topic How to use replacement node to replace null with zero? in SAS Data Science

How to use replacement node to replace null with zero?

ken88 — Wed, 08 Oct 2014 18:34:28 GMT

How to use replacement node to replace null with zero?

cannot google it, only find replace zero with missing

Thank you

Re: How to use replacement node to replace null with zero?

OS2Rules — Wed, 08 Oct 2014 19:50:40 GMT

I think you are looking for OPTION MISSING=0;

Re: How to use replacement node to replace null with zero?

BrettWujek — Wed, 08 Oct 2014 20:32:35 GMT

Ken - Another option for you may be to use the Impute node to replace all missing values throughout the data set with 0. This node does not offer the same level of control over the replacement criteria on a per variable basis as the Replacement node does, but it does provide other possibly more meaningful options for the replacement value (other than a default constant like 0). If you haven't already, you may want to consider imputing missing values with the Impute node. It all depends on how you intend to analyze the data.

To use the Impute node to simply replace all missing values (for all variables) with 0, set the "Default Input Method" (or Default Target Method) to "Default Constant Value" and set the desired value in the entry provided below that.

Good luck with your analysis.

Brett

Re: How to use replacement node to replace null with zero?

jakarman — Wed, 08 Oct 2014 21:34:08 GMT

NuLL is not equal to missing. The concepts in a RDBMS and statistical environment are different. What are you doing?

Re: How to use replacement node to replace null with zero?

ken88 — Wed, 15 Oct 2014 13:29:52 GMT

Thank for letting me know, basically I have null in the field revenue from client, and it is null because it cannot find any revenue, so they can be replace with 0.

I then will do a cluster analysis

Thank You