如何在 y-axis 上方设置图表标题？
How to set chart title above y-axis?
我一直在试验图表，到目前为止我得到了这个实验代码：
static void Main(string[] args)
{
Random rnd = new Random();
Chart thisChart = new Chart();
thisChart.Height = 400;
thisChart.Width = 500;
thisChart.BackColor = SystemColors.Window;
thisChart.Palette = ChartColorPalette.EarthTones;
thisChart.Titles.Add("Test");
thisChart.Visible = true;
ChartArea ca = new ChartArea();
ca.Name = "Default";
ca.BackColor = Color.White;
ca.BorderColor = Color.FromArgb(26, 59, 105);
ca.BorderWidth = 0;
ca.BorderDashStyle = ChartDashStyle.Solid;
ca.AxisX = new Axis();
ca.AxisY = new Axis();
thisChart.ChartAreas.Add(ca);
Series series = thisChart.Series.Add("Default");
series.ChartType = SeriesChartType.Spline;
series.ChartArea = "Default";
series.Points.AddXY("1", 20);
series.Points.AddXY("2", 25);
series.Points.AddXY("3", 30);
series.Points.AddXY("4", 35);
series.Points.AddXY("5", 40);
series.Points.AddXY("6", 45);
//SetPosition for multiple Y-axis labels
thisChart.ChartAreas["Default"].Position = new ElementPosition(25, 10, 68, 85);
thisChart.ChartAreas["Default"].InnerPlotPosition = new ElementPosition(10, 0, 90, 80);
// Create extra Y axis for second and third series
Series series2 = thisChart.Series.Add("Series2");
series2.ChartType = SeriesChartType.Spline;
series2.ChartArea = "Default";
series2.Points.AddXY("1", 50);
series2.Points.AddXY("2", 55);
series2.Points.AddXY("3", 60);
series2.Points.AddXY("4", 70);
series2.Points.AddXY("5", 75);
series2.Points.AddXY("6", 80);
//series2.Legend = "Default";
thisChart.Series["Series2"].ChartArea = "Default";
CreateYAxis(thisChart, thisChart.ChartAreas["Default"], thisChart.Series["Series2"], 13, 8);
// Create extra X axis for second and third series
Series series3 = thisChart.Series.Add("Series3");
series3.ChartType = SeriesChartType.Spline;
series3.ChartArea = "Default";
series3.Points.AddXY("1,5", 75);
series3.Points.AddXY("2,5", 175);
series3.Points.AddXY("3,5", 300);
series3.Points.AddXY("4,5", 75);
series3.Points.AddXY("5,5", 150);
series3.Points.AddXY("6,6", 125);
thisChart.Series["Series3"].ChartArea = "Default";
CreateXAxis(thisChart, thisChart.ChartAreas["Default"], thisChart.Series["Series3"], -10, 8);
//thisChart.DataBind();
thisChart.SaveImage(@"C:\Temp\TestChart.png", ChartImageFormat.Png);
}
private static 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;
areaSeries.AxisY.TitleAlignment = StringAlignment.Far;
areaSeries.AxisY.TextOrientation = TextOrientation.Horizontal;
areaSeries.AxisY.Title = "Y-axis Title1";
areaSeries.AxisY.TitleForeColor = Color.Blue;
areaSeries.AxisY.TitleFont = new Font("Tahoma", 7, FontStyle.Bold);
areaSeries.AxisY.Maximum = 300;
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());
areaAxis.AxisY.TitleAlignment = StringAlignment.Center;
areaAxis.AxisY.Title = "Y-axis Title";
areaAxis.AxisY.TitleForeColor = Color.Blue;
areaAxis.AxisY.TitleFont = new Font("Tahoma", 7, FontStyle.Bold);
areaAxis.AxisY.TitleAlignment = StringAlignment.Far;
areaAxis.AxisY.TextOrientation = TextOrientation.Horizontal;
areaAxis.AxisY.Maximum = 200;
// 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;
}
private static void CreateXAxis(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.AxisY.MajorGrid.Enabled = false;
areaSeries.AxisY.MajorTickMark.Enabled = false;
areaSeries.AxisY.LabelStyle.Enabled = false;
areaSeries.AxisX.MajorGrid.Enabled = false;
