In this video we show how to use vector-valued specifications for the col= and pch= graphical parameters when calling plot() or some other high level graphical function in R in order to distinguish…
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…
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…