CODEWITHSUNDEEP
rggplot2
Cox Tox
Cox Tox

Reputation: 691

Add two legend title ( one for line and another for ribbon)

I would like to add one title to my legend. The argument "fill" and "color" have the same variable : varC (14 factors). I try to do this with : 

g.mean <- ggplot(df,aes(x = as.numeric(xx),y=yy,color=varc)) + 
  geom_line() +
  geom_ribbon(aes(ymin=Born_Inf, ymax=Born_Sup, fill=varc), alpha=0.1) + 
  guides(color= guide_legend("My title for line"),fill=guide_legend("My title for ribbon"))

enter image description here

Upvotes: 0

Views: 96

Answers (1)

Relasta
Relasta

Reputation: 1106

Remove guides and try one of the following. The reason I give two possible answers is because I cannot be 100% sure exactly which will work without seeing a sample of your data. If varc is a factor or character the second one should work, if it is numeric the first one should work.

1.

ggplot(df,aes(x = as.numeric(xx),y=yy,color=varc)) + 
  geom_line() +
  geom_ribbon(aes(ymin=Born_Inf, ymax=Born_Sup, fill=varc), alpha=0.1) +   
  scale_color_continuous(name = "My title for line") + 
  scale_fill_continuous(name = "My title for ribbon")

2.

ggplot(df,aes(x = as.numeric(xx),y=yy,color=varc)) + 
  geom_line() +
  geom_ribbon(aes(ymin=Born_Inf, ymax=Born_Sup, fill=varc), alpha=0.1) +   
  scale_color_discrete(name = "My title for line") + 
  scale_fill_discrete(name = "My title for ribbon")

Upvotes: 2

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