Hi,

I'd appreciate some help with the following. If you set some raw data on a QwtPlotCurve, how can you make the plot draw consecutive samples in consecutive pixels?

For example, in a QwtPlot subclass constructor:

Qt Code: 
  1. QwtPlotCurve *curve = new QwtPlotCurve("curve");
  2. curve->setPen(QPen(Qt::green, 1));
  3. curve->attach(this);
  4. setCanvasBackground( QColor(Qt::black) );
  5. curve->setData(qwtData);
  6. enableAxis(QwtPlot::xBottom, false);
  7. enableAxis(QwtPlot::yLeft, false);
  8. setMargin(0);
  9. setFixedSize(800, 600);
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If qwtData has 400 values, they don't occupy half of the plot, instead they are stretched to fit the whole 800 pixels.

I'd be very thankful for any clues.

catto