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  • SAS Iris dataset Plot
    SAS Day 34: Background Story: Once, in my machine learning class, the professor asked what software do we use for data science? One student answered: "SAS". Then the professor laughed and said: "Oh dear, you must be in the wrong class, nobody uses SAS in data science industry". SAS stands for Statistical Analytic Software, it is most widely used in health-related fields. Although it is known
  • SAS Merge
    SAS Day 22: Merge  Background: Sometimes we need to obtain information from different datasets, how do we combine two or more datasets in SAS?  Most cases, we use the "Merge" statements, however,  depends on the data structures, we need to use SQL if it is many to many mapping. P.S. regardless of Merge or SQL, we need to have at least a specific common variable.  Problem: We want to c
  • SAS Proc SQL Join
    SAS day 24: Proc SQL Join Review: Last time we went to over SAS Merge, it is a SAS Merge statement used for 1 - 1 mapping or One - Many mapping, What should we do for many to many mapping? Problem: Suppose we want to generate a dataset which has the combined info from both dataset A and B. Note: Data A and B both have more than 1 record for each patient. Sample Dummy Dataset: Data
  • SAS Space
    SAS Day 24: Space Trick Background: My boss has a motto "Devil in the details". I think all the Space- Related issues are the "Devil" in SAS. Today, we will go over the function and tricks I used to deal with Space. Remove Space: Compress, Compbl, Strip, Trim Concatenate with Remove Space: ||, CAT, CATS, CATX, CATT [caption id="attachment_1626" align="alignnone" width="550"] analogicus / Pixaba

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