1. A Brief Introduction to PROC TRANSPOSE prepared by Voytek Grus for
SAS user group, Halifax
November 26, 2009

2. What is data transposition?
Matrix notation: : XT
Excel: copy/paste/transpose command or pivot tables.
Example of a simple data transposition:

3. Examples of Complex data transpositions
Full Transp.
Interleaved
Dataset

4. Why do we transpose data?
For data presentation purposes.
To merge datasets with diverse structures
To re-design databases
efficiency gains in programming code and processing time.

5. Transposing data to streamline SAS calc. and programming code.
Cross-sectional data base design
Sequential data base design
Data Step
Array def.
Do loop
If condition
Then output;
Run;
Proc
Transpose
This db design is
more amenable to
sequential data processing
using SAS procs with BY statements
Proc means, proc regression,
proc univariate etc..
Data Step type of processing
Data test2;
Set test1;
Sum= var1+ var2+var3;run;

6. Syntax of Proc Transpose
PROC TRANSPOSE (DATA=input-data-set <LABEL=label> <LET> <NAME=name> )
OUT=output-data-set (drop = _label_ _name_) <PREFIX=prefix>;
BY <DESCENDING> variable-1 WHERE … (Conditions) … ;
VAR (options: list variables, _all_, blank);
ID variable;
IDLABEL variable;
COPY variable(s);
Beware of pitfalls of missing observations and/or duplicate entries in the id variable

7. SAS Help Tip Examples: TRANSPOSE Procedure
Example 1: Performing a Simple Transposition
Example 2: Naming Transposed Variables
Example 3: Labeling Transposed Variables
Example 4: Transposing BY Groups
Example 5: Naming Transposed Variables When the ID Variable Has Duplicate Values
Example 6: Transposing Data for Statistical Analysis

8. Use divers data bases in pricing studies
An example of proc transpose application in pricing and cost studies from the utility industry
Use divers data bases in pricing studies
Load Research (sample data of 15 min readings)
Power Production (hourly costs)
CIS (monthly records)

9. Real Life Example (slide 1)
proc transpose data=bd_ets out=bd_ets2; var kwhs kws;
id season daytime _name_;
by year class customer bf psmadj; run;

10. Real Life Example (slide 2)
proc transpose data=bd_ets out=bd_ets2;
var kwhs kws; by year class customer bf psmadj season daytime; run;
data bd_ets2; set bd_ets2; newname=left(right(_name_)||left(season)||left(daytime));run;

11. Real Life Example (slide 3)
proc sort data=bd_ets2 out=bd_ets3;
by class year customer bf psmadj newname;run;
proc transpose data=bd_ets3 out=bd_ets3(drop=_name_);
var col1;id newname; by class year customer bf psmadj;run;

12. Questions?