areaSeries.AxisX.MajorTickMark.Enabled = false;
areaSeries.AxisX.LabelStyle.Enabled = false;
areaSeries.AxisX.IsStartedFromZero = area.AxisX.IsStartedFromZero;
series.ChartArea = areaSeries.Name;
// Create new chart area for axis
ChartArea areaAxis = chart.ChartAreas.Add("AxisX_" + 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.AxisY.LineWidth = 0;
areaAxis.AxisY.MajorGrid.Enabled = false;
areaAxis.AxisY.MajorTickMark.Enabled = false;
areaAxis.AxisY.LabelStyle.Enabled = false;
areaAxis.AxisX.MajorGrid.Enabled = false;
//areaAxis.AxisX.IntervalOffset = Convert.ToDouble("0,5");
areaAxis.AxisX.IsStartedFromZero = area.AxisX.IsStartedFromZero;
areaAxis.AxisX.LabelStyle.Font = area.AxisX.LabelStyle.Font;
areaAxis.AxisX.CustomLabels.Add(0, 1, "0.5");
areaAxis.AxisX.CustomLabels.Add(1, 2, "1.5");
areaAxis.AxisX.CustomLabels.Add(2, 3, "2.5");
areaAxis.AxisX.CustomLabels.Add(3, 4, "3.5");
areaAxis.AxisX.CustomLabels.Add(4, 5, "4.5");
areaAxis.AxisX.CustomLabels.Add(5, 6, "5.5");
areaAxis.AxisX.CustomLabels.Add(6, 7, "6.5");
// Adjust area position
areaAxis.Position.Y -= axisOffset;
areaAxis.InnerPlotPosition.Y += labelsSize;
}
这会产生以下结果：
问题：
我不知道如何使标题在相应 y-axis 上方对齐，有什么想法吗？
我不认为你会那样做。
Afaik 推荐的解决方法是添加更多图表 Titles。
您可以像往常一样设置它们的样式并将它们移动到轴的顶部，您可以将它们对齐到相应 Chartearea.InnerPlotPosition:
的左上角
ChartArea ca1 = thisChart.ChartAreas[0];
RectangleF rip1 = ca1.InnerPlotPosition.ToRectangleF();
Title ty1 = thisChart.Titles.Add("ty1");
ty1.Text = "Y-Axis 1\nTitle";
ty1.ForeColor = Color.DarkSlateBlue;
ty1.Position.X = rip1.Left;
ty1.Position.Y = rip1.Y;
确保图表顶部有足够的 space 标题..
请注意，所有 ElementPositions 的值，包括 InnerPlotPosition 都在相应 容器 [=34= 的 % 中]，即 InnerPlotPosition 的 ChartArea 和 ChartArea 的 Chart..
我一直在试验图表，到目前为止我得到了这个实验代码：
static void Main(string[] args)
{
Random rnd = new Random();
Chart thisChart = new Chart();
thisChart.Height = 400;
thisChart.Width = 500;
thisChart.BackColor = SystemColors.Window;
thisChart.Palette = ChartColorPalette.EarthTones;
thisChart.Titles.Add("Test");
thisChart.Visible = true;
ChartArea ca = new ChartArea();
ca.Name = "Default";
ca.BackColor = Color.White;
ca.BorderColor = Color.FromArgb(26, 59, 105);
ca.BorderWidth = 0;
ca.BorderDashStyle = ChartDashStyle.Solid;
ca.AxisX = new Axis();
ca.AxisY = new Axis();
thisChart.ChartAreas.Add(ca);
Series series = thisChart.Series.Add("Default");
series.ChartType = SeriesChartType.Spline;
series.ChartArea = "Default";
series.Points.AddXY("1", 20);
series.Points.AddXY("2", 25);
series.Points.AddXY("3", 30);
series.Points.AddXY("4", 35);
series.Points.AddXY("5", 40);
series.Points.AddXY("6", 45);
//SetPosition for multiple Y-axis labels
thisChart.ChartAreas["Default"].Position = new ElementPosition(25, 10, 68, 85);
thisChart.ChartAreas["Default"].InnerPlotPosition = new ElementPosition(10, 0, 90, 80);
// Create extra Y axis for second and third series
Series series2 = thisChart.Series.Add("Series2");
series2.ChartType = SeriesChartType.Spline;
series2.ChartArea = "Default";
series2.Points.AddXY("1", 50);
series2.Points.AddXY("2", 55);
series2.Points.AddXY("3", 60);
series2.Points.AddXY("4", 70);
series2.Points.AddXY("5", 75);
series2.Points.AddXY("6", 80);
//series2.Legend = "Default";
thisChart.Series["Series2"].ChartArea = "Default";
CreateYAxis(thisChart, thisChart.ChartAreas["Default"], thisChart.Series["Series2"], 13, 8);
// Create extra X axis for second and third series
