[Lazarus] TAChart - Logarithmic Transform fails for X Axis

[Peter Thurner]

Hello Salvatore,
Thanks for the reply.
Yes, I used the same dataset and switched x and y. It worked when I did 
log transform with left-axis.
the same dataset fails if I switch x and y and do transform on bottom axis.
BR Peter


Am 08.12.2013 18:44, schrieb Salvatore Coppola:
> Have you checked data (>0)?
> Salvatore
>
>
> 2013/12/7 Peter Thurner <pm.thurner at gmx.at <mailto:pm.thurner at gmx.at>>
>
>     Hello *,
>
>     This is the first time that I post something, so please be patient
>     with me :-)
>
>     I have been using Plotpanel now for a while to plot Bode diagrams
>     within Lazarus GUIs.
>     Now I would like to switch to TAChart which seems very powerfull too.
>     I tried it out with linear graphs and it works very well.
>
>     But If I try to plot a bode diagram with a logarithmic x Axis then
>     it crashes.
>     I followed the tutorial about logarithmic transform:
>     http://wiki.freepascal.org/TAChart_Tutorial:_ListChartSource,_Logarithmic_Axis,_Fitting
>     and I did all the steps successfully.
>
>     BUT If I try to apply a logarithmic transform to the bottom axis
>     (x-axis) then it crashes.
>     It displays the graph but the grid lines are gone.
>     Has anybody tried already to apply log transform to bottom axis?
>     It works for left axis.
>
>     Thanks
>     PeterT
>
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