sas program editor

8月 262017
 

News flash: My favorite SAS code editor is SAS Enterprise Guide. However, my favorite general purpose text editor is Notepad++, and I often find myself using that tool for viewing SAS log files and for making small modifications to SAS programs. Judging from the popularity of this SAS Support Communities discussion, I'm not alone. In this post, I'll share the steps for turning Notepad++ into a more useful home for SAS programs.

You can download Notepad++ for Windows from here -- you can use it for free, no cost. That's one reason that it's one of the first tools that I install on any new PC I get my hands on!

1. Associate SAS files with Notepad++

You accomplish this in the usual way with Windows. In Windows Explorer, right-click (or SHIFT+right-click depending on your setup) on a .SAS file (SAS program), and select Open with...

Open with menu

► You might see Notepad++ in the menu, but don't select it, Instead, select Choose another app.

Choose another app

► In this menu, select Notepad++ and check the "Always use this app" checkbox.

Repeat this step for SAS program logs (.LOG files) and listing output (.LST files) if you want.

2. Run a SAS program from Notepad++

You can add new program actions to the Run menu in Notepad++. Here's how to add a command to run a SAS program, if you have SAS for Windows installed. Note: These steps assume that the SAS program is open in Notepad++ and is saved in a file.

► Select Run... from the Run menu. In the program to run field, enter this command:

"C:\Program Files\SASHome\SASFoundation\9.4\sas.exe" -sysin "$(FULL_CURRENT_PATH)" -log "$(CURRENT_DIRECTORY)\$(NAME_PART).log" -print "$(CURRENT_DIRECTORY)\$(NAME_PART).lst"

all on one line. You might need to adjust the SAS.EXE path for your install. The command options use some Notepad++ environment variables to direct the SAS log and listing output to the same path as the SAS program file.

Click Save (not Run).

Click Save

Optionally, assign a shortcut key to the action, and name it "Run program file in SAS" (or whatever you want). This adds the command to your Run menu.

Run in SAS command

When you select it, Notepad++ will launch SAS, run your program in batch, and direct the output to the same folder where the program is stored.

3. Adding SAS syntax color coding to Notepad++

It's simple to "teach" Notepad++ to recognize the keywords from SAS and other languages. You can download new language definitions files from here -- follow the instructions on the page to have your Notepad++ recognize them. I've created an expanded definition file that includes more SAS keywords (many, many more!) -- you can grab that from my GitHub repo here.

Here's what SAS code looks like in my Notepad++:

my Notepad++ SAS look

What else?

I'm sure that some of you have spent more time than I have in creating a souped-up Notepad++ environment, or perhaps you've taken it to another level with other popular editors like Sublime or Vim or UltraEdit. If you have other tips to share, I'd love to hear from you in the comments.

The post Using Notepad++ as your SAS code editor appeared first on The SAS Dummy.

7月 032017
 

If you spend a lot of time in SAS Enterprise Guide (as I do), you probably get to know its features pretty well. But we don't always take the time to explore as we should, so there might be a few golden nuggets of editor knowledge that have escaped you so far. Here are 10 program editor features that I've found essential while writing, editing, and debugging SAS programs. How many of these do you already know and use?

1. Turn on the line numbers

We programmers like to count lines of code. The SAS log often uses line numbers to reference problems in WARNINGs and ERRORs. So of course, you should have line numbers displayed in the program editor. But they aren't on by default. Go to Program → Editor Options and select "Show line numbers" to turn them on.

line numbers

2. Get the tabs out (or leave them in)

Tabs or spaces? Your choice here can have a significant effect on your earning potential, and perhaps even on your love life. Most code editors have options that support your choice, regardless of which camp you choose. SAS Enterprise Guide offers these:

  • Tab size - width of a tab character, represented in number of spaces. Default is 4, but I like to use 2 as it makes my program lines less wide.
  • Insert spaces for tabs - when you press the TAB key, don't add a TAB character but instead add the specified number of space characters.
  • Replace tabs with spaces on file open - a perfect passive-aggressive option when working with team members who disagree with your TAB world view. This option will change TAB characters to spaces when you open the program file. If you must retain the TAB characters...well, my main advice is do not rely on TAB characters in your code file. But if you must for some crazy reason, don't select this option and sign a pact with your teammates for the same.

tabs vs spaces

3. Define abbreviations for commonly used code

The most common code snippet that I reuse is a LIBNAME statement that points to my project data. To save on typing and mistakes, I've saved this as an editor abbreviation. When I begin to type the alias I've assigned to the snippet, the program editor offers to complete it for me. The custom abbreviation is presented along side all of the other built-in syntax suggestions.

abbrev animation

See more about editor abbreviations in this article.

