[kst] [Bug 499178] New: two columns of data have cross-aliased plotting at the regions that one of them is undefined (NaN)

[vesselin kavalov]

https://bugs.kde.org/show_bug.cgi?id=499178

            Bug ID: 499178
           Summary: two columns of data have cross-aliased plotting at the
                    regions that one of them is undefined (NaN)
    Classification: Applications
           Product: kst
           Version: 2.0.8
          Platform: Ubuntu
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: plotting
          Assignee: kst at kde.org
          Reporter: vesselin_kavalov at yahoo.com
  Target Milestone: ---

Created attachment 177703
  --> https://bugs.kde.org/attachment.cgi?id=177703&action=edit
screenshot of the problematic plot

SUMMARY


STEPS TO REPRODUCE
1. CSV file with 2 colums of data. One of them has normal numerical values from
beginning to end.
2. The other one is undefined till the the middle of the file (total about
74,000 lines) and then has some data,
then goes undefined (empty) for a shot while, then some value for a bit longer
and then undefined to the end
3. 

OBSERVED RESULT
When plotted the regions where the second data is undefined, the tool displays
the values of the first data, so the 2 curves overlap and creates the
impression that the second data is mirroring the first one 

EXPECTED RESULT
The plot should be  just missing where the data is not defined

SOFTWARE/OS VERSIONS
PRETTY_NAME="Ubuntu 24.04.1 LTS"
Qt Version: 

ADDITIONAL INFORMATION

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