[英]How to change legend position in ggvis?
I would like to change the default position of the legend in a ggvis
plot. 我想在
ggvis
图中更改图例的默认位置。
library(ggvis)
data(mtcars)
mtcars %>%
ggvis(x=~wt, y = ~mpg, fill = ~cyl) %>%
layer_points()
By default, the legend is on the right side. 默认情况下,图例位于右侧。 How to put it on the top?
如何放在顶部?
With ggplot
you can achieve this simply but I could not find any similar way to do the same with ggvis
. 使用
ggplot
可以简单地实现这一点,但是我找不到使用ggvis
进行相同操作的任何类似方法。
library(ggplot2)
mtcars %>%
ggplot(aes(x=wt, y=mpg, fill=cyl)) +
geom_point() +
theme(legend.position = 'top')
This thread suggests that up until now you cannot change the orientation of the legend, but is it true for the position as well? 该线索表明,到目前为止,您无法更改图例的方向,但是位置也是如此吗?
Look at ?add_legend
and ?legend_props
. 查看
?add_legend
和?legend_props
。 I don't think you can do position=top
etc, but you could use the x and y ranges of the data to position the legend exactly at the mid-top like with position='top'
in ggplot()
. 我不认为可以进行
position=top
等操作,但是可以使用数据的x和y范围将图例准确定位在中上position='top'
, ggplot()
position='top'
。
mtcars %>%
ggvis(x=~wt, y = ~mpg, fill = ~cyl) %>%
layer_points() %>%
add_legend("fill", properties=legend_props(
legend=list(x=scaled_value("x", 3.25), y=scaled_value("y", 40))
)
)
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