I have a plot with three different legends: one for linetype
, one for color
, and one for fill
. In the color
and fill
legends there are also some lines which I wish to remove, but how?
Here is some example code:
# some data
hline_df <- data.frame(name = c('a', 'b'), y = c(1, 2))
df <- data.frame(x = c(1, 2), y = c(0.5, 1.5), con = c('a', 'b'), col = c('d', 'e'))
# the plot
ggplot(df, aes(x, y, fill = con)) +
geom_bar(stat = 'identity') +
geom_point(aes(color = col)) +
geom_hline(data = hline_df, aes(yintercept = y, linetype = name),
color = 'red', show_guide = TRUE)
I get the "name" guide for both red lines, that is fine.
The "col" guide has red lines crossing the dots, I want to remove them!
The "con" guide also has red lines which should be removed.
I could modify parts of the legend with
guides(fill = guide_legend(override.aes = list(colour = NULL)),
color = guide_legend(override.aes = list(colour = NULL)))
This removes the colour, but the lines are still there.
Thanks in advance!
You may set linetype = 0
or "blank"
(on different linetype
s here) for the fill
and color
guide
s in your override.aes
call.
Also note that I moved the fill
aes
from the 'top level' in ggplot
to geom_bar
.
ggplot(df, aes(x, y)) +
geom_bar(aes(fill = con), stat = 'identity') +
geom_point(aes(color = col)) +
geom_hline(data = hline_df, aes(yintercept = y, linetype = name), color = 'red', show_guide = TRUE) +
guides(fill = guide_legend(override.aes = list(linetype = 0)),
color = guide_legend(override.aes = list(linetype = 0)))
As suggested by user20650
ggplot(df, aes(x,y)) +
geom_hline(data=hline_df,aes(yintercept=y,linetype=name), color='red',show_guide=TRUE) +
geom_point(aes(color=col), size=5) +
geom_bar(aes(fill=con), stat='identity') +
geom_hline(data=hline_df,aes(yintercept=y,linetype=name), color='red',show_guide=F) +
guides(color = guide_legend(override.aes = list(linetype = 0)))
So the first geom_hline creates the legend but the line is behind the bars...
the second call brings the line in front of the bars but does not print a legend (great idea).
The las guide is overwriting the aesthetics line type with 0... In this way it removes the line from the legends... I tried with NULL
but this didn't worked before...
Thanks again.
Using:
ggplot(df, aes(x,y,fill=con)) + geom_bar(stat='identity') +
geom_point(aes(color=col)) +
geom_hline(data=hline_df,aes(yintercept=y,linetype=name),color='red',show_guide=FALSE) +
guides(linetype=FALSE,color=FALSE)
gives me this plot:
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