Plots and Layouts

[Ozzy]

Hi,

I'm trying to put 3 plots in a Dialog, one big on the left, and two other one above tho other on the right side.
But I don't know how, cause I can't find a way to use Layout with Plot.

Can you help me with this?

best regards, Ozzy

[Uwe]

There is nothing special with QwtPlot, when using it in QLayouts.
What did you try ?

Uwe

[Ozzy]

Hi Uwe,

thanks for your answer. I've tried something like this:


QwtPlot *myPlot = new QwtPlot;
QGridLayout *layout = new QGridLayout( this );

setTitle( "Titel" );
QwtPlotCurve *plot = new QwtPlotCurve( "Plot1 " );

plot->setPen(QPen(Qt::black));
plot->attach(this);
plot->setStyle(QwtPlotCurve::Sticks);

double vx[vec.size()];
double vy[vec.size()];
for(uint i=0; i<vec.size(); i++) {
vx[i]= i;
vy[i]= vec[i];
}

plot->setData(vx, vy, vec.size());

plot->attach(myPlot);
layout->addWidget( myPlot );

replot();


But now there are two plot, and one is on top of the other, but a little bit shifted.
Can you help me with this?

Greetings from germany, Ozzy

[Ozzy]

Hi,

i guess I know whats wrong
class Plot : public QwtPlot
Thats, why he paint the second graph. But what can I do? If I use something like QFrame, then repaint() is unknown...

MfG, Ozzy

Ok, it works. But I'm interest, if theres a better way to go...

Ozzy