plotting just the points not an actual curve

[hml]

Thanks. I do this:

QwtPlotCurve* pc = new QwtPlotCurve;
  pc->setStyle(QwtPlotCurve::Dots);
	QPen* pen = new QPen( pc->pen() );
	pen->setWidth( pen->width()*4 );
  pc->setPen(*pen);

QwtPlotCurve* pc = new QwtPlotCurve;
  pc->setStyle(QwtPlotCurve::Dots);
	QPen* pen = new QPen( pc->pen() );
	pen->setWidth( pen->width()*4 );
  pc->setPen(*pen);

To copy to clipboard, switch view to plain text mode 

but the dots look just as small as before,

is this what you meant?

regards,