[英]Creating a chart with multiple Y axis (3 or more)
我有一個客戶需要使用超過 2 個 Y 軸的圖表。
我已經在使用具有內置 Y2 軸的組件一 (C1Chart) 圖表,並且效果很好。
有誰知道可以在圖表上顯示 3 個或更多 Y 軸的圖表控件?
Microsoft 圖表控件的示例環境包含多個 Y 軸的示例。
部分代碼:
private void checkBoxUseMultipleYAxis_CheckedChanged(object sender, System.EventArgs e)
{
if(checkBoxUseMultipleYAxis.Checked)
{
// Set custom chart area position
Chart1.ChartAreas["Default"].Position = new ElementPosition(25,10,68,85);
Chart1.ChartAreas["Default"].InnerPlotPosition = new ElementPosition(10,0,90,90);
// Create extra Y axis for second and third series
CreateYAxis(Chart1, Chart1.ChartAreas["Default"], Chart1.Series["Series2"], 13, 8);
CreateYAxis(Chart1, Chart1.ChartAreas["Default"], Chart1.Series["Series3"], 22, 8);
}
else
{
// Set default chart areas
Chart1.Series["Series2"].ChartArea = "Default";
Chart1.Series["Series3"].ChartArea = "Default";
// Remove newly created series and chart areas
while(Chart1.Series.Count > 3)
{
Chart1.Series.RemoveAt(3);
}
while(Chart1.ChartAreas.Count > 1)
{
Chart1.ChartAreas.RemoveAt(1);
}
// Set default chart are position to Auto
Chart1.ChartAreas["Default"].Position.Auto = true;
Chart1.ChartAreas["Default"].InnerPlotPosition.Auto = true;
}
}
public void CreateYAxis(Chart chart, ChartArea area, Series series, float axisOffset, float labelsSize)
{
// Create new chart area for original series
ChartArea areaSeries = chart.ChartAreas.Add("ChartArea_" + series.Name);
areaSeries.BackColor = Color.Transparent;
areaSeries.BorderColor = Color.Transparent;
areaSeries.Position.FromRectangleF(area.Position.ToRectangleF());
areaSeries.InnerPlotPosition.FromRectangleF(area.InnerPlotPosition.ToRectangleF());
areaSeries.AxisX.MajorGrid.Enabled = false;
areaSeries.AxisX.MajorTickMark.Enabled = false;
areaSeries.AxisX.LabelStyle.Enabled = false;
areaSeries.AxisY.MajorGrid.Enabled = false;
areaSeries.AxisY.MajorTickMark.Enabled = false;
areaSeries.AxisY.LabelStyle.Enabled = false;
areaSeries.AxisY.IsStartedFromZero = area.AxisY.IsStartedFromZero;
series.ChartArea = areaSeries.Name;
// Create new chart area for axis
ChartArea areaAxis = chart.ChartAreas.Add("AxisY_" + series.ChartArea);
areaAxis.BackColor = Color.Transparent;
areaAxis.BorderColor = Color.Transparent;
areaAxis.Position.FromRectangleF(chart.ChartAreas[series.ChartArea].Position.ToRectangleF());
areaAxis.InnerPlotPosition.FromRectangleF(chart.ChartAreas[series.ChartArea].InnerPlotPosition.ToRectangleF());
// Create a copy of specified series
Series seriesCopy = chart.Series.Add(series.Name + "_Copy");
seriesCopy.ChartType = series.ChartType;
foreach(DataPoint point in series.Points)
{
seriesCopy.Points.AddXY(point.XValue, point.YValues[0]);
}
// Hide copied series
seriesCopy.IsVisibleInLegend = false;
seriesCopy.Color = Color.Transparent;
seriesCopy.BorderColor = Color.Transparent;
seriesCopy.ChartArea = areaAxis.Name;
// Disable drid lines & tickmarks
areaAxis.AxisX.LineWidth = 0;
areaAxis.AxisX.MajorGrid.Enabled = false;
areaAxis.AxisX.MajorTickMark.Enabled = false;
areaAxis.AxisX.LabelStyle.Enabled = false;
areaAxis.AxisY.MajorGrid.Enabled = false;
areaAxis.AxisY.IsStartedFromZero = area.AxisY.IsStartedFromZero;
areaAxis.AxisY.LabelStyle.Font = area.AxisY.LabelStyle.Font;
// Adjust area position
areaAxis.Position.X -= axisOffset;
areaAxis.InnerPlotPosition.X += labelsSize;
}
結果:
我認為您可以嘗試多個 ChartArea,它允許您在同一個圖表對象中安排多個繪圖。
就圖表而言, MS Chart 控件幾乎擁有您所需要的一切。 下載示例,運行它並轉到圖表特征 > 軸 > 多個 Y 軸。 我想你會找到你想要的!
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