Teechart Properties Produces Incorrect Desired Increment

[DaveB]

For time series, changing the desired increment setting produces an off-by-one error. In other words, setting the dialog to One Week produces tick marks every Three Days and settting the it to One Month produces tick marks every One Week.

[DaveB]

Note that TChart1.GetDateTimeStep(dtOneDay) returns 0.5. I would have expected it to return 1.0.

[Pep]

Hi Dave,

I cannot reproduce the problem here (with the TeeChart v6.0.0.5) using the following code :

Code: Select all

Private Sub Form_Load()
With TChart1
    .AddSeries scLine
    .Series(0).XValues.DateTime = True
    .Axis.Bottom.Labels.Angle = 90
    .Axis.Bottom.Increment = .GetDateTimeStep(dtOneMonth)
    For i = 37700 To 37725
    .Series(0).AddXY i, Rnd * 100, "", clTeeColor
    Next i
End With
End Sub

Private Sub Command1_Click()
MsgBox TChart1.GetDateTimeStep(dtOneDay)
End Sub

Also, it returns 1 to me.
Which TeeChart Pro version are you using ? Also, if you still having problems, could you please post the code you're using so I can reproduce the problem "as is" here ?

[DaveB]

I have found the problem with my C++ code returning the wrong value in the call to GetDateTimeStep(). It seems that TChart has added a new constant to the TeeChartDefines.h file namely dtOneMicrosecond which shifted the other constants by one.

I have e-mailed you a sample project that demonstrates the Teechart properties problem.

[Pep]

Hi Dave,

yes, you're correct , I'm able to reproduce the problem, it's a bug. I've added it on our defect list and a fix it will be considered to inclusion for the next maintenance release. Thanks for the report.