[Kst] [Bug 87149] New: Data mode does not work well for equations or curves with widely spaced x values

[Rick Chern]

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http://bugs.kde.org/show_bug.cgi?id=87149      
           Summary: Data mode does not work well for equations or curves
                    with widely spaced x values
           Product: kst
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kst kde org
        ReportedBy: rchern interchange ubc ca


Version:           0.99-devel (using KDE KDE 3.2.1)
Installed from:    Compiled From Sources
Compiler:          gcc (GCC) 3.3.2 20031022  
OS:                Linux

The red dot jumps around strangely when in data mode and over an equation with widely spaced x values

How to reproduce 
- start kst
- create a vector
- create a new equation, and for x axis generate 100 samples from 0 to 10.  Plot the equation
- enter data mode
- move cursor over the equation.  
Note that the red dot keeps on jumping to the top left corner of the plot.

Expected behaviour:
Red dot more closely follows the equation.