geom_bump links reappearing values

[Haclio]

Hi!

I just started using ggbump and I'm surprised by the behavior of the lines when previously shown missing values reappear, when axis limits are set.

I'm sure I'm not clear so here's an example :

test <- data.frame(Time = rep(seq(1:3), 4),
                   Type = rep(letters[1:4], each = 3),
                   rank = c(4, 2, 4, 2, 4, 3, 3, 3, 2, 1, 4, 1))

This small dataframe simulates rank data with 4 ranks, but imagine I want to show only 3. If I do that with geom_line:

ggplot(test, aes(x = Time, y = rank, color = Type)) +
    geom_line(linewidth = 4) +
    geom_point(size = 10) +
    ylim(1, 3)

Take the purple points. There are two values that are shown and one that is out of bounds, and they're not linked.

Now if I replace geom_line with geom_bump:

ggplot(test, aes(x = Time, y = rank, color = Type)) +
    geom_bump(linewidth = 4) +
    geom_point(size = 10) +
    ylim(1, 3)

geom_bump draws lines between unlinked points as it seems it ignores the existence of out of bounds values. I expected it to behave like geom_line in that regard.

I might have missed something, but is it the intended behavior?

[MayBeche]

I have the same issue. Did you found a solution?
I tried changing my out-of-bounds data with NA but it changes nothing...

edit : I finally found the solution !

When writing this part:
p <- Resultat %>%
ggplot(aes(order, rank, color = Risques, group = Risques)) +
geom_bump(smooth = 15, linewidth = 2, alpha = 0.2) +
scale_y_reverse()

p<- p+ geom_bump(data = Resultat%>% filter(rank <=10),
aes(order, rank, group = group, color = Risques),
smooth = 15, linewidth = 2, inherit.aes = F, na.rm = TRUE)+ scale_color_manual(values = color_graph )

In the geom_bump, group in aes must be set on the variable called "group" and not the variable I call Risques.
When the value for one categorie is out-of-bound and then back in the top X, the group variable will change. This way, in the geom_bump, they are considered to be 2 different groups and therefore will not be linked.