Learn SAS
4

## Flip it. Flip it good.

A SAS user needed to convert a program from MATLAB into the SAS/IML matrix language…
Programming Tips
1

## Difference operators as matrices

For a time series { y1, y2, ..., yN }, the difference operator computes the…
2

## Rotation matrices and 3-D data

Rotation matrices are used in computer graphics and in statistical analyses. A rotation matrix is…
10

## Counting observations for which two events occur

Every year near Halloween I write an article in which I demonstrate a simple programming…
2

## Visualize a weighted regression

What is weighted regression? How does it differ from ordinary (unweighted) regression? This article describes…
5

## Absorbing Markov chains in SAS

Last week I showed how to represent a Markov transition matrix in the SAS/IML matrix…
4

## Markov transition matrices in SAS/IML

Many computations in elementary probability assume that the probability of an event is independent of…
Learn SAS
0

## Grids and linear subspaces

A grid is a set of evenly spaced points. You can use SAS to create…
2

## Compute the square root matrix

Children in primary school learn that every positive number has a real square root. The…
0

## Matrix computations at SAS Global Forum 2016

Last week I attended SAS Global Forum 2016 in Las Vegas. I and more than…
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