Myujth

I am new R user. I tried to add legend of mean data of df_summary1 and df_summary2 with title "RCP4.5" and "RCP8.5" in my ggplot but fail. Can any one help me on this. Thanks in advance.

ggplot()+
geom_line(data=df_tidy1, aes(x=date, y=Ratio, group=Cell), color="grey") +
geom_line(data=df_tidy2, aes(x=date, y=Ratio, group=Cell), color="grey")+
geom_line(data = df_summary1, aes(x = date, y=mean), color = "red") +
geom_line(data = df_summary2, aes(x = date, y=mean), color = "blue")+
geom_ribbon(data =df_summary1, aes(x= date, ymin=CI_lower, ymax=CI_upper) ,fill="blue", alpha=0.2)+ 
geom_ribbon(data =df_summary2,aes(x= date, ymin=CI_lower, ymax=CI_upper) ,fill="grey", alpha=0.2)+ 
xlab("data") + ylab("Average temperature")

Here is the graph

the df_tidy1 look like:

data.frame(stringsAsFactors=FALSE,
 date = c("1980-01-01", "1981-01-01", "1982-01-01", "1983-01-01",
 "1984-01-01", "1985-01-01"),
 Cell = c("Acsess.4.5", "Acsess.4.5", "Acsess.4.5", "Acsess.4.5",
 "Acsess.4.5", "Acsess.4.5"),
 Ratio = c(29.8715846994536, 29.5917808219178, 29.7479452054795,
 30.2602739726027, 29.266393442623, 29.5342465753425)
)

the df_summary look like

 data.frame(
 date = c("1980-01-01", "1981-01-01", "1982-01-01", "1983-01-01",
 "1984-01-01", "1985-01-01"),
 n = c("5", "5", "5", "5", "5", "5"),
 mean = c("29.8715846994536", "29.5917808219178", "29.7479452054795",
 "30.2602739726027", "29.266393442623", "29.5342465753425"),
 sd = c("0", "0", "0", "0", "0", "0"),
 sem = c("0", "0", "0", "0", "0", "0"),
 CI_lower = c("29.8715846994536", "29.5917808219178", "29.7479452054795",
 "30.2602739726027", "29.266393442623", "29.5342465753425"),
 CI_upper = c("29.8715846994536", "29.5917808219178", "29.7479452054795",
 "30.2602739726027", "29.266393442623", "29.5342465753425")
)

You didn't provide df_tidy2 and df_summary2 but this should give you a good start

library(tidyverse)

ggplot() +
 geom_line(data = df_tidy1, aes(x = date, y = Ratio, group = Cell), color = "grey") +
 # geom_line(data = df_tidy2, aes(x = date, y = Ratio, group = Cell), color = "grey") +
 geom_line(data = df_summary1, aes(x = date, y = mean, color = "RCP4.5")) +
 # geom_line(data = df_summary2, aes(x = date, y = mean, color = "blue")) +
 geom_ribbon(data = df_summary1, aes(x = date, ymin = CI_lower, ymax = CI_upper), 
 fill = "blue", alpha = 0.2) +
 # geom_ribbon(data = df_summary2, aes(x = date, ymin = CI_lower, ymax = CI_upper), fill = "grey", alpha = 0.2) +
 xlab("Date") + 
 ylab("Average temperature") +
 scale_color_manual("Legend", values = c("blue")) +
 scale_x_date(expand = c(0, 0), date_breaks = '18 months', date_labels = "%b-%Y") +
 theme_classic(base_size = 14)

^{Created on 2018-11-16 by the reprex package (v0.2.1.9000)}