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Repeatedly Applying Functions to Data - Part 2 (lapply() and sapply())

While tapply() applies a function to different observations in a vector, which might correspond to rows in a data frame, lapply() and sapply() apply a function to each element of a list. In the case…

From  Daniel Hall 199 plays 0  

Data Structures in R - Part 4, Lists.mp4

We continue to discuss data structures in R, this time focusing on lists. Unlike vectors, matrices and arrays, the elements of a list may be of different modes. This makes them very flexible and…

From  Daniel Hall 90 plays 0  

PROC SGPLOT - Part 4 (Scatter Plots)

The scatter plot is a fundamental tool for visualizing the relationship between two quantitative variables. In this video we show how to use PROC SGPLOT to produce scatter plots and demonstrate how…

From  Daniel Hall 505 plays 0  

PROC SGPLOT - Part 3 (Boxplots)

In this video we review the anatomy of a boxplot and show how to use PROC SGPLOT to produce vertical or horizontal boxplots. We show how to produce side-by-side boxplots as well as clustered…

From  Daniel Hall 752 plays 0