示波器控件设计：刻度设计 Qt

横轴设计刻度变化范围1000~0.0001,共取值14个

1000,500,200,100,50,20,10,5,2,1,0.1,0.01,0.001,0.0001

纵轴设计刻度变化范围1e+11~0.0001,共取值38个

QVector<double> xTickScale;
QVector<double> yTickScale;

//横轴
xTickScale.append(1000.0);
for(double a = 100.0;a>=1.0; a= a/10)
{
    xTickScale.append(5*a);
    xTickScale.append(2*a);
    xTickScale.append(1*a);
}
for(double a= 0.1 ; a>=0.0001 ; a= a*0.1)
{
    xTickScale.append(a);
}

//纵轴
yTickScale.append(1e+11);
for(double a= 1e+10; a>=1.0; a= a/10)
{
    yTickScale.append(5*a);
    yTickScale.append(2*a);
    yTickScale.append(1*a);
}
for(double a= 0.1 ; a>=0.0001 ; a= a*0.1)
{
    yTickScale.append(a);
}