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<H3><A NAME="8_19_4">8.19.4 Formatting the scale labels</A></H3>
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<P> In order to have full control over the way that the labels are
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displayed it is possible to define a callback function that will be
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applied to all labels. The callback function will be called with the
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label as the only argument and should return the value that will be
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displayed in the graph. This could for example be used to turn seconds
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(used to position data points) into hour and minutes on the scale. For
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further reference see the two methods: <A href="../ref/Axis.html#_AXIS_SETLABELFORMATCALLBACK">
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Graph::SetLabelFormatCallback();</A> and <A href="../ref/Axis.html#_AXIS_SETLABELFORMAT">
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Graph::SetLabelFormat();</A></P>
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