Thank you and apologies--I did not make it clear that there are no NAs mixed in with the valid values. Rather, they all occur consecutively, either toward the beginning of end of the column. Jim
I didn't know what you wanted to do if there were NA's in the middle of a column. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com
Any ideas? Thanks Jim Bouldin, PhD Research Ecologist Department of Plant Sciences, UC Davis Davis CA, 95616 530-554-1740
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Jim Bouldin, PhD Research Ecologist Department of Plant Sciences, UC Davis Davis CA, 95616 530-554-1740