https://bugs.kde.org/show_bug.cgi?id=410855
Bug ID: 410855
Summary: Repeated Random Values
Product: LabPlot2
Version: 2.6.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: backend
Assignee: alexander.se...@web.de
Reporter: ameya.patwardha...@gmail.com
Target Milestone: ---
Created attachment 122089
--> https://bugs.kde.org/attachment.cgi?id=122089&action=edit
file which demonstrate repetitive random values
SUMMARY
Random values generated using the same function (eg. Flat, gaussian, etc.) are
always the same i.e. Row 1 always gives same value 'a', row 2 always gives same
value 'b', etc. This persists even across different files.
See code KDE/labplot
labplot/src/kdefrontend/spreadsheet/RandomValuesDialog.cpp
gsl_rng_set is the function that seeds the random value generator. This
function is not used anywhere leading to the repetitive values. The seed value
should be taken from the current time. This function should be used after
gsl_rng* r = gsl_rng_alloc(T);
STEPS TO REPRODUCE
1. New spreadsheet
2. Generate Data -> Random values
3.
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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