[MacPorts] #50585: Gnumeric will crash when selecting Matrix graphic

[MacPorts]

#50585: Gnumeric will crash when selecting Matrix graphic
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  Reporter:  m.rick@…  |      Owner:  devans@…
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  gnumeric  |
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Comment (by devans@…):

 The Matrix plots (and others, too, I think) require you to select an
 appropriately sized region of cells in the spreadsheet.  At least 2
 rows/columns for MatrixXY and 3 for MatrixXYZ.  The error described here
 results from not doing this and causes the crash in MatrixXY plots due to
 unexpected NULL data while trying to construct the sample plot view.
 MatrixXYZ doesn't actually crash due to an earlier fix committed to
 goffice
 [https://git.gnome.org/browse/goffice/commit/?id=813eabc31ed3cd7765312f78ae1cbb7c2085ebb9
 here] and released with goffice 0.10.24.

 Relevant code (in goffice) is gog_xyz_matrix_plot_build_matrix() in
 plugins/plot_surface/gog-xyz-surface.c which handles both cases.

 This is fairly low level code and it would be better if there were a check
 for this condition at the gnumeric GUI level with a corresponding error
 dialog reminding the user to select his data region properly before trying
 to insert the chart.

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Ticket URL: <https://trac.macports.org/ticket/50585#comment:5>
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