如何更改水平 Plotly 条形图中轨迹的顺序？

Question

当我在 R Plotly 中向水平条形图添加轨迹时，附加轨迹位于第一条轨迹上方，但在图例中反之亦然。我怎样才能像传说中那样把额外的树放在第一个树下面？

And/or如何更改图例中的顺序？

library(plotly)
library(dplyr)
df <- mtcars %>% group_by(cyl) %>% summarise_at(c('qsec','mpg'), funs(mean))


figh <- plot_ly(df, y = ~ cyl, x = ~ qsec, type = 'bar', orientation = 'h'
               ,marker = list(color = 'rgb(80, 160, 200)')
)
figh <- figh %>% add_trace(x = ~ mpg
                         ,marker = list(color = 'rgb(220, 80, 80)')
)
figh

Answer 1

要更改图例中的顺序，您可以使用 layout 更改 legend 中的 traceorder。

traceorder...

Determines the order at which the legend items are displayed. If "normal", the items are displayed top-to-bottom in the same order as the input data. If "reversed", the items are displayed in the opposite order as "normal".

https://plotly.com/r/reference/layout/#layout-legend-traceorder

layout(figh, legend = list(traceorder = "reversed"))

如何更改水平 Plotly 条形图中轨迹的顺序？

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r

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