ggplot2 and plots in R Markdown documents

- [Instructor] It's a slight simplification, but in R … there are essentially two types of charts. … They're base R charts created with the graphics package, … and ggplot2 charts created with ggplot2 package … built by Hadley Wickham. … A typical example of the base R plot is the bar chart … that would be generated with the bar plot function. … Where as with ggplot2 charts, the chart always begins … with ggplot2, and we add geoms and other layers … to the chart with a plus symbol. … It's important to note that both types of chart … can be inserted into R Markdown documents … by constructing the relevant chart in a code chunk. … Similarly, the appearance of charts in R Markdown output … is controlled by the same code chunk options … for both ggplot2 and base R charts. … For instance, if we want to control the size of the chart, … we would use the same chunk option regardless … of whether we're creating a ggplot2 chart … or a chart from base R. … …