How do you specify a range of variables in SAS?
Use a single hyphen (-) to specify a range of variables that have a common prefix and a sequential set of numerical suffixes. Use the colon operator (:) to specify a list of variables that begin with a common prefix. Use a double-hyphen (–) to specify a consecutive set of variables, regardless of type.
How do you set a range in SAS?
For ranges with character strings, be sure to enclose each string in single quotation marks. For example, if you want a range that includes character strings from A to Z, then specify the range as ‘A’-‘Z’ , with single quotation marks around the A and around the Z .
How many ways can you create macro variables in SAS?
Knowing how to create and use macro variables is the first step in learning the SAS Macro Language. One of the primary techniques is through the %LET statement. Other ways of creating macro variables includes the use of the iterative %DO loop, macro parameters, the SQL INTO: clause, and the DATA step SYMPUT routine.
How do I assign a value to a macro variable in SAS?
The simplest way to assign a value to a macro variable is to use the macro program statement %LET: %let dsname=Newdata; DSNAME is the name of the macro variable. Newdata is the value of the macro variable DSNAME.
How do you find the range of a variable in SAS?
range function can be used as follows. R= range(x,y,x); For within an column you need use proc means. proc means data=sashelp.
How do you resolve a macro variable in SAS?
You can use these references anywhere in a SAS program. To resolve a macro variable reference that occurs within a literal string, enclose the string in double quotation marks. Macro variable references that are enclosed in single quotation marks are not resolved.
What is SAS macro variable?
Macro variables are tools that enable you to dynamically modify the text in a SAS program through symbolic substitution. The value of a macro variable remains constant until it is specifically changed. Macro variables are independent of SAS data set variables.
What is Proc mean?
Proc is a computer gaming term that rhymes with “dock.” Proc is used as both a noun and a verb to describe whenever a random gaming item activates, or a random gaming event occurs.
What happens if Threads is specified in Proc means statement?
Note: If THREADS is specified (either as a SAS system option or on the PROC MEANS statement) and another program has the input data set open for reading, writing, or updating, then PROC MEANS might fail to open the input data set. In this case, PROC MEANS stops processing and writes a message to the SAS log.
What are special missing values in Proc means?
Special missing values that represent numeric values (the letters A through Z and the underscore (_) character) are each considered as a separate value. If you omit MISSING, then PROC MEANS excludes the observations with a missing class variable value from the analysis.
Where is the weighted mean in Proc means statement?
PROC MEANS Statement. The procedure computes the variance as , where is the corrected sums of squares and equals . When you weight the analysis variables, equals , where is the weighted mean.
How is Proc means used to improve performance?
See PRINT | NOPRINT. See THREADS | NOTHREADS. disables floating point exception (FPE) recovery during data processing. By default, PROC MEANS traps these errors and sets the statistic to missing. In operating environments where the overhead of FPE recovery is significant, NOTRAP can improve performance.