R Plotly中的自定义颜色 [英] custom colors in R Plotly
问题描述
我目前是Plotly的初学者,遇到了我似乎无法解决的问题.我有条理排列的条形图,但我不知道如何为每个类别着色.我当前正在使用R.
I'm currently a beginner in Plotly and have a problem I can't seem to solve. I have my plotly stacked bar chart but I don't know how to color each individual category. I am currently using R.
这是我当前的堆积条形图:
This is my current stacked bar chart:
我当前的代码是:
p = plot_ly(x, x = day, y = count, type = "bar", group = status) %>% layout(barmode = "stack", showlegend = T)
我尝试使用"color = "
参数和标记,但是没有正确为我的图形着色.
I've tried using the "color = "
parameter and also markers, but nothing correctly colors my graph.
推荐答案
您需要为color
参数指定一个因子,然后为colors
参数指定颜色的向量.
You need to specify a factor for the color
parameters, and then a vector of colours for the colors
parameter.
这是一个简单的解决方案.在绘制之前,请注意数据框上所需的排序.
Here is a simple solution. Note the ordering required on the data frame before plotting.
require(dplyr)
require(plotly)
set.seed(42)
df <- data.frame(x = rep(LETTERS[1:5], 3),
y = rexp(15, rate = 0.5),
z = c(rep("Adam", 5), rep("Arthur", 5), rep("Ford", 5)))
df <- arrange(df, desc(z))
plot_ly(df,
x = x,
y = y,
color = z,
colors = c("grey50", "blue", "red"),
type = "bar") %>%
layout(barmode = "stack")
数据框上的排序很奇怪.我本以为plot_ly
将使用级别的顺序,但不会.
The ordering on the data frame matters strangely. I would have thought plot_ly
would use the order of the levels but it doesn't.
本示例使用plotly
3.x.x.如果您使用plotly
4.x.x或更高版本,则此代码可能无法按原样工作.详情请参阅此处: https://www. r-bloggers.com/upgradeing-to-plotly-4-0-and-above/
This example uses plotly
3.x.x. If you use plotly
4.x.x or above, this code may not work as is. See here for more details: https://www.r-bloggers.com/upgrading-to-plotly-4-0-and-above/
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