Guidelines

What is MONOTONIC in SAS?

by Rhyley Bryan

What is MONOTONIC in SAS?

The MONOTONIC function is an undocumented SAS function. The function counts the number of times it is called and returns an ascending sequence of integers, starting at 1. The function can be used in an expression and is syntactically valid in both a DATA Step and an SQL procedure.

What is _N_ in SAS?

Each time the DATA step loops past the DATA statement, the variable _N_ increments by 1. The value of _N_ represents the number of times the DATA step has iterated. You can use the value of this variable to help locate errors in data records and to print an error message to the SAS log .

How do I sum a group in SAS?

Obtaining a Total for Each BY Group

  1. include a PROC SORT step to group the observations by the Vendor variable.
  2. use a BY statement in the DATA step.
  3. use a Sum statement to total the bookings.
  4. reset the Sum variable to 0 at the beginning of each group of observations.

How does group by work in SAS?

The GROUP BY clause groups data by a specified column or columns. When you use a GROUP BY clause, you also use an aggregate function in the SELECT clause or in a HAVING clause to instruct PROC SQL in how to summarize the data for each group. PROC SQL calculates the aggregate function separately for each group.

When did SAS add the monotonic function to proc?

SAS added the MONOTONIC () function BEFORE that definition of windowing functions for the SQL language was even created. To implement ROW_NUMBER () SAS should create a flavor of SQL using a more recent standard. They could either do it as a new PROC or perhaps as an option in PROC SQL.

What is the function monotonic in Proc SQL?

FUNCTION MONOTONIC( ) IN PROC SQL The automatic variable _N_ in DATA step processing counts the number of times the DATA step begins to iterate. It’s very useful when you need the iteration number from the DATA step.

Is there way to acheive a monotonic ( ) function?

I would like to create a monotonic () function that would go from 1 to n based on another variable such that if i have a dataset with years, it goes from 1 to x for 2012, 1 to y for 2013, 1 to z for 2014 and so on… is there a way to acheive that? I tried the “group” by function but no luck!

How to group data by columns in SAS?

The GROUP BY clause groups data by a specified column or columns. When you use a GROUP BY clause, you also use an aggregate function in the SELECT clause or in a HAVING clause to instruct PROC SQL in how to summarize the data for each group.

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