157 2009: A “SAS® Programmer’s Guide” To SAS® Enterprise Guide® Eg Guide
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Paper 157-2009
®
A “SAS Programmer’s” Guide to the SAS® Enterprise Guide®
Marje Fecht, Prowerk Consulting LLC, Cape Coral, FL
Rupinder Dhillon, Dhillon Consulting Inc., Toronto, ON, Canada
ABSTRACT
You have been programming in SAS for a while….. You have been told “we are moving to Enterprise Guide” and
removing Display Manager”. You say …… I can program everything just fine myself, thank – you!
OR What
am I supposed to do with all these windows?
This paper demonstrates how SAS programmers can use SAS Enterprise Guide as their primary interface to the
SAS system while maintaining the flexibility of writing their own customized code. We will look at
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how to navigate the views and menus
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how SAS Enterprise Guide can be used as your primary SAS Editor
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how you can leverage the more complex built-in capabilities available in SAS Enterprise Guide to further enhance
the information you deliver
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some tips and tricks to get the most out of SAS Enterprise Guide.
Enterprise Guide version 4.1 will be used.
INTRODUCTION
This presentation is designed as a Hands-On Workshop, where the participants follow along and step through the
usage of SAS Enterprise Guide. This Proceedings paper follows a similar format.
I KNOW HOW TO PROGRAM IN SAS – HOW DO I NAVIGATE SAS ENTERPRISE GUIDE?
With all the windows and views and menus available in Enterprise Guide, it is hard to know where to start! For many
“long –time” SAS programmers, the initial view can send them running right back to their programming environment.
But, trust us, the benefits of Enterprise Guide are worth the time it takes to get used to all the windows.
SAS Folders
Project Explorer
Task Status
Project View
Command Menu
Server List
Task List
Active Data menu
Project Designer
GETTING STARTED
The first time you open Enterprise Guide, you will see the Welcome to Enterprise Guide Screen. This screen gives
you the option of launching the Enterprise Guide tutorial or starting a new project. If you do not want this to be your
default screen when you open Enterprise Guide, you can check the box labeled ‘Do not show this screen again, ‘ after
which you will be taken to the default view with the MAIN MENU displayed at the top of your screen.
The main menu allows you to access the various tasks and views that are available to you. Although you may also
access the tasks and views through shortcut buttons, the main menu organizes them into logical categories, making
them easy to find.
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As SAS Programmers, you all know that the tasks you are expected to perform are seldom simple. More often than
not, there are a series of SAS programs that you run in a sequence, with different types of output directed to different
locations, along with all the intermediate and final SAS datasets that are generated and need to be saved.
Enterprise Guide provides a mechanism to organize your work by allowing you to group sequences of tasks, data
items and results into Projects. All of the code and tasks that you run within an Enterprise Guide session are part of
your active Project and are each displayed as separate nodes.
These nodes can then be linked and
organized in a logical sequence to
form a Process Flow. You can save
your Process Flow as a part of a
Project; then anytime the project is
opened the same sequence of tasks
can be easily executed. This helps
you and your organization distribute
and share information easily. The
Project Designer view is used to
display all of the task, data and code
nodes that make up your Process
Flow.
There are a number of ways that you can access your Project Designer view. From the main menu, select View Î
Project Designer. You can also select F4 or click the
shortcut button. Notice that the
Project Designer view also displays the connections between your work components. Again, this allows you to see
and visually inspect the organization of tasks, code and data associated with a Project.
You may prefer the Project Explorer
view, which provides a more
traditional “Windows Explorer”
Hierarchical view of your projects.
Select View Î Project Explorer
from the main menu to open the
Project Explorer view. Note that the
Project Explorer view does not
display the flow (connection) within
your projects.
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BUT, I AM A PROGRAMMER – HOW DO I RUN MY FAVORITE PROGRAM IN ENTERPRISE GUIDE?
