Never mind. The formula =IF(ISBLANK(C16),"",B15+C16) works.
I was wrong. This still plots 0`s for the cumulative spending
value.
Can anyone help?
try:
=if(c16="",na(),b15+c16)
You can use format|conditional formatting to hide the #n/a's or you could put
this formula in a different column (and use it in the chart), then hide that
column.
(The only chart answer I know!)
There is a dedicated newsgroup for charting, though.
microsoft.public.excel.charting
(If you get more advanced question about charts.)
> Never mind. The formula =IF(ISBLANK(C16),"",B15+C16) works.

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Dave Peterson