data work.frequencycounts; set work.dataset; count+1; by id; if first.id then count=1; run; However, the variable I want is not a running count, it is the final count. proc sql; create table new as select * ,sum(var3) as sum_by_var1 from have group by var1 order by var1 ; run; The code below doesn't work. Manager is a group variable. This is why SAS does not reset the value of count to missing before processing the next observation in the data set. I tried to add In a DATA step, you can create a new variable and assign it a value by using it for the first time on the left side of an assignment statement. I need to create a frequency in variable, not a proc freq output but an actual variable within the dataset. Notice how SAS does not need to be told explicitly the names and types of the new variables; it is able to infer that test1 is a character variable (because of the quotation marks), and that test2 is a numeric variable (because of the unquoted numeric value). The output data set summarizes each patient's activities at the clinic, including his average weight loss and the duration of his treatment. SAS creates new character variables and uses them in a program. I want to create the new group/type variable. SAS determines the length of a variable from its first occurrence in the DATA step. To create a macro variable, use ideas from the articles about concatenating a vector of values into to a string and about using the SYMPUTX subroutine. This tutorial demonstrates how to create or modify a variable.

Almost every SAS programmer has written a DATA step that uses IF-THEN/ELSE logic or the SELECT-WHEN statements to recode variables.Although creating a new variable is effective, it is also inefficient because you have to create a new data set that contains the new variable. Nominally, a simple data step with a single set statement an iteration will correspond to a row in the data set. For example, the variable "color" has 4 values: Red, Green, Black, and White. Ask Question Asked 2 years, 1 month ago. Creating New Variables Using if-then; if-then-else; and if-then-else-then Statements An if-then statement can be used to create a new variable for a selected subset of the observations. Some programmers think that the FIRST.variable and LAST.variable indicator variables require that the data be sorted, but that is not true.
For example, you have existing prices and you need to adjust inflation rate and create new price structure.

There are other variables I would like to retain in the dataset but aren't needed to identify the group.

The new variable is based on other variables. The new variable gets the same type and length as the expression on the right side of the assignment statement. I used the below code create a running count by ID. Define the group and across variables. We discussed SAS Data Set in our last tutorial, now we will be discussing SAS Variable, properties of SAS Variable, SAS Variable types and how we can create variables in SAS. I want to create a new variable "newcolor" which has values "No Color" for Black and White, and "Color" for Red and Green.

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