Qt数据可视化(QScatterSeries散点图)

25-03-07 20:01

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显示效果如下图:

点击不同Mark可以实现其显示或隐藏.

一、数据初始化

QScatterSeries可以通过append方法添加数据,append(x,y).

QScatterSeries的默认形状只有两个 MarkerShapeCircle:圆形, MarkerShapeRectangle:矩形.

默认添加三个QScatterSeries.

 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1">

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class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2">

 class="hljs-ln-code"> class="hljs-ln-line">void Widget::initData() class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line">{
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="4"> class="hljs-ln-code"> class="hljs-ln-line">    QTime randtime;
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="5"> class="hljs-ln-code"> class="hljs-ln-line">    randtime = QTime::currentTime();
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="6"> class="hljs-ln-code"> class="hljs-ln-line">    qsrand(randtime.msec() + randtime.second() * 1000);
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="7"> class="hljs-ln-code"> class="hljs-ln-line">    for (int i = 0; i < 3; i++) {
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="8"> class="hljs-ln-code"> class="hljs-ln-line">        QScatterSeries *mptrScatterSeries = new QScatterSeries();
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="9"> class="hljs-ln-code"> class="hljs-ln-line">        mptrScatterSeries->setName("test" + QString::number(i));
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="10"> class="hljs-ln-code"> class="hljs-ln-line">        for (int j = 0; j < 20; j++) {
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="11"> class="hljs-ln-code"> class="hljs-ln-line">            int x = qrand() % 100;
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="12"> class="hljs-ln-code"> class="hljs-ln-line">            int y = qrand() % 100;
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="13"> class="hljs-ln-code"> class="hljs-ln-line">            mptrScatterSeries->append(x, y);
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="14"> class="hljs-ln-code"> class="hljs-ln-line">        }
 class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="15"> class="hljs-ln-code"> class="hljs-ln-line">        QScatterSeries::MarkerShape mar

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