If you're using R programming for data visualization then you're going to love this video. Creating plots and graphs using ggplot2 couldn't be easier. Ggplot using a concept called geoms (or geometries) to determine the type of plot that will be made. Understanding how these work is essential if you're going to do effective data visualization. So if you're a data scientist or some doing research and want to create graphs and plots using R, then watch this video.