How to create geom_boxplot with large amount of continuous x-variables

Question

I have a data frame which contains x-axis numeric bins and continuous y-axis data across multiple categories. Initially, I created a boxplot by making the x-axis bins \"fact

Answer 1

Don't make x a factor. You need to aesthetically map a group that is a factor determining which box the value is associated with, luckily, after melting, this is what you variable column is:

ggplot(df.m, aes(x = x, y = value, group = variable)) +
    geom_boxplot()

As x is still numeric, you can give it whatever values you want within a specific variable level and the boxplot will show up at that spot. Or you could transform the x axis, etc.