Hallo SP.,
Ein Beispiel für 3 Y-Achsen findest Du in den downloadbaren WinFormChartSamples:
(s. Contents > Chart Features > Axes > Multiple Y Axes)
http://code.msdn.microsoft.com/mschart/Release/ProjectReleases.aspx?ReleaseId=1591
Hier eine etwas erweiterte Implementation für die gewünschten 4 Achsen (2:2), didaktisch aufbereitet:
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;
namespace ChartMultipleAxis
{
public partial class Form1 : Form
{
private const int MAX_POINTS = 13;
private bool showCharAreaRectangle = true;
private bool showInnerPlotRectangle = true;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) {
PopulateSeries();
CreateAllYAxes();
}
private void PopulateSeries() {
GenerateRandomSeries();
}
private void GenerateRandomSeries() {
Random random = new Random(DateTime.Now.Millisecond);
chart1.Series.Clear();
for (int seriesIndex = 0; seriesIndex < 4; seriesIndex++)
{
Series series = new Series { ChartType = SeriesChartType.Line, BorderWidth = 2 };
chart1.Series.Add(series);
if (seriesIndex % 2 != 0) series.YAxisType = AxisType.Secondary;
}
for (int pointIndex = 0; pointIndex < MAX_POINTS; pointIndex++) {
DateTime dateX = DateTime.Now.Date.AddDays(pointIndex);
for (int seriesIndex = 0; seriesIndex < chart1.Series.Count; seriesIndex++) {
chart1.Series[seriesIndex].Points.AddXY(dateX, random.Next(1, (seriesIndex + 1) * 1000));
}
}
}
private void CreateAllYAxes() {
HideUnnededChartElements();
CreateCustomChartAreaPositions();
CreateAdditionalYAxes();
}
private void HideUnnededChartElements() {
chart1.Legends[0].Enabled = false;
chart1.ChartAreas[0].AxisY.MajorGrid.Enabled = false;
chart1.ChartAreas[0].AxisY2.MajorGrid.Enabled = false;
chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = false;
}
private void CreateCustomChartAreaPositions() {
// Note: All positions are relative
chart1.ChartAreas[0].Position = new ElementPosition(20, 20, 60, 60);
chart1.ChartAreas[0].InnerPlotPosition = new ElementPosition(10, 10, 80, 80);
}
private void CreateAdditionalYAxes() {
DoCreateYAxis(chart1, chart1.ChartAreas[0], chart1.Series[2], 12, 8);
DoCreateYAxis(chart1, chart1.ChartAreas[0], chart1.Series[3], 12, 8);
}
public void DoCreateYAxis(Chart chart, ChartArea area, Series series, float axisOffset, float labelsSize) {
CreateNewChartAreaForOriginalSeries(chart, area, series);
ChartArea areaAxis = CreateNewChartAreaForAxis(chart, series);
CreateHiddenCopyOfOriginalSeries(chart, series, areaAxis);
AdjustChartAreaPosition(area, series, axisOffset, labelsSize, areaAxis);
}
private static void AdjustChartAreaPosition(ChartArea area, Series series, float axisOffset, float labelsSize, ChartArea areaAxis) {
if (series.YAxisType == AxisType.Primary) {
areaAxis.AxisY.MajorGrid.Enabled = false;
areaAxis.AxisY.IsStartedFromZero = area.AxisY.IsStartedFromZero;
areaAxis.AxisY.LabelStyle.Font = area.AxisY.LabelStyle.Font;
areaAxis.Position.X -= axisOffset;
areaAxis.InnerPlotPosition.X += labelsSize;
}
else {
areaAxis.AxisY2.MajorGrid.Enabled = false;
areaAxis.AxisY2.IsStartedFromZero = area.AxisY2.IsStartedFromZero;
areaAxis.AxisY2.LabelStyle.Font = area.AxisY2.LabelStyle.Font;
areaAxis.Position.X += axisOffset;
areaAxis.InnerPlotPosition.X -= labelsSize;
}
}
private static void DisableGridLinesAndTickmarks(ChartArea areaAxis) {
areaAxis.AxisX.LineWidth = 0;
areaAxis.AxisX.MajorGrid.Enabled = false;
areaAxis.AxisX.MajorTickMark.Enabled = false;
areaAxis.AxisX.LabelStyle.Enabled = false;
}
private static void CreateHiddenCopyOfOriginalSeries(Chart chart, Series series, ChartArea areaAxis) {
Series seriesCopy = chart.Series.Add(series.Name + "_Copy");
seriesCopy.ChartType = series.ChartType;
seriesCopy.YAxisType = series.YAxisType;
foreach (DataPoint point in series.Points)
seriesCopy.Points.AddXY(point.XValue, point.YValues[0]);
HideCopiedSeries(areaAxis, seriesCopy);
DisableGridLinesAndTickmarks(areaAxis);
}
private static void HideCopiedSeries(ChartArea areaAxis, Series seriesCopy)
{
seriesCopy.IsVisibleInLegend = false;
seriesCopy.Color = Color.Transparent;
seriesCopy.BorderColor = Color.Transparent;
seriesCopy.ChartArea = areaAxis.Name;
}
private static ChartArea CreateNewChartAreaForAxis(Chart chart, Series series)
{
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());
return areaAxis;
}
private static void CreateNewChartAreaForOriginalSeries(Chart chart, ChartArea area, Series 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;
if (series.YAxisType == AxisType.Primary)
{
areaSeries.AxisY.MajorGrid.Enabled = false;
areaSeries.AxisY.MajorTickMark.Enabled = false;
areaSeries.AxisY.LabelStyle.Enabled = false;
areaSeries.AxisY.IsStartedFromZero = area.AxisY.IsStartedFromZero;
}
else
{
areaSeries.AxisY2.MajorGrid.Enabled = false;
areaSeries.AxisY2.MajorTickMark.Enabled = false;
areaSeries.AxisY2.LabelStyle.Enabled = false;
areaSeries.AxisY2.IsStartedFromZero = area.AxisY2.IsStartedFromZero;
}
series.ChartArea = areaSeries.Name;
}
private void chart1_PostPaint(object sender, ChartPaintEventArgs e)
{
if (showCharAreaRectangle)
{
RectangleF absoluteChartRectangle = e.ChartGraphics.GetAbsoluteRectangle(chart1.ChartAreas[0].Position.ToRectangleF());
e.ChartGraphics.Graphics.DrawRectangle(Pens.Red, absoluteChartRectangle.X, absoluteChartRectangle.Y, absoluteChartRectangle.Width, absoluteChartRectangle.Height);
}
if (showInnerPlotRectangle)
{
RectangleF absoluteInnerPlotRectangle = e.ChartGraphics.GetAbsoluteRectangle(chart1.ChartAreas[0].InnerPlotPosition.ToRectangleF());
e.ChartGraphics.Graphics.DrawRectangle(Pens.Blue, absoluteInnerPlotRectangle.X, absoluteInnerPlotRectangle.Y, absoluteInnerPlotRectangle.Width, absoluteInnerPlotRectangle.Height);
}
}
}
}
Gruß
Marcel
