#### functions in charts

```Is it possible to enter a user-defined function (that
returns an array) for values in a chart instead of
specifying a range in the worksheet?
```
 0
bergevj (3)
9/12/2003 4:49:48 PM
excel.charting 18370 articles. 0 followers.

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```Joe -

You can specify a named range, with the formula built in.  See the
Dynamic Chart examples and links on my web site:

http://www.geocities.com/jonpeltier/Excel/Charts/Dynamics.html

A good example of a formula in a named range can be found on Stephen
Bullen's site:

http://bmsltd.co.uk

Look for the ChtFmla.xls example.  Tushar mehta has a similar example on
his site:

http://tushar-mehta.com

In VBA it's possible to assign an array to the data values in a chart,
but you are limited in the number of points you can include without errors.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
http://www.geocities.com/jonpeltier/Excel/index.html
_______

Joe wrote:
> Is it possible to enter a user-defined function (that
> returns an array) for values in a chart instead of
> specifying a range in the worksheet?

```
 0
jonpeltier (303)
9/12/2003 5:05:26 PM
```[This followup was posted to microsoft.public.excel.charting with an
email copy to Joe.
Please use the newsgroup for further discussion.]

Yes, in a limited fashion.  Named formulas cannot be parameterized.
So, about the best one can do is the following.

Suppose you define a UDF as:

Function YVals(x As Range)
Dim y As Variant, i As Long
ReDim y(1 To x.Cells.Count)
For i = 1 To UBound(y)
y(i) = x(i) ^ 2
Next i
YVals = y
End Function

Then, define an XL name as
YvalsName	=yvals(Sheet1!\$A\$1:\$A\$12)

Now, plot YvalsName in a chart.  As you change A1:A12, the chart will
change.

You can take it a step further.  Change the definition of YvalsName to
YvalsName	=yvals(OFFSET(Sheet1!\$A\$1,0,0,COUNTA(Sheet1!\$A:\$A),1))

Now, as you add or delete contiguous data points starting with A1, the
chart will also change.

--
tutorial 'Outlook Express and Newsgroups' on my web site

Regards,

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

In article <287401c3794d\$e0d257f0\$a601280a@phx.gbl>,
bergevj@wellsfargo.com says...
> Is it possible to enter a user-defined function (that
> returns an array) for values in a chart instead of
> specifying a range in the worksheet?
>
```
 0
ng_poster (159)
9/15/2003 9:38:22 PM

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