我正在 C# WPF 应用程序中实现一些实时图表,但我使用的是 WinForms 图表,因为它们通常易于使用并且性能出奇地好。
无论如何,除了一个我一生都无法弄清楚的主要问题外,我的图表工作得很好:
当我向图表添加数据时,它有时会自行调整大小。有时它会这样做很多,给自己带来摆动并使图表阅读和处理起来非常烦人。
我的问题是:我怎样才能防止这个该死的图表不断调整自己的大小?!
一些附加信息:
该图表包含在我的 XAML 中:
<WindowsFormsHost Grid.Row="1" Grid.ColumnSpan="2" Margin="5">
<winformchart:Chart Dock="Fill" x:Name="Session0Chart">
<winformchart:Chart.ChartAreas>
<winformchart:ChartArea/>
</winformchart:Chart.ChartAreas>
</winformchart:Chart>
</WindowsFormsHost>
通过以下方式初始化:
// initialize it!
chart.Palette = ChartColorPalette.Bright;
// setup the labels
Font monoSpaceFont = new Font("Consolas", 10);
chart.ChartAreas[0].AxisX.LabelStyle.Font = monoSpaceFont;
chart.ChartAreas[0].AxisY.LabelStyle.Font = monoSpaceFont;
// set the axis limits appropriately
chart.ChartAreas[0].AxisY.Maximum = 600;
chart.ChartAreas[0].AxisY.Minimum = -200;
// set up grid lines and axis styles
chart.ChartAreas[0].AxisX.MinorGrid.Enabled = true;
chart.ChartAreas[0].AxisX.MinorGrid.LineDashStyle = ChartDashStyle.Dash;
chart.ChartAreas[0].AxisX.MinorGrid.LineColor = System.Drawing.Color.Gray;
chart.ChartAreas[0].AxisX.MinorGrid.Interval = 0.04;
chart.ChartAreas[0].AxisX.LabelStyle.Format = "F2";
chart.ChartAreas[0].AxisX.LabelAutoFitStyle = LabelAutoFitStyles.None;
chart.ChartAreas[0].AxisY.MajorGrid.Enabled = true;
chart.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = ChartDashStyle.Solid;
chart.ChartAreas[0].AxisY.MajorGrid.Interval = 200;
chart.ChartAreas[0].AxisY.LabelAutoFitStyle = LabelAutoFitStyles.None;
chart.ChartAreas[0].AxisY.LabelStyle.Format = "F0";
chart.Series.Clear();
Series s = new Series();
s.ChartType = SeriesChartType.FastLine;
chart.Series.Add(s);
chart.Refresh();
数据点通过以下方式添加:
// if we get too many points, remove the head
if (session.Chart.Series[0].Points.Count >= Properties.Settings.Default.ECGDataPoints)
{
session.Chart.Series[0].Points.RemoveAt(0);
}
// add the points
for (int i = data.samples.Length - 1; i >= 0; i--)
{
session.Chart.Series[0].Points.AddXY(session.ecgT, data.samples[i]);
session.ecgT += session.ECGPeriod / (double)data.samples.Length;
}
// only look at the last few seconds
session.Chart.ChartAreas[0].AxisX.Maximum = session.ecgT;
session.Chart.ChartAreas[0].AxisX.Minimum = session.ecgT - Properties.Settings.Default.ECGTimeWindow;
如果您能提供任何帮助,我们将非常感谢,这让我发疯太久了!
最佳答案
您应该将 X 轴设置为 DateTime
,而不是 double
。无论如何,这是一个心电图......
摆动是由 X 轴增加 0.10000000001234 等值引起的。
// No wiggle
chartNoWiggle.Series[0].Points.AddXY(xdatetime, r.NextDouble());
if (chartNoWiggle.Series[0].Points.Count > 10)
chartNoWiggle.Series[0].Points.RemoveAt(0);
chartNoWiggle.ChartAreas[0].AxisX.Minimum = chartNoWiggle.Series[0].Points[0].XValue;
chartNoWiggle.ChartAreas[0].AxisX.Maximum = xdatetime.ToOADate();
xdatetime = xdatetime.AddMinutes(1);
// Wiggle
chartWiggle.Series[0].Points.AddXY(xdouble, r.NextDouble());
if (chartWiggle.Series[0].Points.Count > 10)
chartWiggle.Series[0].Points.RemoveAt(0);
chartWiggle.ChartAreas[0].AxisX.Minimum = chartWiggle.Series[0].Points[0].XValue;
chartWiggle.ChartAreas[0].AxisX.Maximum = xdouble;
xdouble += 0.10000000001234;
关于c# - 如何治愈C# winforms图表的摆动?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35733426/