Enterprise Guide enables you to easily run existing SAS programs, using similar steps to what you would follow using
the SAS Display Manager windows. Let’s run a simple program and review the log and results using Enterprise
Guide. Throughout this workshop, we will be using the Shoes dataset from the SASHELP library.
To run an existing program using Enterprise Guide (See Appendix – Program_1 for example program),
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from the Main Menu, select File Î Open Î Code Î Local Computer
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type the location and name of your program into the File Name box, and then click Open
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for this example, open Program_1
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the actual code will open in a new window tab
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notice that a code node, Program_1 is added to your Process Flow workspace
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run the program by selecting Run On SASMain from the POP MENU in the code node, OR by clicking
In this instance, we are running our SAS program on a server instance of SAS (SASMain). The first time that you
submit SAS code to run on the server, you’ll be prompted to enter your credentials (your user name and your
password). If you have SAS on your local machine and you are not connecting to a server, your Run option will be
Run on Local.
You can change your connection settings to switch from a local SAS instance to a server instance or to switch from
one server to another in the Administration panel of your Options screen (Tools Î Options Î Administration).
The remainder of the examples in this paper assume that we are running on a Server named SASMain.
VIEWING LOGS AND RESULTS
To review the log messages, double click the Log icon in your Project Explorer view. The SAS log will open up in a
new window tab.
Helpful Hint: If you would like your SAS Log to open automatically when you have an error, check the
Display SAS Log when Errors Occur option in your Results settings.
Since our example program produces an Excel Spreadsheet report as output, you would use your normal process for
opening and reviewing the results (such as Windows Explorer). If the results were standard SAS output you would
double click on the generated results node in either your Project Designer view or your Project Explorer view and the
results will open in a new tab window within Enterprise Guide. Leveraging the functionality of ODS, you can prompt
Enterprise Guide to produce different types of output. You can easily produce PDF results along with your standard
SAS output by simply changing your Results Options settings. Each type of generated result will display as its own
result node in your Project Designer or Project Explorer view.
Helpful Hint: To change the type of Results generated by a specific code node or task, right click on
the node and select properties. Under the Results, click the checkbox beside the type of output you
want to generate.
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CUSTOMIZING THE WINDOWING ENVIRONMENT
Everyone has different preferences about how Enterprise Guide windows should work, and Enterprise Guide provides
the flexibility for you to create a work space that works best for you. For example, Enterprise Guide windows can be
•
docked and undocked
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resized to make best use of the real estate
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hidden so that you only display what you need and use
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opened as new horizontal or vertical tabs
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easily reopened using the main menu or shortcut buttons.
Helpful Hint: Unhappy with your window changes? Click the Reset your Docking Windows button in
your Options window.
THAT WAS PAINLESS, BUT I NEED TO BE ABLE TO CHANGE CODE?
Suppose that you need to enhance existing code, rather than just run it. Navigate to the Program_1 code node and
double click to open it in a new window tab if it isn’t already open; or activate the tab if the code is already open.
Once the code is open, you can make changes; you will find the editor commands are identical to the SAS Editor.
Then simply rerun the code and review your results. You can save your changes from the main menu by selecting
File Î Save. Remember, each time you save a code node, you are actually saving a .sas program file.
If you have selected ‘Open the LOG when errors occur’ in your Options, then your log will now automatically appear if
there are issues.
Helpful Hint: If you would like to run just a section of the code, highlight and submit just like
you do in the SAS Display Manager Editors.
SPLITTING YOUR PROGRAM INTO LOGICAL STEPS
During program development and testing, do you often work with just one set of steps at a time, confirming results
before you move on? If you do, that same logic can easily be applied to your code in Enterprise Guide by defining
your program as a series of code nodes. Code nodes can be linked together in the Process flow window, thus
providing a clear picture of the steps and intermediate results.
To create a second code node that links to the first code node,
– open an existing program by selecting File Î Open Î Code Î Local Computer, from the main menu
– supply the location and name of your program in the File Name box, and then click Open. For this
example, use Program_2 (see the appendix for code stored in Program_2).
