While i'm using values in scale_*_manual getting unused value in legend in for loop. Please do the needful.
The below code is without scale_color_manual and the result attached below the code.
Inv_sub_part1[[6]]%>%ggplot(aes(x=RELATIVE_ACT_TIME,y=CONC,group=TRT))+
geom_point(aes(color=QVAL),size=4)+
geom_line(aes(color=QVAL),size=0.86)
When i use the scale_color_manual and I'm getting the additional legend, in previous versions it was not there .
After updating to latest version of ggplot2, it was started.
Inv_sub_part1[[6]]%>%ggplot(aes(x=RELATIVE_ACT_TIME,y=CONC,group=TRT))+
geom_point(aes(color=QVAL),size=4)+
geom_line(aes(color=QVAL),size=0.86)+
scale_color_manual(name="Treatment",
values = c("NON-NULL"="black","NULL"="grey60"),drop=TRUE)