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Rick WicklinMay 29, 2024 0

Sometimes labels for variables get "dropped" during data preparation and cleaning. One example is when data are transposed from "wide form" to "long form." For example, suppose a data set has three variables, X, Y, and Z, each with labels. If you transpose the data to long form, the new

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Analytics | Learn SAS

Rick WicklinMay 20, 2024 0

On the correctness of a discrete simulation

After writing a program that simulates data, it is important to check that the statistical properties of the simulated (synthetic) data match the properties of the model. As a first step, you can generate a large random sample from the model distribution and compare the sample statistics to the expected

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Learn SAS | Programming Tips

Rick WicklinMay 15, 2024 0

Rank, order, and sorting

A SAS programmer was trying to implement an algorithm in PROC IML in SAS based on some R code he had seen on the internet. The R code used the rank() and order() functions. This led the programmer to ask, "What is the different between the rank and the order?

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