XL has a limit on how many characters it will accept in the string for
either the x- or the y-values. I don't remember exactly what it is but
it is either around 250 characters or 450 characters. You could always
put the data in a worksheet range and specify the range as the chart
source.

--
Regards,

Tushar Mehta
www.tushar-mehta.com
Excel, PowerPoint, and VBA add-ins, tutorials
Custom MS Office productivity solutions

In article .com,
says...
Hi

I am trying to generate a chart from VBA arrays, but I am finding that
once the arrays become too large I get the following runtime error:

Run-time error '1004':
Unable to set the XValues property of the Series class

A simple piece of code which reproduces the error:

Option Base 1
Sub test()
Const nPts As Long = 81 'if increase this to = 82, doesn't work!
Dim x(nPts) As Double, y(nPts) As Double
Dim i As Long

For i = 1 To nPts
x(i) = i
y(i) = i
Next i

'Create graph
Set Graph = ActiveSheet.ChartObjects.Add _
(Left:=100, Width:=375, Top:=75, Height:=225)

Graph.Activate

'Plot Data
With ActiveChart.SeriesCollection.NewSeries
.Name = "Data"
.XValues = x
.Values = y
.ChartType = xlXYScatter
End With
End Sub

This is with Excel 2003.
Any help with be fantastic!
Jonathan