Functions and How to Stop using them ?

[hansw]

I have a moving average function working (thanks Josep) .

Now when the export data is called there are two columns in the data file !

I just want the original and not the moving average data. !

How can I stop exporting the moving average data ?

I suspect it's a call is needed to turn off the moving average function, but the tutorial does not explain how to do that !

Thanks

[Pep]

Have you set the Series that you want to export using :

Code: Select all

    VARIANT TheSeries;
    TheSeries.vt=VT_I2;
    TheSeries.intVal=0;
     
    m_chart.GetExport().GetAsText().SetSeries(TheSeries);
    m_chart.GetExport().GetAsText().SaveToFile("c:\\mydata.txt");	

Josep LLuis Jorge
http://support.steema.com

[hansw]

The code sample you gave works fine, however
I'm allowing the user to select the format using

m_Chart1.GetExport().ShowExport();

That still exports the raw data and the moving average data.

How do I force the ShowExport() dialog to only use the data I want it to use ?

[Christopher]

Hi -

The code sample you gave works fine, however
I'm allowing the user to select the format using

m_Chart1.GetExport().ShowExport();

That still exports the raw data and the moving average data.

How do I force the ShowExport() dialog to only use the data I want it to use ?

You could remove the unwanted data (series) from the chart before calling IExport.ShowExport, e.g. (sorry for the VB code, but the TeeChart objects, properties, methods and events are identical in VC++):

Code: Select all

Private Sub Command1_Click()
With TChart1
    .RemoveSeries 1
    .Export.ShowExport
    
    .AddSeries scLine
    .Series(1).DataSource = "Series0"
    .Series(1).SetFunction (tfMovavg)
    .Series(1).FunctionType.Period = 1
End With
End Sub

Private Sub Form_Load()
With TChart1
    .Aspect.View3D = False
    .AddSeries scCandle
    .Series(0).FillSampleValues 20
    
    .AddSeries scLine
    .Series(1).DataSource = "Series0"
    .Series(1).SetFunction (tfMovavg)
    .Series(1).FunctionType.Period = 1
End With
End Sub

[hansw]

VB code

With TChart1
.RemoveSeries 1
.Export.ShowExport
....

I think it's something like

m_Chart1.Series(1).RemoveSeries();

Does not compile there is no function RemoveSeries();

I hate VB it sucks...

[Marjan]

Or you could simply set series/function ParentChart property to null. In effect, doing the same as RemoveSeries.

[hansw]

series/function ParentChart property to null

Sounds like a real elegant way to do this...

I've tried just about every "hint" in the VC IDE but found nothing that looks like ParentChart...