ggplot - subset top 10 in a stack bar plot

To subset the top 10 categories in a stacked bar plot using ggplot in R, you can follow these steps:

  1. Load the necessary packages: Start by loading the required packages, including ggplot2 and any other packages that you may need for data manipulation.

  2. Prepare your data: Ensure that your data is in a format that can be easily plotted. It should have a column for the categories you want to plot and a column for the corresponding values.

  3. Sort your data: Sort your data in descending order based on the values you want to use for the stack bar plot. This will make it easier to select the top 10 categories.

  4. Subset the data: Use the head() function to select the top 10 rows from the sorted data. By default, head() will return the first 10 rows.

  5. Create the plot: Use the ggplot() function to create a new plot object. Specify the data frame as the subsetted data from step 4.

  6. Add layers: Use the geom_bar() function to add the bar plot layer to the plot object. Specify the category variable for the x-axis and the value variable for the y-axis.

  7. Customize the plot: Add any additional layers or aesthetics to customize the plot, such as colors or labels.

  8. Display the plot: Use the print() function to display the plot object. Alternatively, you can use the plot() function to open the plot in a separate window.

By following these steps, you should be able to subset the top 10 categories in a stack bar plot using ggplot in R.