When making a new piece of code, I like to use the smallest font I can read. This lets me fit more text on the screen at once. When presenting code to others, especially in a classroom setting, I like to make the font large enough to see from the back of the room. Here’s how I change font size in SAS in our three programming interfaces.
Do you periodically delete unneeded global macro variables? You should! Deleting macro variables releases memory and keeps your symbol table clean. Learn how the macro language statement that deletes global macro variables and about the %DELETEALL statement that can be a life saver for macro programmers.
SAS variables are variables in the statistics sense, not the computer programming sense. SAS has what many computer languages call “variables,” it just calls them “macro variables.” Knowing the difference between SAS variables and SAS macro variables will help you write more flexible and effective code.
When speed is required at scale, it's hard to beat parallel processing data in memory with DS2 and SAS® Viya® with the amazing Cloud Analytic Services (CAS)!
If you are a SAS programmer, you may wonder why you should read this. After all isn’t SAS Enterprise Guide just for folks who don’t want to be bothered writing SAS code? SAS Enterprise Guide is just point, click, and get results, right? Well there is a lot more to
SAS Viya is an exciting addition to the SAS Platform, allowing you to conduct analysis faster than ever before and providing you the flexibility to utilize open source technologies and generate insights from data in any computing environment. The blog post “Top 12 Advantages of SAS Viya” does a great
Here's a Proc Print trick for grouped data. Suppose your data is divided into groups, such as males and females. You could sort by the grouping variable before printing, like this: Suppose you want to better emphasize the groups. You could add a BY statement, like this: OK, but, personally,
Suppose you want a list of car manufacturers from the CARS dataset. Easy! Call the %CHARLIST macro from a %PUT statement, like this: The CHARLIST macro generates a list of unique values of a selected variable from a selected dataset. So does PROC FREQ. But, if you don't need statistics, the CHARLIST
Would you like to format your macro variables? Easy! Just use the %FORMAT function, like this: What?! You never heard of the %FORMAT function? Of course not, cuz it doesn't exist! No problem. Just create it, like this: %macro format(value,format); %if %datatyp(&value)=CHAR %then %sysfunc(putc(&value,&format)); %else %left(%qsysfunc(putn(&value,&format))); %mend format; The %FORMAT
In a previous blog, I demonstrated a program and macro that could identify all numeric variables set to a specific value, such as 999. This blog discusses an immensely useful technique that allows you to perform an operation on all numeric or all character variables in a SAS data set.
When I teach my Data Cleaning course, the last topic I cover in the two-day course is SAS Integrity Constraints. I find that most of the students, who are usually quite advanced programmers, have never heard of Integrity Constraints (abbreviated ICs). I decided a short discussion on this topic would
The little SAS program’s official name was Extract_Transform_Load_ 0314.sas. But, that name was much too formal, way too long, and did not roll off of the tongue very easily at all. So, everybody simply called her: ETL Pi. ETL Pi was conceived in a 2-hour project strategy meeting in conference
When developing SAS® data sets, program code and/or applications, efficiency is not always given the attention it deserves, particularly in the early phases of development. Since data sizes and system performance can affect a program and/or an application’s behavior, SAS users may want to access information about a data set’s
I recently asked a SAS user, “Which interface do you use for SAS?” She replied, “Interface? I just install SAS and use it.” “You’re using the SAS windowing environment,” I explained, but she had no idea what I was talking about. This person is an extremely sophisticated SAS user who
What?!? You mean a period (.) isn't the only SAS numeric missing value? Well, there are 27 others: .A .B, to .Z and ._ (period underscore). Your first question might be: "Why would you need more than one missing value?" One situation where multiple missing values are useful involves survey data. Suppose
Art Carpenter’s newest book, Carpenter’s Guide to Innovative SAS Techniques, offers advanced SAS programmers an all-in-one programming reference that includes advanced topics not easily found outside the depths of SAS documentation or more advanced training classes. No matter how you approach the use of SAS software, the techniques provided in
