custom colors in R Plotly

Question

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

Answer 1

Here are a few modifications (~,and ~factor())to the plot_ly statement to get the output to work with newer versions of plotly.

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 = ~factor(z), 
        colors = c("grey50", "blue", "red"), 
        type = "bar") %>% 
  layout(barmode = "stack")

cheers