删除ggplot中的填充图例 [英] Remove fill around legend key in ggplot
问题描述
我想删除图例周围的灰色矩形。
ggtheme< -
主题(
轴。 text.x = element_text(color ='black'),
axis.text.y = element_text(color ='black'),
panel.background = element_blank(),
面板。 grid.minor = element_blank(),
panel.grid.major = element_blank(),
panel.border = element_rect(color ='black',fill = NA),
strip.background = element_blank(),
legend.justification = c(0,1),
legend.position = c(0,1),
legend.background = element_rect(color = NA),
legend.key = element_rect(color =white,fill = NA),
legend.title = element_blank()
)
颜色< - c (红,蓝)
df < - data.frame(year = c(1:10),value = c(10:19),gender = rep(c(male,女性),每个= 5))
ggplot(df,aes(x = year,y = value))+ geom_point(aes(color = gender))+
stat_smooth(method =loess ,公式= y〜x,等级= 0,大小= 1,
aes(group = gender,color = gender))+
ggtheme + scale_color_manual(values = colors)
由于使用 stat_smooth() code>,作为默认值,也会使用一些填充(灰色如果
fill =
不在 aes( )
一个解决方案是为<$ c设置 se = FALSE
如果你不需要置信区间,$ c> stat_smooth()。
aes(group = gender,color = gender),se = FALSE)
另一个解决方案是使用函数 guides()
和覆盖。 aes =
从图例中删除填充,但k
+ guides(color = guide_legend(override.aes = list(fill = NA)))
I would like to remove the gray rectangle around the legend. I have tried various methods but none have worked.
ggtheme <-
theme(
axis.text.x = element_text(colour='black'),
axis.text.y = element_text(colour='black'),
panel.background = element_blank(),
panel.grid.minor = element_blank(),
panel.grid.major = element_blank(),
panel.border = element_rect(colour='black', fill=NA),
strip.background = element_blank(),
legend.justification = c(0, 1),
legend.position = c(0, 1),
legend.background = element_rect(colour = NA),
legend.key = element_rect(colour = "white", fill = NA),
legend.title = element_blank()
)
colors <- c("red", "blue")
df <- data.frame(year = c(1:10), value = c(10:19), gender = rep(c("male","female"),each=5))
ggplot(df, aes(x = year, y = value)) + geom_point(aes(colour=gender)) +
stat_smooth(method = "loess", formula = y ~ x, level=0, size = 1,
aes(group = gender, colour=gender)) +
ggtheme + scale_color_manual(values = colors)
You get this grey color inside legend keys because you use stat_smooth()
that as default makes also confidence interval around the line with some fill (grey if fill=
isn't used inside the aes()
).
One solution is to set se=FALSE
for stat_smooth()
if you don't need the confidence intervals.
+stat_smooth(method = "loess", formula = y ~ x, level=0, size = 1,
aes(group = gender, colour=gender),se=FALSE)
Another solution is to use the function guides()
and override.aes=
to remove fill from the legend but keep confidence intervals around lines.
+ guides(color=guide_legend(override.aes=list(fill=NA)))
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