topic Re: Length format informat in SAS Programming

Length format informat

Ps8813 — Mon, 22 Feb 2016 20:49:14 GMT

For character variable if i use length statement , it will change format and informat as well.

In numeric variable if ii only use format statement, it will change informat also. But if i only use informat statement it wont change the format.

Re: Length format informat

Reeza — Mon, 22 Feb 2016 20:57:26 GMT

The informat and format don't have to match.

I'm also not clear on what your trying to ask, can you please clarify your question?

Re: Length format informat

Steelers_In_DC — Mon, 22 Feb 2016 21:57:07 GMT

You use informat to tell SAS how to read input, it has nothing to do with the display. Format is how SAS will display your data and has nothing to do with how SAS reads the data from the source.

Re: Length format informat

Ps8813 — Tue, 23 Feb 2016 04:26:11 GMT

Data test1;

length x $32 ;

format y 4.;

informat z 4.;

run;

In above case , we have 3 variables x ,y, z.

After running the code we will get the below attributes of variables:-

X:- length $32

informat $32.

format $32.

y:- length 8

informat 4.

format 4.

z:- length 8

informat 4.

format best12.

If u will check Y and Z variable. U can see that for 'Y' format statement has changed informat as well.

But for 'Z' variable informat statement has not changed format.

SO my question is why SAS is doing so?

Re: Length format informat

Kurt_Bremser — Tue, 23 Feb 2016 07:06:11 GMT

I can't tell you why SAS is doing it, I can only tell you that SAS has (probably) been doing it this way for a long time. Just keep in mind that it does, and write your code accordingly.

Anytime I need a specific format or informat assigned to a variable, I always write it out explicitly; I never let a computer assume something that could bite me in the ass later.