RapidMiner

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Community Manager Community Manager
Community Manager

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

Scott Genzer
Senior Community Manager
RapidMiner, Inc.
3 REPLIES
RM Staff
RM Staff
Solution

Re: difference of values

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

--------------------------------------------------------------------------
Head of Data Science Services at RapidMiner
Community Manager Community Manager
Community Manager

Re: difference of values

Perfect.  Thank you Martin!


Scott

 

Scott Genzer
Senior Community Manager
RapidMiner, Inc.
RM Certified Expert
RM Certified Expert

Re: difference of values

Try the lag operator!

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