LoadFromFile RSI Indicator

[Petar]

Hi All,

I can't load a chart consisting of a serie type indicator RSI from a binary file.

The code crashes at : AxTChart.Import.LoadFromFile (tempfile).

And then only for the RSI indicator constructed as follows :

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.Series (NewSerieIndex).DataSource =. Series (SourceSerieIndex)
.Series (NewSerieIndex).SetFunction (TeeChart.EFunctionType.tfRSI)
.Series (NewSerieIndex).FunctionType.Period = Period
.Series (NewSerieIndex).CheckDataSource ()
.Series (NewSerieIndex).FunctionType.asRSI.Style = TeeChart.ERSIStyle.rsiClose

Regards,

[Narcís]

Hi Petar,

You should use a TeeChart native template file (*.tee) here. Is that the kind of file you are using? If so, can you please attach it here?

Thanks in advance.

[Petar]

Here are the piece of code to save in a binary file (here in C:\temp.nova, the file extension doesn't matter because we transcode in binary) :

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Dim tempFile As String = "C:\temp.nova"
AxTChart.Export.asNative.SaveToFile(tempFile, True)

And an extract from LoadChart :

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Dim res As List(Of Byte()) = New List(Of Byte())(ChartServiceController.Instance.Service.ReadFromDB(RequestName))
Dim tempFile As String = "C:\temp.nova"
Dim sw As New StreamWriter(tempFile)
sw.Close()
Dim fs = New FileStream(tempFile, FileMode.Open, FileAccess.Write)
fs.Write(res(0), 0, res(0).Length)
fs.Close()
AxTChart.Import.LoadFromFile(tempFile)

I recall that the LoadFromFile method works with other indicators but not RSI.

I attached the file temp.zip

[Narcís]

Hi Petar,

Thanks for the information. Loading your file using this code:

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    TChart1.Import.LoadFromFile "C:\temp\temp.tee"

I get this error message:

No valid DataSource: Series0

This is because template files don't store datasources as they may not be available in the location where you load the template. Therefore you need to set datasources to null before exporting the chart and assign them manually after loading.

[Petar]

Can you give a code example ?

PS : I have the follow error, knowing that the code works well with others indicators :

Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))

The error highlighted row stopped at Axtchart.Import.LoadFromFile(tempFile)..

Thanks

[Petar]

Hi,

I recall you that the LoadFromFile works with other indicators / Functions, but not with the RSI.

Functions type like MACD, Stochastic, Momentum, PVO works well.

In my code, I have a generic function where I set the native functions.

I add a specific line of code in the case of a function rsi :

Code: Select all

.Series(NewSerieIndex).DataSource = .Series(SourceSerieIndex)
.Series(NewSerieIndex).SetFunction(FuncType)
.Series(NewSerieIndex).FunctionType.Period = Period
.Series(NewSerieIndex).CheckDataSource()

If FuncType = TeeChart.EFunctionType.tfRSI Then
.Series(NewSerieIndex).FunctionType.asRSI.Style = TeeChart.ERSIStyle.rsiClose
Endif

[Petar]

Hi,

Did you have time to look into this issue ?

Regards,

[Yeray]

Hi Petar,

I've tried to reproduce the problem with the following simple example:

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Private Sub Form_Load()
  TeeCommander1.Chart = TChart1
  
  TChart1.Aspect.View3D = False

  TChart1.Axis.Left.EndPosition = 49
  TChart1.AddSeries scCandle
  TChart1.Series(0).FillSampleValues 100

  TChart1.Axis.AddCustom False
  TChart1.Axis.Custom(0).StartPosition = 51
  TChart1.Axis.Custom(0).EndPosition = 74
  TChart1.AddSeries scLine
  TChart1.Series(1).SetFunction tfRSI
  TChart1.Series(1).DataSource = TChart1.Series(0)
  TChart1.Series(1).FunctionType.Period = 10
  TChart1.Series(1).VerticalAxisCustom = 0

  TChart1.Axis.AddCustom False
  TChart1.Axis.Custom(1).StartPosition = 76
  TChart1.Axis.Custom(1).EndPosition = 100
  TChart1.AddSeries scLine
  TChart1.Series(2).SetFunction tfStochastic
  TChart1.Series(2).DataSource = TChart1.Series(0)
  TChart1.Series(2).FunctionType.Period = 10
  TChart1.Series(2).VerticalAxisCustom = 1

  TChart1.Export.SaveToFile "C:\tmp\test1.tee"
End Sub

With it, I have a file test1.tee that I can load without problems with the following:

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Private Sub Form_Load()
  TeeCommander1.Chart = TChart1

  TChart1.Import.LoadFromFile "C:\tmp\test1.tee"
End Sub

And both the RSI and the Stochastic functions seems to loaded as expected.

If you still have problems with it, please try to arrange a simple example project we can run as-is to reproduce the problem here.