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Bug 1285 - Histogram sort Y does not work after source value changing
Summary: Histogram sort Y does not work after source value changing
Status: CONFIRMED
Alias: None
Product: VCL TeeChart
Classification: Unclassified
Component: Functions (show other bugs)
Version: 150420
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Steema Issue Manager
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-08-31 04:01 EDT by Bert Kreisel
Modified: 2015-08-31 08:11 EDT (History)
1 user (show)

See Also:
Chart Series: Line
Delphi / C++ Builder RAD IDE Version: RAD XE5

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Description Bert Kreisel 2015-08-31 04:01:43 EDT 
Let a Histogram funktion series be sorted by "Y".
After Changing the values of the source series (change the number of sample values of a random serie) the Histogram series is no longer sorted by "Y". (It will be sorted again after changing the sort settings.)
Comment 1 sandra pazos 2015-08-31 08:11:25 EDT 
Hello Bert,

Thanks for your requests. We can reproduce it. Seems the problem is caused, because, is necessary use the CheckOrder method in design-time. We will try to fix it to upcoming version of TeeChart Pro VCL/FMX.  Meantime, you can use the code below in runtime to fix the problem:

type
  TForm1 = class(TForm)
    Chart1: TChart;
    Series1: TBarSeries;
    Series2: TFastLineSeries;
    TeeFunction1: THistogramFunction;
    TeeCommander1: TTeeCommander;
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
Series1.FillSampleValues(10);
Series2.YValues.Order := loAscending;
Series2.CheckOrder;
end;