change color during a loop

[21did21]

Hello world,

i have K curve on a plot and i want to change the color for each curves but i don't know how i can made this

Me code it's here:

for ( int k = 0 ; k < NbOfCurve ; ++k )
    {
            mycurve[0+k*nombreDoublePlot]->attach( myPlot1 );
            mycurve[0+k*nombreDoublePlot]->setStyle( QwtPlotCurve::Dots );
            mycurve[0+k*nombreDoublePlot]->setPen( QPen( Qt::blue, 2) );
}

for ( int k = 0 ; k < NbOfCurve ; ++k )
    {
            mycurve[0+k*nombreDoublePlot]->attach( myPlot1 );
            mycurve[0+k*nombreDoublePlot]->setStyle( QwtPlotCurve::Dots );
            mycurve[0+k*nombreDoublePlot]->setPen( QPen( Qt::blue, 2) );
}

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This code plots all the curve in blue, however i want differents color for each iteration

can you help me please

[SixDegrees]

So you want the call to setPen() to take a different argument each time? If that's the case, store your colors in an array and call setPen(colorArray[k],2). Or, if there are more curves than colors, call setPen(colorArray[k % numberOfColors],2).

[21did21]

thank for your help, i think i will use this solution