Tips and Frequently Asked Questions
Using Y-axis values per serie in the chart
Each serie in the chart can have its own Y-axis values. It can be choosen if the Y-axis values for a series should be displayed left or right from the chart. The settings to control this are under Serie.YAxis.Position. When two series have an Y-axis displayed on the same size of the chart, the spacing between the Y-axis itself and value is controlled by Serie.YAxis.MajorUnitSpacing := 30;
In the code sample below, 4 series are added to the chart. Series 1 and 3 have the Y-axis on the left side while series 2 and 4 have the Y-axis on the right side. To make clear what Y-axis belongs to what series, the serie line color is set to the same color as the Y-axis value font.
procedure TForm2.InitChart;
begin
advchartview1.BeginUpdate;
advchartview1.Panes[0].Series.Clear;
with advchartview1.Panes[0].Series.Add do
begin
YAxis.Position := yLeft;
YAxis.MajorUnitSpacing := 30;
YAxis.MajorFont.Color := clRed;
AddSinglePoint(0);
AddSinglePoint(15);
AddSinglePoint(17);
AddSinglePoint(18);
LineColor := clRed;
AutoRange := arEnabled;
end;
with advchartview1.Panes[0].Series.Add do
begin
YAxis.Position := yRight;
YAxis.MajorUnitSpacing := 30;
YAxis.MajorFont.Color := clGreen;
AddSinglePoint(150);
AddSinglePoint(100);
AddSinglePoint(120);
AddSinglePoint(190);
LineColor := clGreen;
AutoRange := arEnabled;
end;
with advchartview1.Panes[0].Series.Add do
begin
YAxis.Position := yLeft;
YAxis.MajorFont.Color := clBlue;
AddSinglePoint(20);
AddSinglePoint(25);
AddSinglePoint(27);
AddSinglePoint(28);
LineColor := clBlue;
AutoRange := arEnabled;
end;
with advchartview1.Panes[0].Series.Add do
begin
YAxis.Position := yRight;
YAxis.MajorFont.Color := clYellow;
AddSinglePoint(250);
AddSinglePoint(200);
AddSinglePoint(210);
AddSinglePoint(380);
LineColor := clYellow;
AutoRange := arEnabled;
end;
advchartview1.Panes[0].YAxis.Position := yBoth;
advchartview1.Panes[0].YAxis.Size := 150;
advchartview1.Panes[0].Range.RangeFrom := 0;
advchartview1.Panes[0].Range.RangeTo := 3;
advchartview1.EndUpdate;
end;Pricing
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