Series series3 = thisChart.Series.Add("Series3");
series3.ChartType = SeriesChartType.Spline;
series3.ChartArea = "Default";
series3.Points.AddXY("1,5", 75);
series3.Points.AddXY("2,5", 175);
series3.Points.AddXY("3,5", 300);
series3.Points.AddXY("4,5", 75);
series3.Points.AddXY("5,5", 150);
series3.Points.AddXY("6,6", 125);
thisChart.Series["Series3"].ChartArea = "Default";
CreateXAxis(thisChart, thisChart.ChartAreas["Default"], thisChart.Series["Series3"], -10, 8);
//thisChart.DataBind();
thisChart.SaveImage(@"C:\Temp\TestChart.png", ChartImageFormat.Png);
}
private static 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;
areaSeries.AxisY.TitleAlignment = StringAlignment.Far;
areaSeries.AxisY.TextOrientation = TextOrientation.Horizontal;
areaSeries.AxisY.Title = "Y-axis Title1";
areaSeries.AxisY.TitleForeColor = Color.Blue;
areaSeries.AxisY.TitleFont = new Font("Tahoma", 7, FontStyle.Bold);
areaSeries.AxisY.Maximum = 300;
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());
areaAxis.AxisY.TitleAlignment = StringAlignment.Center;
areaAxis.AxisY.Title = "Y-axis Title";
areaAxis.AxisY.TitleForeColor = Color.Blue;
areaAxis.AxisY.TitleFont = new Font("Tahoma", 7, FontStyle.Bold);
areaAxis.AxisY.TitleAlignment = StringAlignment.Far;
areaAxis.AxisY.TextOrientation = TextOrientation.Horizontal;
areaAxis.AxisY.Maximum = 200;
// 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;
}
private static void CreateXAxis(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.AxisY.MajorGrid.Enabled = false;
areaSeries.AxisY.MajorTickMark.Enabled = false;
areaSeries.AxisY.LabelStyle.Enabled = false;
areaSeries.AxisX.MajorGrid.Enabled = false;
areaSeries.AxisX.MajorTickMark.Enabled = false;
areaSeries.AxisX.LabelStyle.Enabled = false;
areaSeries.AxisX.IsStartedFromZero = area.AxisX.IsStartedFromZero;
series.ChartArea = areaSeries.Name;
// Create new chart area for axis
ChartArea areaAxis = chart.ChartAreas.Add("AxisX_" + 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.AxisY.LineWidth = 0;
areaAxis.AxisY.MajorGrid.Enabled = false;
areaAxis.AxisY.MajorTickMark.Enabled = false;
areaAxis.AxisY.LabelStyle.Enabled = false;
areaAxis.AxisX.MajorGrid.Enabled = false;
//areaAxis.AxisX.IntervalOffset = Convert.ToDouble("0,5");
areaAxis.AxisX.IsStartedFromZero = area.AxisX.IsStartedFromZero;
areaAxis.AxisX.LabelStyle.Font = area.AxisX.LabelStyle.Font;
areaAxis.AxisX.CustomLabels.Add(0, 1, "0.5");
areaAxis.AxisX.CustomLabels.Add(1, 2, "1.5");
areaAxis.AxisX.CustomLabels.Add(2, 3, "2.5");
areaAxis.AxisX.CustomLabels.Add(3, 4, "3.5");
areaAxis.AxisX.CustomLabels.Add(4, 5, "4.5");
areaAxis.AxisX.CustomLabels.Add(5, 6, "5.5");
areaAxis.AxisX.CustomLabels.Add(6, 7, "6.5");
// Adjust area position
areaAxis.Position.Y -= axisOffset;
areaAxis.InnerPlotPosition.Y += labelsSize;
}
这会产生以下结果：
问题：
我不知道如何使标题在相应 y-axis 上方对齐，有什么想法吗？
我不认为你会那样做。
Afaik 推荐的解决方法是添加更多图表 Titles。
您可以像往常一样设置它们的样式并将它们移动到轴的顶部，您可以将它们对齐到相应 Chartearea.InnerPlotPosition:
ChartArea ca1 = thisChart.ChartAreas[0];
RectangleF rip1 = ca1.InnerPlotPosition.ToRectangleF();
Title ty1 = thisChart.Titles.Add("ty1");
ty1.Text = "Y-Axis 1\nTitle";
ty1.ForeColor = Color.DarkSlateBlue;
ty1.Position.X = rip1.Left;
ty1.Position.Y = rip1.Y;
确保图表顶部有足够的 space 标题..
请注意，所有 ElementPositions 的值，包括 InnerPlotPosition 都在相应 容器 [=34= 的 % 中]，即 InnerPlotPosition 的 ChartArea 和 ChartArea 的 Chart..