topic Re: Recode values with a suffix in SAS Data Management

Recode values with a suffix

AZIQ1 — Sun, 10 Jan 2016 21:23:02 GMT

I want to create a new variable from the old var that have a suffix eg my original var looks like this:

0000001100

0000110011-11

0010010010

0000100001-12

0000100001-14

I want to code the values with "-" to a new variable 1, and all else as "0"

Thanks

Re: Recode values with a suffix

mohamed_zaki — Sun, 10 Jan 2016 21:38:43 GMT

Show us how your desired output will be, based on the example dataset you gave already?

Re: Recode values with a suffix

AZIQ1 — Sun, 10 Jan 2016 21:44:18 GMT

Old_Variable New_Variable

0000001100 0

0000110011-11 1

0010010010 0

0000100001-12 1

0000100001-14 1

if old_variable has "-" then new_variable = 1;

else "0"

Somthing like this where I can tease out the ones with "-"

Thanks

Re: Recode values with a suffix

mohamed_zaki — Sun, 10 Jan 2016 22:01:20 GMT

if index(old, "-")> 0 then new=1;
Else new=0;

Re: Recode values with a suffix

AZIQ1 — Sun, 10 Jan 2016 21:58:45 GMT

Thank you Thank you - It worked

Best Regards

Re: Recode values with a suffix

AZIQ1 — Sun, 10 Jan 2016 22:04:47 GMT

Just confirming this worked

new = index(old, "-");

Re: Recode values with a suffix

FreelanceReinh — Sun, 10 Jan 2016 22:05:06 GMT

Or without IF-THEN-ELSE:

 new_variable=(index(old_variable,'-')>0);

But you should still keep in mind, that missing values of Old_Variable (if any) would be coded as 0. Depending on what you plan to do with New_Variable, this may or may not be useful.

Re: Recode values with a suffix

mohamed_zaki — Sun, 10 Jan 2016 22:10:36 GMT

Then if "-" found you get the index >=1 based on the first apperance. If that what you want then that is fine.

Re: Recode values with a suffix

FreelanceReinh — Mon, 11 Jan 2016 09:27:16 GMT

Otherwise, you could prefix the function call with a double NOT to obtain a 0-1 flag: new=~~index(old,'-');

(Or new=~~find(old,'-'); to save one more character.)