[Kst] [Bug 225178] New: Transforming log-scaled axes is not intuitive

[Michael Vincent]

https://bugs.kde.org/show_bug.cgi?id=225178

           Summary: Transforming log-scaled axes is not intuitive
           Product: kst
           Version: 1.8.0
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kst at kde.org
        ReportedBy: bug.zilla.vynce at neverbox.com


Version:           1.8.0 (using 3.5.10-3.fc10 Fedora, Fedora release 10
(Cambridge))
Compiler:          Target: i386-redhat-linux
OS:                Linux (i686) release 2.6.27.19-170.2.35.fc10.i686.PAE

1. Setup a plot. The vectors should have values in the 1000's.
2. Set the y axis to log scale.
3. Enable the right-axis transform and set the expression to y/1000.
4. The transform expression is applied to exponent of the left axis instead of
the actual value.

For example:
I have a label on the left axis that says 10^5. If I set the transform
expression to y/1000, I expect the corresponding label on the right axis to be
100. Instead it is 0.005. If I change the transform expression to 10^(y-3), it
works correctly. The problem is that if you then disable log scaling, the
transformation is wrong again and needs to be set back to y/1000. I don't think
that toggling log scaling on and off should affect the transformed axis.

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