Tips and Frequently Asked Questions
Add custom X-axis text programmatically
With the latest version of the TAdvChartView component it is possible to add custom X-Axis text by a new override of the AddSinglePoint method that has a parameter XAxisText.
The sample code snippet here shows how to add a custom numbering as X-axis label text rotated by 40°.
procedure TForm.FormCreate(Sender: TObject); var i: integer; xval: Double; begin with AdvChartView1.Panes[0] do begin //Set range Range.RangeFrom := 0; Range.RangeTo := 100; Range.MaximumScrollRange := 100; Range.MinimumScrollRange := 0; //Set X-Axis size XAxis.Size := 60; //Add points with custom X-Axis text with Series[0] do begin ChartType := ctBar; AutoRange := arEnabledZeroBased; Color := clBlue; ColorTo := clSilver; for I := 0 to 100 do begin xval := 144 + (I * 0.2); AddSinglePoint(RandomRange(20, 100), FloatToStr(xval)); end; //Rotate text XAxis.TextBottom.Angle := 40; //Enabled tickmarks XAxis.TickMarkColor := clBlack; end; end;
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