ggthemes scale_colour_solarized("blue") 在应用于绘图时给出“[[: subscript out of bounds”中的错误

Question

plot <-
    ggplot(tot_costs,
           aes(period, total_cost, colour = team, group = team)) +
    geom_point() +
    geom_line() +
    ylab("") +
    xlab("Year") +
    # Commented working code theme_minimal() +
    theme_solarized(light = FALSE, base_size = 16) + scale_colour_solarized("blue") +
    theme(axis.text.x = element_text(angle = 45),
          legend.title = element_blank())

When I replace the theme_solarized by theme_minimal, everything is working, but when I try to apply theme_solarized/scale_colour to the plot, I get a "Subscript out of bounds error". I wonder if it's related to the color palette, maybe there are too many "teams" for the colors available. However, it's the solarized theme is working fine with other plots with the same teams

Answer 1

In the documentation for scale_color_solarized() it says to:

See solarized_pal() for details.

Looking into ?ggthemes::solarized_pal , it says:

This palette supports up to seven values.

I guess in this case your easiest choice is to use a different color scale.

By the way, distinguishing more than around seven colours can prove difficult if they are close togheter in a plot, so think about giving an additional aesthetic to your team variable (eg shape).