Is there a way to get min max values of all displayed curves and markers in a plot?
Is there a way to get min max values of all displayed curves and markers in a plot?
Iterate over the curves and markers ( see QwtPlotDict::itemList( int rtti ) const ) and unite the bounding rectangles.
In QwtPlot::updateAxes() you find code that is quite close to what you are looking for.
Uwe
mqt (30th August 2013)
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