Use the NA function, instead of an empty string, e.g.:

=IF(ISERROR(D2/D3),NA(),D2/D3)


Spock wrote:
How do I keep a chart from plotting blank cells that have a formula in them?
i.e. =IF(ISERROR(D2/D3),"",D2/D3)


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Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html