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I am creating a scatter plot using ggplot/geom_point. Here is my code for building the function in ggplot.

AddPoints <- function(x) {
    list(geom_point(data = dat , mapping =  aes(x = x, y = y) , shape = 1 , size = 1.5 ,
color = "blue"))
}

I am wondering if it would be possible to replace the standard points on the plot with numbers. That is, instead of seeing a dot on the plot, you would see a number on the plot to represent each observation. I would like that number to correspond to a column for that given observation (column name 'RP'). Thanks in advance.

Sample data.

 Data <- data.frame(
    X = sample(1:10),
     Y = sample(3:12),
    RP = sample(c(4,8,9,12,3,1,1,2,7,7)))
887
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  • It's easier to help you if you include a simple [reproducible example](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example) with sample input and desired output that can be used to test and verify possible solutions. – MrFlick Nov 12 '20 at 19:17
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    `geom_text` seems useful here. – r2evans Nov 12 '20 at 19:17
  • @MrFlick please see updated sample data – 887 Nov 12 '20 at 19:27
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    BTW, the function argument is just `x`, but the contents references `dat` and `y` as well. Also, your additional sample data uses upper-case `X` and `Y`, so it isn't clear what is what here. Regardless, I think `geom_text(aes(x=Y, y=Y, label=RP), data=x)` might suffice. – r2evans Nov 12 '20 at 19:28

1 Answers1

4

Use geom_text() and map the rp variable to the label argument.

ggplot(Data, aes(x = X, y = Y, label = RP)) +
  geom_text()
Johan Rosa
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