 2022-05-10
  • Description:   user-defined model-constants are not processed correctly, and the program may crash.
    Affected versions:   3.6.0
    Status:   fixed (3.6.1)
    Found/reported by:   author, on 2022-04-28
  • Description:   an error message that should point to the model-file points to some other file instead.
    Affected versions:   3.5.0
    Status:   fixed (3.5.1)
    Found/reported by:   author, on 2022-03-12
qgraf–3.4
  • Description:forbidden characters (mainly Tab) are not detected in input files.
    Affected versions:   3.4 to 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.
  • 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 diagram is 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
  • For versions 3.0 to 3.3, see here.

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...