4. Let the editor format your code

As shown in the vigorous "TABS vs spaces" debate, programmers care deeply about how their code is formatted. Individuals and teams adopt various standards for line breaks and indenting, and these are usually particular to the programming language. In general, SAS doesn't care how your code is laid out -- statements are delimited by semicolons, and that's the only cue that SAS needs. However, your teammates (and your future YOU, rereading your code) might appreciate something a little more readable.

Press Ctrl+I to format your entire program, applying some reasonable readability rules to indent code lines with conditionals and looping logic. Or select just a portion of the program and press Ctrl+I to affect a smaller part of the program. You can adjust some of the formatting rules by visiting Program → Editor Options, the Indenter tab.

autoformat code

5. Zoom out for the big picture

Some SAS programs are long -- hundreds (or thousands!) of lines of code. Sometimes it's helpful to get a birds-eye view of your code to understand its structure and to help you navigate. The Zoom feature is super helpful for this. Simply press Ctrl+- (control-minus) until you get the view you need. Press Ctrl++ (control-plus) to zoom back in, or press Ctrl+0 to get to the 100% view.

This trick works for SAS logs as well, and also data sets and ODS output (including text listing, which uses the program editor in a special mode for viewing SAS output).

zoom out

6. Change the program editor font

Want to waste an afternoon? Search the Internet for "best font for programmers" and experiment with all of the results that you find. I discovered Consolas (built into Microsoft Windows) a decade ago, and I've yet to find anything better. I use it for all of my "fixed font" needs: programming, terminal windows, command consoles, etc. But you can choose your own favorite -- just don't feel that you're stuck with the default "Courier" that seems to be standard issue.

Change your font in Programs → Editor Options, Appearance tab. You'll find lots of elements that you can tweak for typeface, size and color.

7. Select columns of content with block selection

Even though column block selection -- also known as "Alt+Select" -- is a standard feature in most advanced text editors, many programmers don't know about it. It's the perfect trick for selecting just a few columns of your text without including the content that's on the rest of the line. In SAS programming, this can be handy for selecting columns of values from the text listing output and pasting somewhere else, such as into a DATALINES block. It takes a little practice to master the Alt+Select, but once you do you'll find all sorts of uses for it. To get started, simply hold down the Alt key and click-drag to highlight a vertical column of text within the editor.

column selection animation

8. Find (and replace) using regular expressions

Regular expressions are a powerful, if confusing, method for finding and replacing text that matches certain patterns. The Find/Find and Replace window in SAS Enterprise Guide supports "Regular expression search" as a checkbox option.

Here's an example. Suppose I wanted to find all occurrences of 3 numbers after the thousands separator (comma) at the end of each data line -- and I wanted to turn those digits into zeros. (I don't know why--but just stick with me here.) A regex pattern to match this is ",\d\d\d\n" (comma, followed by 3 occurrences of numeric digits, followed by a line ending). Here's an animation of this in action.

regex replace animation

For more, select Help→SAS Enterprise Guide help and search for "regular expressions". The help topics contain several examples of useful patterns.

9. Scroll just part of your document using a split view

Do you find yourself scrolling back and forth in your program view? Trying to remember what was in that DATA step at the top of your program so you can reference the proper variable in another part of your code? Instead of dealing with "scrolling whiplash", you can split the program editor view to keep one part of your code always visible while you work on another code segment that's hundreds of lines away from it.

split view

There are several ways to split your view of SAS code, log output, and listing. Check out the article here for details.

10. Break out to your other favorite editor

Please don't tell anyone, but I have a secret: SAS Enterprise Guide is not my default application associated with .SAS files. When I double-click on a .SAS file in Windows Explorer, I like to use Notepad++ to provide a quick view of what's in that program file. Don't get me wrong: I use SAS Enterprise Guide for all of my serious SAS programming work. With syntax suggestions, color coding, built-in DATA step debugger, and more -- there just isn't a better, more full-featured environment. (No, I'm not trying to troll you, diehard SAS display manager users -- you keep using what makes you happy.) But Notepad++ has a deep set of text editing features, and sometimes I like to use it for hardcore find/replace functions, deeper inspection of special characters in my files, and more.

You can launch your program into your other favorite editor from SAS Enterprise Guide. Simply right-click on the program node in your process flow, select Open → Open <program name> with Windows Default. And make sure your other editor is registered in Windows as the default "Open with" action for SAS programs. Note: this trick works only with SAS programs that you've saved locally on your Windows file system.

