English

Rick Wicklin 0
Mathematical art: Weaving matrices

An artist friend of mine recently created a beautiful abstract image and described the process on her blog. She says that "after painting my initial square, I cut it into strips and split them down the middle, then wove them together.... I had no idea when I started piecing these

Learn SAS
Jim Simon 0
Reading Hierarchical Data - Part 3

This post is the third and final in a series that illustrates three different solutions to "flattening" hierarchical data.  Don't forget to catch up with Part 1 and Part 2. Solution 2, from my previous post, created one observation per header record, with detail data in a wide format, like

Data Management
Jim Harris 0
Data quality to "DI" for

There is a time and a place for everything, but the time and place for data quality (DQ) in data integration (DI) efforts always seems like a thing everyone’s not quite sure about. I have previously blogged about the dangers of waiting until the middle of DI to consider, or become forced

Learn SAS
Jim Simon 0
Reading hierarchical data - Part 2

This post is the second in a series that illustrates three different solutions to "flattening" hierarchical data. Solution 1, from my previous post, created one observation per header record, summarizing the detail data with a COUNT variable, like this: Summary Approach: One observation per header record   Obs Family Count

Learn SAS
Jim Simon 0
Reading hierarchical data - Part 1

A family and its members represent a simple hierarchy.  For example, the Jones family has four members: A text file might represent this hierarchy with family records followed by family members' records, like this:   The PROC FORMAT step below defines the codes in Column 1: proc format; value $type

Learn SAS
Anuja Nagpal 0
Flexibility of SAS Enterprise Miner

Do you use an array of tools to perform predictive analytics on your data? Is your current tool not flexible enough to accommodate some of your requirements? SAS Enterprise Miner may be your solution. With growing number of data mining applications, having a tool which can do variety of analysis

Susan Slaughter 0
Exercises for Learning SAS Programming

Our new book, Exercises and Projects for The Little SAS® Book Fifth Edition, includes a variety of exercises to help people learn SAS programming. Rebecca Ottesen, Lora Delwiche and I designed this book so that it can be used either in a classroom setting or by individual readers working alone.

Programming Tips
Jerry Leonard 0
Creating Quantile Groups

SAS users often ask me about the best way to group or bin their data in preparation for additional analysis. Depending on the need, there are several ways to achieve this using SAS procedures or other SAS processing. Creating user-defined formats with PROC FORMAT or using Data step processing are

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