difference of values


OK I know there is an easy way to do this but cannot get my brain around it. If I have an attribute that contains integers in ascending order but they are not sequential, how do I create a new attribute that shows the difference between each example and the one before it? For example:
att1 delta
1 ?
3 2
4 1
5 1
17 12
20 3
etc..
Thanks.
Scott
Best Answer
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Scott,
the Lag operator is your friend.
Generally speaking: All operations which requiere cross-example operations are rather in the time series extension than in core.
~Martin
0
Answers
-
Scott,
the Lag operator is your friend.
Generally speaking: All operations which requiere cross-example operations are rather in the time series extension than in core.
~Martin
0 -
Perfect. Thank you Martin!
Scott0 -
Try the lag operator!
0