topic Re: ordering a variable in a custom way in SAS Programming

ordering a variable in a custom way

ilikesas — Sat, 15 Oct 2016 16:34:33 GMT

Hi,

suppose that I have the followng table with the variable item:

item

book

table

apple

And I would like to order in the following way:

item

table

apple

book

please note that the ordering is very custom-specific and I couldn't obtain it with sort by or order by options.

Thank you!

Re: ordering a variable in a custom way

Shmuel — Sat, 15 Oct 2016 17:49:04 GMT

Thaere are several ways to force order of variables:

data want;

/* use RETAIN or LENGTH or FORMAT statement with order desired, for example: */

format item table apple book;

set have;

/* ... any cody if need */

run;

Re: ordering a variable in a custom way

Astounding — Sat, 15 Oct 2016 18:12:14 GMT

There are a couple of ways to go about this. You could create a new variable, and sort by that one. For example:

select (item);

when ('table') sortvar=1;

when ('apple') sortvar=2;

when ('book') sortvar=3;

end;

Then you can sort by SORTVAR.

Technically, you asked how do this without sorting. To do that, you still need to put the observations in order. Here's one way (although you may need to embellish on it to get the result you are looking for):

data table apple book;

set have;

select (item);

when ('table') output table;

when ('apple') output apple;

when ('book') output book;

end;

run;

data want;

set table apple book;

run;

Depending on the report you want in the end, some procedures support ORDER=DATA and will report the ITEMs in the same order as they appear in the data.

Re: ordering a variable in a custom way

ilikesas — Sat, 15 Oct 2016 18:13:17 GMT

Hi Shmuel,

I did the following code:

data want;
format item table apple book;
set have;
run;

But got the same result as before. Also, isn't the retain option for ordering variables? Becasue in my case I have one variable, its the rows within it that I want to re-order.

Thanks!