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    Hello Salvatore,<br>
    Thanks for the reply.<br>
    Yes, I used the same dataset and switched x and y. It worked when I
    did log transform with left-axis.<br>
    the same dataset fails if I switch x and y and do transform on
    bottom axis.<br>
    BR Peter<br>
    <br>
    <br>
    <div class="moz-cite-prefix">Am 08.12.2013 18:44, schrieb Salvatore
      Coppola:<br>
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cite="mid:CAMhKuRuW2YzyyAVqHrWjSt__itQsni52pKVsDPov1Meeacz-SQ@mail.gmail.com"
      type="cite">
      <div dir="ltr">Have you checked data (>0)?
        <div>Salvatore</div>
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      <div class="gmail_extra"><br>
        <br>
        <div class="gmail_quote">2013/12/7 Peter Thurner <span
            dir="ltr"><<a moz-do-not-send="true"
              href="mailto:pm.thurner@gmx.at" target="_blank">pm.thurner@gmx.at</a>></span><br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello *,<br>
            <br>
            This is the first time that I post something, so please be
            patient with me :-)<br>
            <br>
            I have been using Plotpanel now for a while to plot Bode
            diagrams within Lazarus GUIs.<br>
            Now I would like to switch to TAChart which seems very
            powerfull too.<br>
            I tried it out with linear graphs and it works very well.<br>
            <br>
            But If I try to plot a bode diagram with a logarithmic x
            Axis then it crashes.<br>
            I followed the tutorial about logarithmic transform:<br>
            <a moz-do-not-send="true"
href="http://wiki.freepascal.org/TAChart_Tutorial:_ListChartSource,_Logarithmic_Axis,_Fitting"
              target="_blank">http://wiki.freepascal.org/TAChart_Tutorial:_ListChartSource,_Logarithmic_Axis,_Fitting</a><br>
            and I did all the steps successfully.<br>
            <br>
            BUT If I try to apply a logarithmic transform to the bottom
            axis (x-axis) then it crashes.<br>
            It displays the graph but the grid lines are gone.<br>
            Has anybody tried already to apply log transform to bottom
            axis? It works for left axis.<br>
            <br>
            Thanks<br>
            PeterT<br>
            <br>
            --<br>
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