Open with default

More than editing -- this is your workbench

The program editor isn't just about "editing programs." It's also the launchpad for several other programmer-centric features, such as debugging your DATA step, comparing your SAS programs, viewing program history and source control, and more. If you use SAS Enterprise Guide, take the time to learn about all of its programming features -- you'll become a more productive programmer as a result.

The post Ten SAS Enterprise Guide program editor tricks appeared first on The SAS Dummy.

10月 292013
 

Okay, given the title of this article, I might be overselling the content a bit. Read on to see if your life will be transformed.

I've just returned from SESUG, and this question came up during one of the presentations. While this tip might seem basic, it was news to many of the people in the room, so I think it's worth sharing here.

Background
The "old school" style of SAS programming uses upper case for all SAS keywords. But, unlike many newer programming languages, the SAS language is not case-sensitive. These three programs are exactly the same in the eyes of SAS:

/* This is your grandpa's SAS program */
/* Before the shift key was invented  */
PROC MEANS DATA=SASHELP.CLASS
  MEAN MODE;
RUN;
 
/* lower case, unassuming */
proc means data=sashelp.class
  mean mode;
run;
 
/* Headline-style initial caps */
Proc Means Data=Sashelp.Class
  Mean Mode;
Run;

Even though the uppercase style is old-fashioned, it's the style used by SAS Enterprise Guide tasks. When users copy and paste these generated programs into their own code projects, they often want to convert the keywords to lowercase. Do you need to retype the program? Of course not. Any program editor worth its salt offers basic reformatting features, and the SAS program editor is no exception.

Here are 5 examples of quick keystrokes that can save you time.

Convert case
Convert selected text to upper case: Ctrl + Shift + U
Convert selected text to lower case: Ctrl + Shift + L

Quick commenting
Wrap selection (or current line) in a comment: Ctrl + /
Unwrap selection (or current line) from a comment: Ctrl + Shift + /

Hyperjump to a line
Go to line: Ctrl + G (prompts for a line number)
Be sure to turn on Show line numbers in Program->Editor Options, or you'll be navigating blind!

Jump to the "end of scope"
Move caret to matching parenthesis/brace: Ctrl + [, Ctrl + ]
Move caret to matching DO/END keyword: Alt + [, Alt + ]

There are dozens of other shortcut keys and commands available in the program editor. In SAS Enterprise Guide, you can view them all by selecting Program->Enhanced Editor Keys. From this window you can customize the keypress behaviors to your liking, and you can also combine commands and assign them to new keys. If you're a "keyboard person", then you'll want to visit this window and explore. Be sure to click "Include commands without key assignments" to see the full list of available commands.

There are many useful commands that don't have a default key mapping. For example, one very handy command is "Sort selected lines", which will resequence the selected lines into ascending alphabetical order. If that's an operation you need to do frequently, click the Assign Keys button to pick a key sequence as a shortcut.

You can also combine commands with editor macros. For example, would you like a keystroke that can add a date/time stamp as a program comment? Simple! Select Program->Editor Macros->Macros. Then click Create... to build a new sequence. Add the commands you want to automate, and then finish by assigning the new macro to a key sequence. To insert a commented date/time stamp, these are the commands to add:

  • Insert current date and time
  • Comment the selected lines with line comment

Here's what the window looks like:

I assigned Alt+Shift+D to this command, and when I press it just now I get:


While my instructions here apply to SAS Enterprise Guide, this is all available in SAS for Windows when you use the Enhanced Editor. There are several conference papers on the topic: here's one from Art Carpenter.

See also

Take SAS program editor abbreviations to the next level
Hope for ugly programs: the SAS Enterprise Guide code formatter

tags: SAS Enterprise Guide, SAS program editor
11月 182011
 

Rick posted a tip today about using abbreviations in the SAS program editor window (often referred to as the "enhanced editor"). Defining abbreviations is a great way to save keystrokes and re-use "templates" of code that you've squirreled away. (One of Rick's readers also picked up on the tip, and added it to his blog.)

If you use SAS Enterprise Guide 4.3, you can define those abbreviations even easier, and you can call them up just like any other part of the SAS syntax, using the autocomplete features of the program editor. Here's how.

1. Open a SAS program window (by opening an existing program or select File->New->Program)

2. Select Program->Add Abbreviation Macro

3. In the Add Abbreviation Macro window, type a short name for your code snippet, and then add the code you want to substitute when the abbreviation is triggered. Bonus: the code field in this window also features the SAS program editor that helps you to complete the valid syntax.

