Decades on Logarithmic Axis?

ellab_user · Post by **ellab_user** » Thu Feb 09, 2006 2:52 pm

When setting an axis to logarithmic, the grid spacing just gets smaller and smaller until max or min and shows values between decades. A logarithmic chart usually decreases grid spacing within decades and shows only decade values. Is there any way to achieve this?
Thanks

Narcís · Post by **Narcís** » Thu Feb 09, 2006 3:08 pm

Hi ellab_user,

Using TeeChart Pro v7.0.0.6 ActiveX and the code below I cannot see what you report. Could you please tell me which TeeChart version you are using and what we should do to reproduce the problem here? If you want you can post an example or a screen-shot at [url]news://www.steema.net/steema.public.attachments[/url] newsgroup.

Code: Select all

Private Sub Form_Load()
    TChart1.Series(0).FillSampleValues 1000
    TChart1.Axis.Left.Logarithmic = True
End Sub

ellab_user · Post by **ellab_user** » Thu Feb 09, 2006 3:31 pm

I'm using TeeChart ActiveX version 6

Narcís · Post by **Narcís** » Thu Feb 09, 2006 4:34 pm

Hi ellab_user,

I'm unable to reproduce this problem here using latest v6 version. Could you please send us an example we can run "as-is" or a screen-shot of the problem you are reporting?

Thanks in advance.

ellab_user · Post by **ellab_user** » Fri Feb 10, 2006 7:45 am

This is basically how we want it to look:
http://www.123hjemmeside.dk/walleco/2332302?i=2824926

This is what we get with TeeChart
http://www.123hjemmeside.dk/walleco/2332302?i=2824929

I hope this helps

Thanks

ellab_user · Post by **ellab_user** » Fri Feb 10, 2006 7:46 am

This is basically how we want it to look:
http://www.123hjemmeside.dk/walleco/2332302?i=2824926

This is what we get with TeeChart
http://www.123hjemmeside.dk/walleco/2332302?i=2824929

I hope this helps

Thanks

Narcís · Post by **Narcís** » Fri Feb 10, 2006 10:18 am

Hi ellab_user,

I've posted an image of what I get trying to reproduce the wrong chart you posted. The image I posted is at the attachments newsgroup ([url]news://www.steema.net/steema.public.attachments[/url]) and the message subject is the same as this forums thread. Could you please check it?

ellab_user · Post by **ellab_user** » Fri Feb 10, 2006 11:16 am

Our ISP news server does not seem to have news://www.steema.net/steema.public.attachments

Is there any other free news server that may carry it?

Narcís · Post by **Narcís** » Fri Feb 10, 2006 11:43 am

Hi ellab_user,

You just need to configure your newsreader with www.steema.net being a news server. All the settings are default ones. Then subscribe to the attachments newsgroup.

ellab_user · Post by **ellab_user** » Fri Feb 10, 2006 1:46 pm

OK - I'm not sure what was giving the problem before, but i used the for loop to add data, and now i get the decades

. Is there any way to show grid lines between the decade grid lines?
Thanks

Narcís · Post by **Narcís** » Fri Feb 10, 2006 2:59 pm

Hi ellab_user,

Yes, you can use:

Code: Select all

Private Sub Form_Load()
    Dim NumPoints As Integer

    TeeCommander1.Chart = TChart1

    NumPoints = 10
    For i = 0 To NumPoints
        TChart1.Series(0).Add (NumPoints - i) * (NumPoints - i), "", clTeeColor
    Next

    With TChart1.Axis.Left
        .SetMinMax 0, 1000
        .Logarithmic = True
        .MinorGrid.Visible = True
        .MinorGrid.Color = .GridPen.Color
        .MinorGrid.Style = .GridPen.Style
        .MinorTickCount = 10
    End With
End Sub