I'm trying to turn a ggplot into a plotly. The ggplot renders fine, but when I put it through ggplotly, suddenly the legend adds parenthesis and ",1" after the label.
Here's a sample fake data:
sorted1<-data.frame(CommDate=c(as.Date("2017-09-12"), as.Date("2017-10-15")), CommName=c("Foo", "Bar"), PubB4=c(2,3))
And here's the code I'm trying to run on it:
ggplotly(ggplot(sorted1, aes(x=as.Date(CommDate), y=PubB4))+
geom_smooth(level=0.0, aes(colour="Moving average"), se=FALSE)+
geom_point(aes(fill=CommName), size=4)+
expand_limits(y=c(0,4.5))+
geom_line(mapping=aes(y=4),colour="orangered3",size=1)+
geom_text(mapping=aes(y=4.2, x=min(sorted1$CommDate)+4), label="Target", size=3)+
xlab("Committee Date")+
guides(fill=guide_legend(title="Committee Names"), colour=guide_legend(title.theme=element_blank(),title=NULL))+
scale_x_date(labels = date_format("%b-%y"))+
theme_light()+
theme(plot.title=element_text(hjust=0.5, size=12),panel.grid.major.x = (element_blank()),
panel.grid.minor.x = (element_blank()),
axis.title = element_text(size=8), legend.title = element_text(size=10),
legend.text = element_text(size=8), legend.box = 'vertical', legend.spacing.y = unit(-2,"mm"))+
scale_colour_manual(name="",values="#0072B2"))
(the geom_smooth
doesn't render here, but it does with the full data.)
Here's what I get from this:
Why does the legend show up as "(foo,1)"?
I tried removing the geom_smooth
which actually solved the problem, but I need it there - how can I keep it but fix the legend?
Thanks!
Update: OK, I started commenting out stuff to see what happens. If I remove the aes()
from the geom_smooth
, that also fixes the problem, as long as I keep the scale_colour_manual
commented off as well. But I really would like to have control over the geom_smooth
's aesthetics, and include it in the legend. So I'm making progress, but still not quite there...
Here's yet another elegant solution. Under the hood it detects if a plotly legend name option is available and if so, removes the "(" and ",1)".
library(ggplot2)
library(plotly)
library(stringr)
library(dplyr)
data = data.frame(Date=as.Date(c("2017-09-12","2017-10-15")), PubB4=c(2,3), category=c("Foo", "Bar"))
myplot = ggplotly(ggplot(data, aes(x=Date, y=PubB4))+
geom_hline(aes(yintercept=2.5, color="my line label"))+
geom_point(aes(fill=category), size=4))
for (i in 1:length(myplot$x$data)){
if (!is.null(myplot$x$data[[i]]$name)){
myplot$x$data[[i]]$name = gsub("\\(","",str_split(myplot$x$data[[i]]$name,",")[[1]][1])
}
}
myplot
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