– notice that a Program_2 code node is added to your Process Flow workspace.
– link the new code node to the Program_1 code node
right click on the Program_1 code
node in your Project Designer
window
select Link Program_1 to . . .
select Program_2 and click OK.
You now see the link between the
two nodes and have the option of
running either a single code node or
running the branch that starts with
Program_1.
To run both code nodes, right click on
your Program_1 code node and select
Run Branch from Program_1. Once
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the code in Program_1 has run, Enterprise Guide will automatically run Program_2, generating and displaying all
intermediate results along the way.
Helpful Hint: To remove a link between tasks or Code nodes, right click anywhere on the joining arrow
and select Delete. This will only delete the linkage, not the code nodes.
You’ll notice that a separate log node is generated for each code node. By turning on Project Logging, you can
easily tell Enterprise Guide that you’d like a single SAS log to be generated for all of the tasks and code nodes in your
Project. This single Project Log will be created in addition to the individual logs created for each task or code node.
Helpful Hint: If Project Logging is turned on, the log represents a running log of the entire project. To
turn on the Project Logging, right click on the Project node in the Project Explorer View and select
Properties. Under the Project Log tab, click the checkbox labeled Maintain Project Log.
WOW – THAT’S EASY – ARE GRAPHICS EASY TOO?
You have now submitted and modified existing code in Enterprise Guide, so let’s work on a task from scratch. A
picture is worth a thousand words, so it is time to see how Enterprise Guide does with graphics. Using the same
sales data used in the first example program (Program_1), you will produce a vertical bar chart of Sales by Region.
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–
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–
–
–
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Select Graph Î Bar Chart from the main menu. This opens the Bar Chart Wizard.
In the Bar Chart screen, select Simple Vertical Bar
In the Task Roles screen
o Drag Region to Column to Chart
o Drag Sales to Sum of.
In the Appearance Î Options Screen, change the Shape to Cylinder from drop down list
In the Titles screen
o Click on Graph
o Uncheck Use Default Text. Enter your own title for your graph.
To see what code was generated, click on Preview Code.
Close the Code Preview Window
Click on Run to create the Bar Chart
The bar chart opens automatically in a new Tab in your Enterprise Guide session.
LEVERAGING CODE THAT ENTERPRISE GUIDE BUILDS
Behind the scenes, Enterprise Guide created “correct” code! Like most SAS programmers, you would probably like to
re-use the code elsewhere.
To access and then save the generated code,
– In the Project Window, double click on the Bar Chart task node
– Highlight the GOPTIONS statements and the PROC GCHART statements
– Right click anywhere on the highlighted code, and select Copy
– Close the Code Preview Window
– Close the Bar Chart Task Window.
To insert the copied code into your program, double click on the appropriate code node and paste the code in the
desired location. To save the expanded code node, select File Î Save Code As Î Local Computer, and provide
the name Program_3.
The expanded code can now be run in the usual fashion. Note that you could also have created a separate code
node from this copied code, as discussed earlier. You can make any additional updates and customizations to code
that you’ve just pasted, such as changing the appearance of the Legend or adding a Where clause to subset the data
being graphed.
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Helpful Hint: The Task Status Window shows you the status of the code or task you are running. If you
are running large SAS programs, the Task Status will tell you which task or Procedure is currently running.
You can open your Task status view from your Main menu. Select View Î Task Status.
Each of the built-in tasks will generate SAS code as you step through the Task Panes. This serves as a great way to
learn how to code new SAS Procedures since the syntax is available to view and edit.
At this point, save the Project so it is available for another day.
•
Select File Î Save Project As Î Local Computer
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Navigate to the file directory where you would like to save your project.
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Enter a name for your Project, and Click ok.
The next time you open your saved project; you will see the code nodes and links that you defined in this session.
Note that any temporary work datasets that you may have created in your session will not be saved with your project.
You can easily recreate the work datasets by re-running the project the next time you open it.
