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Bug 1820

Summary: Side by Side Bars overlap
Product: FireMonkey TeeChart Reporter: yeray alonso <yeray>
Component: SeriesAssignee: Steema Issue Manager <issuemanager>
Status: CONFIRMED ---    
Severity: major CC: marc, sandra
Priority: Normal    
Version: unspecified   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
URL: http://www.teechart.net/support/viewtopic.php?f=17&t=16485
Chart Series: Bar Delphi / C++ Builder RAD IDE Version: RAD 10.1 Berlin
Attachments: test project

Description yeray alonso 2017-03-16 10:18:28 EDT 
Created attachment 735 [details]
test project

As the customer shows in a screenshot, some of the bars overlap when side by side.
See the attached project.

It looks as if the bars were drawn in the wrong order.

Works fine in VCL.
Comment 1 sandra pazos 2017-06-07 06:55:46 EDT 
Update. 
The problem occurs when is set the Xvalues property Order to Descending.   E.g:
Chart1[0].XValues.Order := loNone;
Chart1[1].XValues.Order := loDescening;
Comment 2 yeray alonso 2017-06-08 03:28:11 EDT 
The problem appears when you set a Descending order to the XValues on the second bar series. Also happens in VCL:

uses Series;

var Series1, Series2: TBarSeries;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Series1:=Chart1.AddSeries(TBarSeries) as TBarSeries;
  Series1.FillSampleValues;

  Series2:=Chart1.AddSeries(TBarSeries) as TBarSeries;
  Series2.XValues.Order := loDescending;
  Series2.FillSampleValues;
end;

The workaround is to set the order back to Ascending:

procedure TForm1.Button1Click(Sender: TObject);
begin
  Series2.XValues.Order:=loAscending;
  Series2.XValues.Sort;

  Chart1.Repaint;
end;