If the cell contains a formula, it's not an empty cell. There's no way for a
formula to make Excel think it's an empty cell. The NA() is a trick that
works for line and XY charts, because it suppresses plotting of a point. It
is the equivalent of the Interpolate option of the Plot Empty Cells setting,
so a line connecting points passes across the gap.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
http://PeltierTech.com
_______


"Kirsty W" wrote in message
...
Hiya

Vlookup is getting the data into the table that feeds the line graph.

=VLOOKUP($B$2,ebookings!$A$4:H31,'Overview - by Cust'!H$99,FALSE)

Even if I put NA() in the cells that the Vlookup is using to get data,
which
means NA() is appearing in the table from which the graph feeds, the
options
to 'Plot Empty Cells' are still greyed out.

"David Biddulph" wrote:

Whatever formula you're using to generate your cell contents, if it's
currently setting the result to "", get it to set to NA() instead. [If
you
then also want to use conditional formatting to make the N/A# cells look
empty, you can do so.]
--
David Biddulph

"Kirsty W" wrote in message
...
I have a a line graph that displays customer behaviour in a number of
categories. The data source for the graph is a table that refreshes
every
time a different 'customer' is selected from a macro drop-down list
above
the
table, drawing data from another table.

All the blank cells from the table are plotted as zero on the line
graph,
and I can't seem to change it so that the blank cells are not plotted
on
the
line graph at all. I've tried going to ToolsOptionsChart, but the
'Plot
empty cells as' options are all greyed out except for the 'Zero'
option-
which I don't want!

Can anyone help......

Thanks