logarithmic scales

[sergio486]

Hi guys,
I'm using a logarithmic scale defined by this function

setAxisScaleEngine(xBottom, new QwtLog10ScaleEngine);

setAxisScaleEngine(xBottom, new QwtLog10ScaleEngine);

To copy to clipboard, switch view to plain text mode 

but this can't regroup the values in the axis like this example:



any idea how to do this ?

[Uwe]

Also setting the right values for the scale ?

setAxisScale( QwtPlot::xBottom, 1e4, 2 * 1e6 );

setAxisScale( QwtPlot::xBottom, 1e4, 2 * 1e6 );

To copy to clipboard, switch view to plain text mode 

Maybe you also want to implement your own QwtScaleDraw object for returning richtext tick labels with superscripts ( or use the mathml textengine of Qwt 6 ).

Uwe

[sergio486]

Thanks Uwe,
i have any idea how to do this please can u forgive me an example.