CUSTOMIZING THE GRAPH FORMAT
By default, graphs are generated as interactive ActiveX graphs, which are cool but can use up a lot of system
resources. You may prefer or require a more static format such as HTML or JPEG. You can easily change the
default in the Graph Results settings of Options.
Select Tools Î Options Î Results Î Graphs and select a different format from the drop down list.
Helpful Hint: When working with several tasks and code nodes in a single project, you can export all of
the generated SAS code as a single .sas file by selecting File Î Export Î Export All Code.. Enterprise
Guide will scan through your project to find all executable code and save it to a single .sas file. You can
select export all the code or select only parts of your project.
HOW CAN I ADD SOME FLEXIBILITY TO MY PROJECTS?
Project Parameters are user prompts that are passed as macro variables to your SAS code. By adding parameters to
your project, you give the user some flexibility in customizing the results. The user can enter values or select from a
list of values that you provide. In our example, we would like the user to be able to create this same report for one or
more regions existing in our data.
•
•
Select Tools → Parameters (Macro Variable) Manager
Click Add to add a new parameter.
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To provide descriptive text for
the user-prompt, enter “Please
select a Region” under the
General tab in the Display Name
section.
•
To specify the macro variable
that will receive selected values,
enter “RegionID” in the SAS
Code name section.
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Select the Data Type and
Values tab.
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In the Data Type Value
dropdown, select A List of
Values
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Select Load
Values
Specify location
of data as SAS
Server
Maintain the current
settings of Single Value
Only as selected and
Enclose Values within
Quotes unselected.
•
•
Navigate to the SHOES dataset: SASMAIN → Libraries → SASHELP → SHOES
In the ‘Select Column’ window, Select Region, Click OK
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To designate the default value that will
display, Check “Default Value”, double
click on “Canada”
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Click Add and Close
Click Close.
Now that parameters have been defined, we need to modify the code to accept parameters. From the Project
Designer window:
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Right click on the Program_1 Code Node and select Properties
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From the Properties window, select Parameters
and Click Add.
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Select ‘RegionID’ and click ‘OK’
Click ‘OK’ again to close the Code node Properties window
Now, modify the program so that the parameters control the data selected.
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Double Click your Program_1 code node
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Uncomment “where Region = “®ionID” from your Ex_Shoes_Data datastep.
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Save the changes to your Program_1 code node.
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Right click on the Program_1 code node, Select Run Branch From Program_1.
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When prompted to select a Region, select ‘Asia’ from the drop down list. Click Run.
Instead of forcing just a single selection, what if you wanted to provide a LIST of values that the user can select from?
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Select Tools and then Parameters (Macro Variable) Manager
Select the RegionID parameter and click EDIT
On the Data Type and Values tab, click the radio button beside Allow multiple Values and also select
Enclose Values within Quotes
Click Save and Close.
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Hands-on Workshops
You’ll receive the following warning message reminding you that you’re about to modify a
parameter that is being used by the Program_1 code node in your project.
Click Yes and Close
Double Click on the Program_1 node to open the code
Change ‘where region = “®ionID” to “where Region IN ( ®ionID );
Save the changes to your Program_1 code node.
Right click on the Program_1 code node, Select Run Branch From Program_1.
Holding down the CTRL key, select Africa, Canada and Eastern Europe. Click Run.
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I’M NOT WORKING WITH PROJECTS – I JUST NEED TO RUN THESE JOBS
Thinking about our SAS jobs within the context of projects is a new concept for a lot of us. We are used to working
with individual SAS jobs that are run separately and are not always related or dependent on each other. What if we
have 3 SAS jobs that we’d like to run, one after the other? Or perhaps we have some processes that we’d like to
submit at the end of the day so we can have the results ready the next morning. In this case, we don’t really want to
build a project; we want to be able to submit a ‘list’ of SAS jobs or tasks that we want Enterprise Guide to run. This is
where we would ‘Create an Ordered List’. The Ordered List task in Enterprise Guide allows you to specify a list and
sequence of tasks and jobs that you want Enterprise Guide to run. Let’s use the code from the previous example to
create an Ordered List.
