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![1. Data Visualization with ggplot2 - R for Data Science [Book]](https://www.oreilly.com/api/v2/epubs/9781491910382/files/assets/rfds_01in37.png "1. Data Visualization with ggplot2 - R for Data Science [Book]")
1. Data Visualization with ggplot2 - R for Data Science [Book]
Bar charts — geom_bar • ggplot2
R ggplot2: stat_count() must not be used with a y aesthetic error in Bar graph - Stack Overflow
Data plotting
r - Error: stat_count() can only have an x or y aesthetic - Stack Overflow
