Question

我对编程很陌生，希望你能帮助我。我的任务是创建一个ChartGraph，我正在读取一个txt文件，它将x轴作为样本。我想要的是在我的X-aixs上有时间，在每个样本之间我有3毫秒

我的代码：

private void Se_livefeed_Load(object sender, EventArgs e)
    {
        List<double> dataList = opsamling.getList();

        int blockSize = 1000;

        // clear the chart
        chart1.Series.Clear();

        // fill the chart
        var series = chart1.Series.Add("EKG");
        series.ChartType = SeriesChartType.Line;
        series.XValueType = ChartValueType.Int32;
        for (int i = 0; i < dataList.Count; i++)
            series.Points.AddXY(i, dataList[i]);


        var chartArea = chart1.ChartAreas[series.ChartArea];

        // set view range to [0,max]
        chartArea.AxisX.Minimum = 0;
        chartArea.AxisX.Maximum = dataList.Count;

        // enable autoscroll
        chartArea.CursorX.AutoScroll = true;

        // let's zoom to [0,blockSize] (e.g. [0,100])
        chartArea.AxisX.ScaleView.Zoomable = true;
        chartArea.AxisX.ScaleView.SizeType = DateTimeIntervalType.Number;
        int position = 0;
        int size = blockSize;
        chartArea.AxisX.ScaleView.Zoom(position, size);

        // disable zoom-reset button (only scrollbar's arrows are available)
        chartArea.AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.SmallScroll;

        // set scrollbar small change to blockSize (e.g. 100)
        chartArea.AxisX.ScaleView.SmallScrollSize = blockSize;

    }

Answer 1

您必须将索引转换为要用于x轴的单位。例如，如果要以毫秒显示它，并且因为每个样本（索引）之间有3毫秒：

    series.XValueType = ChartValueType.Int32;
    for (int i = 0; i < dataList.Count; i++)
        series.Points.AddXY(3 * i, dataList[i]);

    var chartArea = chart1.ChartAreas[series.ChartArea];

    // set view range to [0,max]
    chartArea.AxisX.Minimum = 0;
    chartArea.AxisX.Maximum = dataList.Count * 3;

如果您想在几秒钟内显示它：

    series.XValueType = ChartValueType.Double;
    for (int i = 0; i < dataList.Count; i++)
        series.Points.AddXY(0.003 * i, dataList[i]);

    var chartArea = chart1.ChartAreas[series.ChartArea];

    // set view range to [0,max]
    chartArea.AxisX.Minimum = 0;
    chartArea.AxisX.Maximum = dataList.Count * 0.003;

C＃时间值而不是图表图表上的样本

1 个答案: