How to fill colour in each individual density curve within a ridgeline plot

Asked Jun 25 '19 at 13:00

Active Jul 20 '20 at 04:31

Viewed 627 times

I want to specify the colour for each density in a ridgeline plot in R. I am using ggplot2 and ggridges.

I have tried the following here to produce a ridge plot, with no colours:

seq_plot_alt <- ggplot(seq_df, aes(x=x, y=as.factor(beta), fill = beta)) + 
  labs(title = 'Sequential', y = expression(beta), x = 'x', fill = expression(beta)) +
  geom_density_ridges(scale = 5) +
  theme_ridges(grid = FALSE, center_axis_labels = T) +
  scale_x_continuous(expand = c(0.01, 0)) +
  scale_y_discrete(expand = c(0.05, 0))

I have used the fill argument in the aes function to add some colour but I want to be able to specify the exact colours that each density plot is. So for each of these, I can specify say a vector of length 8 for each one.

edited Jul 20 '20 at 04:31

Z.Lin

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asked Jun 25 '19 at 13:00

user-2147482565

3

`beta` needs to be a factor. At the moment you have a continuous color scale. Try for instance `fill = factor(beta)`. – pasipasi Jun 25 '19 at 13:12
2

@pasipasi thank you! after doing this I was able to use scale_fill_manual() to specify them – user-2147482565 Jun 25 '19 at 13:16

How to fill colour in each individual density curve within a ridgeline plot

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