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First you need to make sure that the code or tasks that you
want to run have been added to your project window.
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Select Tools and then Create Ordered List
Click Add
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•
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Enterprise Guide will scan through
your project for all executable SAS
tasks and list them for you
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Select the tasks that you would like
to add to your Ordered List. You can
select more than one by holding the
SHIFT or CNTL keys. Click OK.
The tasks have now been added to the Ordered List (above)
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We can change the order that these
tasks are executed using the Up and
Down buttons.
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We now have the option of running this
ordered list or Saving it to run later
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Click Run to submit these tasks.
You’ll notice that your Task Status window shows
you the task that is currently running as well as
the tasks that are queued to run next.
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OK – ENTERPRISE GUIDE REALLY WILL HANDLE MY NEEDS BUT HOW CAN I OFFLOAD SOME
OF MY WORK (OR DO MORE WORK IN LESS TIME)?
For most SAS programmers, it is a rare occurrence to write a program that is never used again. More typically, you
write programs that either run in production, or that are rerun with different input (parameters) on a regular basis.
Furthermore, YOU are not always the person that runs the job after it is written. Someone else may be responsible
for providing input parameters (changes) and running your code when results are needed. With this in mind, we
explore how you can easily set up your code so that others can access and get the results they need. You will do
this by creating a Stored Process.
A Stored Process is a SAS program that is typically located on a central server (ie: available to multiple users across
multiple clients) so that users can run the SAS Code but can’t change the SAS code. Designed properly, the Stored
Process enables user input to maximize the applicability of the code. For example, you
•
can embed business rules and logic so that everyone is creating consistent results
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have change control around any coding updates
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can make your code available to more people
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can provide the users with input parameter choices to take care of minor tweaks in the requirements.
CREATING A STORED PROCESS
Earlier we said that a Stored Process is a SAS Program. That is only half the story; the Stored Process also consists
of Metadata that describes the mechanics. So, before we get started, you must have a Metadata Server configured
and running in your work environment. Assuming that is complete, create a simple stored process in your project:
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First, lets remove the Project Parameter associated with our Program_1 code. Right click on your Program_1
code node
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Select Properties → Parameters.
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Highlight Region ID and click Remove. Click Ok.
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Back to the Project Designer, double click on your Program_1 code node and comment out “where Region IN
(®ionID);” → *where Region IN (®ionID); Save the changes to Program_1.
Let’s start by creating a Metadata location for our Stored Process:
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Open the SAS folders View by selecting View → SAS Folders
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Right Click on BIP Tree and Select New Folder
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Right Click on the new folder, and select Rename
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Name the new folder, WSEG1
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Back to the Project Designer, right click on your Program_1 code
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Select Create Stored Process, which will launch the Create New SAS Stored Process Wizard
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In the General Information screen, enter
a name for your Stored Process and click
Next
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The second screen will show you the
SAS Code that will be used in your
Stored Process (in this example,
Program_1 code). No changes are
required so click Next
•
in the third screen, you need to specify the Metadata Location where the metadata for your Stored Process will
be saved, then click Next. Your administrator can help you determine the location for your Stored Processes. In
this example, store the Stored Process metadata in the Samples directory. Click on the Choose Location and
navigate to //Foundation/BIP Tree/WSEG1. Click OK → Click Next.
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Screen 4 defines the execution environment. Here you can modify the source file (where your SAS code will
be saved), the Execution server (Workspace server or Stored Process server). Select Modify. For your
Execution Server, select SASMAIN – Logical Workspace Server from the drop down list.
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Click ADD and select OK. Click OK again and Save. Lastly, click Next.
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Screen 5 enables input of Parameters. We will not be using Parameters in our example, click Next
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Note: An additional screen would be included if librefs needed to be defined.
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Screen 6 defines the available Output Options. Select Transient Package of Files, and click Next
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Finally, screen 7 is a Summary of your selections for this stored process. Click Finish.
