Archive of Mr Excel Message Board
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Graphs for Microsoft Office Excel 2007

Range("A2").Select
Selection.QueryTable.Refresh BackgroundQuery:=False
Range("D1").Select
Selection.QueryTable.Refresh BackgroundQuery:=False
Range("C2").Select
If Range("C2") = "<1" Then Range("C2").ClearContents
:: End Sub

Hi Rosie
If you go to my web site and look at the links "Chart Tips and Tricks" and "Dynamic Named Ranges" you my see some ideas that you could adopt.
Dave
OzGrid Business Applications

Look what happens when you attempt to chart
=SERIES("Y",,{1,2,"",4},1). It changes to
=SERIES("Y",,{1,2,0,4},1). That's your problem.
Now try =SERIES("Y",,{1,2,#N/A,4},1). Look! No
problem. #N/A in a chart series allows allow you
to interpolate a line across data gaps.

Mark, I hope you didn't pinch idea from my web page :o)
As Mark has said (and my web page) Excel will not plot #N/A. Or =NA(). It also will not plot hidden Rows/Columns.
Dave
OzGrid Business Applications

Mark, Dave:
Thank you both. Problem solved.
