[英]plotly bar chart with number of colors = number of categories
对于以下对象:
rawData <-
structure(list(obs = c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), key = structure(1:8, .Label = c("sadness",
"neutral", "contempt", "disgust", "anger", "surprise", "fear",
"happiness"), class = "factor"), value = c(2.36220472440945,
89.3700787401575, 0.393700787401575, 0.78740157480315, 0, 0.78740157480315,
0, 6.2992125984252)), .Names = c("obs", "key", "value"), row.names = c(NA,
8L), class = "data.frame")
我正在寻找创建一个情节条形图,同时为每个条指定颜色。 不幸的是,它只需要n-1种颜色,为剩余的颜色创建自己的“渐变”。
rawData %>%
group_by(obs) %>%
plot_ly(x = obs,
y = value,
type = "bar",
color = key,
colors = c("blue","grey","darkred","green","orange","black","purple"))
如果我尝试添加第8种颜色......
rawData %>%
group_by(obs) %>%
plot_ly(x = obs,
y = value,
type = "bar",
color = key,
colors = c("blue","grey","darkred","green","orange","black","purple","yellow"))
现在所有的酒吧都是黄色的。
请使用color
参数来marker
参数。
rawData %>%
group_by(obs) %>%
plot_ly(x = obs,
y = value,
type = "bar",
color = key,
marker = list(color=c("blue","grey","darkred","green","orange","black","purple","yellow")))
作为替代方案,您还可以使用ggplot2绘制情节图,这将为您提供所需的内容。
p <- ggplot(data=rawData, aes(x=obs, y=value, color=key, group=key, fill=key)) + geom_bar(stat='identity', position='dodge') + scale_fill_manual(values=c("blue","grey","darkred","green","orange","black","purple","yellow")) + scale_color_manual(values=c("blue","grey","darkred","green","orange","black","purple","yellow"))
ggplotly(p)
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