4. To use the abbreviation, simply type the abbreviation within your program. The editor will automatically "suggest" the abbreviation as a possibility as you type, and you can press the spacebar to commit the selection, just as with any other suggested keyword. If you hover the mouse cursor over the suggestion, you can see a preview of the text that will be substituted in. Note that the abbreviation entry shows as a special item (green diamond instead of blue square in this case), as another hint that this element is different than the built-in syntax. (Were the autocomplete icons inspired by our bowl of Lucky Charms one morning? I'll never tell.)

You don't have to rely on the autocomplete feature of the editor to get to your abbreviation. You can do as Rick suggests and assign a shortcut key by selecting Program->Enhanced Editor Keys. However, I'd stay away from Ctrl+I, as that currently maps to what I call the "indenter servant" -- the SAS code formatter. (But hey, you can change that key assignment too!)

tags: abbreviations, SAS Enterprise Guide, SAS program editor, SAS programming, SAS tips
2月 042011
 
Millions of Americans will be gathering around the television this Sunday to watch Super Bowl XLV. They'll gather in bars and private homes, prepare billions of calories worth of snacks, and root for their favorite teams.

But if you're looking for an alternate form of entertainment, why not watch "New Goodies for the SAS Programmer in SAS Enterprise Guide"? It's educational and family friendly; I promise that it doesn't feature any racy advertisements.

The recording of this SAS Talks webinar is now available for anyone to view. During the live session last week, we received lots of questions via the Q&A chat panel. These have been answered and summarized on this follow-up page for the webinar, which includes links to many other related resources.

If, after watching it, you have more questions, you can cruise over to the SAS Enterprise Guide discussion forum and ask the community. I'm not sure how many of them will be signed in this Sunday evening...perhaps only those that are Buffalo Bills fans like me.

12月 242010
 
A customer phoned up SAS Technical Support the other day with a problem. (Yes, that happens occasionally...) When he ran a certain program through SAS Enterprise Guide, the program didn't seem to complete and no results were returned. Here is a snippet of the program (modified a bit to make it less proprietary) :
  1. proc sql noprint;
  2.   connect to teradata as tera2
  3.   (user=&user pw=&password server=&server
  4.   mode=teradata FASTEXPORT=YES);
  5.   create table buyers as
  6.     select * from connection to tera2
  7.      (select id,
  8.         trxn_dt,
  9.         sum (ln_itm_qty) as Items,
  10.         sum (ext_prc_amt as Sales
  11.         from store.linetrxn a
  12.           join cust.indv_xref b
  13.           on a.rid = b.rid
  14. /* remainder removed for brevity */
Can you spot the problem? Other than the use of a user ID and password, which can be avoided, what else is wrong with this program? Why does it fail to finish?

The SAS code formatter in SAS Enterprise Guide 4.3 can tell you. Click Ctrl+I, and the code formatter scans your program and attempts to indent it for proper readability. But for this program, it stops short of that with this message:

Formatting Error
Please check for an unmatched parenthesis on line 7.

Now you know: there is an unmatched parenthesis! And every SAS programmer knows that a missing parenthesis, unmatched quote, or missing semicolon can cause problems for the SAS language parser. (Rick Wicklin calls this a "parse-time error" in his post about finding and fixing programming errors.)

But where is the unmatched paren in this program? The message says "line 7", but line 7 looks okay. There is an open paren for the inner SELECT clause. But starting there, there must be a missing matching parenthesis within the clause. To find it, use the arrow keys in the program editor to navigate the program and visit every parenthesis character in the region. The program editor in SAS Enterprise Guide 4.3 highlights the matching parentheses pairs as you navigate:

See the matches

You can also use the Ctrl+[ (open bracket) key to move the cursor from one parenthesis to its match, if there is one. If no match can be found, the program editor emits a friendly beep to tell you, "sorry, can't find a match".

In this example, you don't have to look further than line 10, where the programmer has left off a closing parenthesis. The line should read: sum (ext_prc_amt) as Sales.

People are really starting to appeciate the new SAS program editor (including the formatter). Earlier this week I received an unsolicited phone call from a SAS programmer (who happens to work at SAS). She was calling just to say that this feature is "AWESOME" and that it has saved her countless hours as she maintains legacy SAS programs. Angela Hall also highlights it in her blog about real-world BI experiences.

I love to hear these stories. Have you started using SAS Enterprise Guide 4.3 yet? What do you like about it? And what could be improved? Let us know, either here in the comments or via SAS Technical Support.