geom_smooth doesn't appear in scatterplot - r

Question

I'm trying to plot a geom_smooth line in a ggplot2 scatterplot but it doesn't appear when I add the function.
Here's a pasrt of my data frame df.
df <- structure(list(Kennisnamedatum = structure(c(17168, 17169, 17170,
17171, 17172, 17173, 17174, 17175, 17176, 17177), class = "Date"),
misdrijven_per_dag = c(334L, 321L, 292L, 263L, 284L, 247L,
233L, 214L, 252L, 281L)), .Names = c("Kennisnamedatum", "misdrijven_per_dag"
), row.names = c(NA, -10L), class = c("grouped_df", "tbl_df",
"tbl", "data.frame"), vars = "Kennisnamedatum", drop = TRUE, indices = list(
0L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L), group_sizes = c(1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), biggest_group_size = 1L, labels = structure(list(
Kennisnamedatum = structure(c(17168, 17169, 17170, 17171,
17172, 17173, 17174, 17175, 17176, 17177), class = "Date")), row.names = c(NA,
-10L), class = "data.frame", vars = "Kennisnamedatum", drop = TRUE, .Names = "Kennisnamedatum"))
I hope someone can tell me what I'm doing wrong by reading my plot code.
library(ggplot2)
library(ggiraph)
ggplot(df, aes(x = Kennisnamedatum, y = misdrijven_per_dag)) +
geom_point_interactive(aes(tooltip = Kennisnamedatum,
data_id = Kennisnamedatum),
alpha = 0.6,
colour = "#607D8B" ) +
geom_smooth() +
scale_x_date(date_breaks = "1 month",
date_labels = "%b")
I get this warning message: geom_smooth() using method = 'loess' and formula 'y ~ x'

Answer 1

I don't know ggiraph, so I did not test with geom_point_interactive. As mentionned by #Jimbou, if I use geom_point, I have no problem getting the graph, but with no interactivity.
I can give you an option with plotly::ggplotly to add the interactivity, using your data:
library(ggplot2)
library(plotly)
plot <- ggplot(df, aes(x = Kennisnamedatum, y = misdrijven_per_dag)) +
geom_smooth() +
geom_point(aes(text = Kennisnamedatum),
alpha = 0.6,
colour = "#607D8B") +
scale_x_date(date_breaks = "1 day",
date_labels = "%b %d")
ggplotly(plot, tooltip = "text")
Note that I have changed the scale for x so it would display something with the data you provided.