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benderrr

Germany
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Posted - 02/15/2005 :  08:17:23 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hello,
I would like to fill a column with the difference of two successive numbers of another one, say col(A).
In order to do that, I clicked "Set column values" and entered

col(B)=col(A[i+1])-col(A[i])

However, this does not work. What did I do wrong?
Thanks for your help,
benderrr

cpyang

USA
1406 Posts
Posted - 02/15/2005 :  08:29:41 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
col(B)=col(a)[i+1]-col(a)[i]


or better yet, there is a function Diff

col(B)=diff(col(a))


CP
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