Selecting a range of values in a specific column for R ggplot

October 13, 2022

I am trying to select a range of values (i.e. the first 4 values) in a specific column from a table. The column is called "RL45". I tried the following code to create a plot in ggplot:

newplot <- ggplot(data = GEV, aes(x = RL45[1:4])) + geom_density(color = 
"midnightblue") + xlab("Location (mm/day") + ggtitle("Global Location under RCP4.5") + 
xlim(300, 350)

This results in this strange error:

Error: Aesthetics must be either length 1 or the same as the data (34): x

This is odd, as I selected the first 4 values in that "RL45" column.

Any thoughts would be greatly appreciated!

Thank you,

>Solution :

It looks like you just need to change where you subset.

newplot <- ggplot(data = GEV[1:4], aes(x = RL45)) + geom_density(color = 
    "midnightblue") + xlab("Location (mm/day") + ggtitle("Global Location under RCP4.5") + 
    xlim(300, 350)