There are a number of procedures that you can use to find the top 1% and bottom 1% of data values, including PROC RANK, PROC SQL, and PROC UNIVARIATE. The example code below uses PROC SUMMARY and DATA step logic to create macro variables that contain the 1st and 99th percentile values. These macro variables can be used for further processing to subset the original data set.
/* Create sample data */ data test; do i=1 to 10000; x=ranuni(i)*12345; output; end; drop i; run; proc sort data=test; by x; run; /* Output the 1st and 99th percentile values */ proc summary data=test; var x; output out=test1 p1= p99= / autoname; run; /* Create macro variables for the 1st and 99th percentile values */ data _null_; set test1; call symputx('p1', x_p1); call symputx('p99',x_p99); run; %put &p1; %put &p99; data test2; set test; /* Use a WHERE statement to subset the data */ where &p1 le x le &p99; run; proc print; run;
If you would like to choose different percentages in place of P1 and P99 above, you can choose any of the percentile statistics that are available in the OUTPUT statement of the MEANS or SUMMARY procedure.
These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.
These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.
Type: | Sample |
Date Modified: | 2016-09-12 16:01:31 |
Date Created: | 2016-09-09 13:15:41 |
Product Family | Product | Host | SAS Release | |
Starting | Ending | |||
SAS System | Base SAS | z/OS | ||
z/OS 64-bit | ||||
OpenVMS VAX | ||||
Macintosh | ||||
Microsoft® Windows® for 64-Bit Itanium-based Systems | ||||
Microsoft Windows Server 2003 Datacenter 64-bit Edition | ||||
Microsoft Windows Server 2003 Enterprise 64-bit Edition | ||||
Microsoft Windows XP 64-bit Edition | ||||
Microsoft® Windows® for x64 | ||||
OS/2 | ||||
Microsoft Windows 8 Enterprise 32-bit | ||||
Microsoft Windows 8 Enterprise x64 | ||||
Microsoft Windows 8 Pro 32-bit | ||||
Microsoft Windows 8 Pro x64 | ||||
Microsoft Windows 8.1 Enterprise 32-bit | ||||
Microsoft Windows 8.1 Enterprise x64 | ||||
Microsoft Windows 8.1 Pro 32-bit | ||||
Microsoft Windows 8.1 Pro x64 | ||||
Microsoft Windows 10 | ||||
Microsoft Windows 95/98 | ||||
Microsoft Windows 2000 Advanced Server | ||||
Microsoft Windows 2000 Datacenter Server | ||||
Microsoft Windows 2000 Server | ||||
Microsoft Windows 2000 Professional | ||||
Microsoft Windows NT Workstation | ||||
Microsoft Windows Server 2003 Datacenter Edition | ||||
Microsoft Windows Server 2003 Enterprise Edition | ||||
Microsoft Windows Server 2003 Standard Edition | ||||
Microsoft Windows Server 2003 for x64 | ||||
Microsoft Windows Server 2008 | ||||
Microsoft Windows Server 2008 R2 | ||||
Microsoft Windows Server 2008 for x64 | ||||
Microsoft Windows Server 2012 Datacenter | ||||
Microsoft Windows Server 2012 R2 Datacenter | ||||
Microsoft Windows Server 2012 R2 Std | ||||
Microsoft Windows Server 2012 Std | ||||
Microsoft Windows XP Professional | ||||
Windows 7 Enterprise 32 bit | ||||
Windows 7 Enterprise x64 | ||||
Windows 7 Home Premium 32 bit | ||||
Windows 7 Home Premium x64 | ||||
Windows 7 Professional 32 bit | ||||
Windows 7 Professional x64 | ||||
Windows 7 Ultimate 32 bit | ||||
Windows 7 Ultimate x64 | ||||
Windows Millennium Edition (Me) | ||||
Windows Vista | ||||
Windows Vista for x64 | ||||
64-bit Enabled AIX | ||||
64-bit Enabled HP-UX | ||||
64-bit Enabled Solaris | ||||
ABI+ for Intel Architecture | ||||
AIX | ||||
HP-UX | ||||
HP-UX IPF | ||||
IRIX | ||||
Linux | ||||
Linux for x64 | ||||
Linux on Itanium | ||||
OpenVMS Alpha | ||||
OpenVMS on HP Integrity | ||||
Solaris | ||||
Solaris for x64 | ||||
Tru64 UNIX |