The other types of DO loops that you can run in a SAS data step are conditional DO loops. There are two forms of conditional DO loops, DO UNTIL loops and DO WHILE loops. DO UNTIL loops execute until the condition you specify becomes true.
Loops with I in SAS?
Data A do i = 1 to 5 y = i**2 /* values are 1, 4, 9, 16, 25 */ output end of run By default, each iteration of a DO instruction increments the counter value by 1. However, you can use the option Use BY to increment the counter by other amounts, including non-integer amounts.
Creating sample loops in SAS?
For example, this DO statement: do jack = 1 to 5 tells SAS to create an index variable called jack, starting at 1, increasing by 1, and ending at 5, so that the values of jack from one iteration to the next are 1 are , 2, 3, 4 and 5.
Are you running a while loop in the SAS macro?
The %DO %WHILE statement tests the condition at the beginning of the loop. If the condition is false when the macro processor first tests it, the %DO %WHILE loop is not repeated.
Loop in SAS PROC SQL?
Using the COUNT function with a DO loop in DATA STEP to create a SAS dataset consisting of a programming language and the INTO clause in PROC SQL allows for the dynamic generation and efficient application of the programming language in multiple scenarios in a longer program.
LOOP an example in SAS?
For example, this DO statement: do jack = 1 to 5 tells SAS to create an index variable called jack, starting at 1, increasing by 1, and ending at 5, so that the values of jack from one iteration to the next are 1 are , 2, 3, 4 and 5.
Are you running a while loop in the SAS macro?
The %DO %WHILE statement tests the condition at the beginning of the loop. If the condition is false when the macro processor first tests it, the %DO %WHILE loop is not repeated.
Loop in SAS PROC SQL?
Using the COUNT function with a DO loop in DATA STEP to create a SAS dataset consisting of a programming language and the INTO clause in PROC SQL allows for the dynamic generation and efficient application of the programming language in multiple scenarios in a longer program.
LOOP in SAS macros?
Suppose you need to iterate over a variable based on input defined in a macro. %macro report (input=, var = , class=) %let n=%sysfunc(countw(&var))
How to make a while loop in SAS?
The DO UNTIL statement repeatedly executes statements in a DO loop until a condition is true, checking the condition after each iteration of the DO loop. The DO WHILE statement evaluates the condition at the beginning of the loop, the DO UNTIL statement evaluates the condition at the end of the loop. 19
Loop to in SAS example?
Example: Using a DO UNTIL Statement to Repeat a Loop These statements repeat the loop until N is greater than or equal to 5. At the end of the loop, the expression N>=5 is evaluated. There are five iterations in total (0, 1, 2, 3, 4). 19
loops loops?
Because do-while loops test the condition after the block has executed, the test structure is often referred to as a post-test loop. Unlike the while loop, which tests the condition before executing the code in the block, the while loop is an exit condition loop.