hi,
autoscaling is not happening in the y axis, please can anyone help me out ..

plot = new DataPlot(this);
plot->setAxisTitle(QwtPlot::xBottom, "Data");
plot->setAxisAutoScale(QwtPlot::yLeft);
plot->setAxisScale(QwtPlot::xBottom, 0,1200);
plot->setAxisScale(QwtPlot::yLeft,-500,2500);
plot->setAxisAutoScale(QwtPlot::yLeft);

can any one help me out thanks in advance..

Regard,
kulasekaran