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The stored process is now available in the Project Designer View.
To run the Stored Process, right click on the node and select Run Stored Process Name. To view the resulting log,
right click on the node and select Open Log. You may have noticed that we skipped over the parameters screen in
this workshop. Parameters are a useful way of providing the user with some flexibility when running a Stored
Process. Parameter values that the user enters are passed as macro variables to the SAS code and can be used as
such throughout your coding logic. For more information on Parameters, refer to the recommended reading at the
end of this paper.
Helpful Hint: To get easy access to your Stored Processes, use the SAS Folders View. Select View Î
SAS Folders from the main menu.
WHAT’S NEXT
Now that you know the basics of using Enterprise Guide, there are lots of bells and whistles and additional features to
explore. First, check out the use of parameters with Stored Processes. Then, begin looking at the other many
features that Enterprise Guide and the SAS BI Suite offer.
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CONCLUSION
Enterprise Guide 4.1 provides a powerful environment and toolset for end-to-end information delivery. As a SAS
programmer, you can easily begin taking advantage of Enterprise Guide to provide a flexible reporting and analytics
environment to meet your organization’s business needs.
RECOMMENDED READING
To gain a more complete understanding of Enterprise Guide 4.1, the authors recommend the following
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Getting Started with SAS Enterprise Guide – free learning tutorial available from
http://www.sas.com/apps/elearning/elearning_details.jsp?pubcode=59271
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Little SAS Book for Enterprise Guide 4.1 – By Susan J. Slaughter, Lora D. Delwiche
ACKNOWLEDGMENTS
The authors appreciate the feedback and suggestions provided by Peter Eberhardt.
CONTACT INFORMATION
Your comments and questions are valued and encouraged. Contact the authors at:
Marje Fecht
Prowerk Consulting
marje.fecht@prowerk.com
www.prowerk.com
Rupinder Dhillon
Dhillon Consulting
Rupinder@dhillonconsulting.com
www.dhillonconsulting.com
SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS
Institute Inc. in the USA and other countries. ® indicates USA registration.
Other brand and product names are trademarks of their respective companies.
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APPENDIX – PROGRAMS
PROGRAM_1
/*******************************************************************/
/* HOW - A SAS Programmer's Guide to SAS Enterprise Guide
*/
/* Example Program 1 - Output Excel Spreadsheet w/ Shoes data
*/
/*******************************************************************/
data Ex_Shoes_Data;
set sashelp.shoes;
*where Region = "®ionID";
AverageSalesPerStore = sales / stores;
label AverageSalesPerStore = 'Average Sales Per Store';
format AverageSalesPerStore dollar12.2;
run;
ods listing close;
ods tagsets.ExcelXP path = 'c:\HOW\fecht'
file='HOW_1_Basic_Report.xls' style=statdoc
options (sheet_name
= 'Example 1'
frozen_headers = 'Yes'
autofilter
= 'All' );
title "Simple SAS Code Example 1";
proc print data=Ex_Shoes_Data noobs label ;
run;
ods tagsets.ExcelXP close;
ods listing;
PROGRAM_2
/***********************************************************/
/* HOW - A SAS Programmer's Guide to SAS Enterprise Guide */
/* Example Program 2 - Demonstrate Code node links
*/
/***********************************************************/
ods listing close;
ods pdf file = 'c:\HOW\fecht\HOW_1_Shoes_Report.pdf';
proc report data = Ex_Shoes_Data nowd;
column ("Location" (Region Subsidiary Stores))
Product
("Sales"
(Sales AverageSalesPerStore))
;
define region / order "Region";
define Subsidiary / order "Subsidiary";
define Stores / display "Number of Stores";
define Product / display "Product";
define Sales / Sum "Sales";
define AverageSalesPerStore / Sum "Avg Sales per Store";
break after region / summarize;
rbreak after / summarize;
run;
ods pdf close;
ods listing;
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