Customize the color of plot points in R highcharter based on their values

I'm diving into the world of highcharts and R highcharter for the first time. Currently, I have a dataframe structured like this:

tmp <- data.frame(x = 1:5, y = rnorm(5), color = c("green", "red", "green", "orange", "red"))
# x       y  color
# 1  0.4421  green
# 2 -0.8924    red
# 3  0.8264  green
# 4  0.6695 orange
# 5 -0.0966    red

I'm looking to visualize this data using highcharter. https://i.sstatic.net/BXQLu.png

Specifically, I want each point to be colored according to the color value in the dataframe.

What steps should I take? I'm open to solutions in JavaScript as well, as I can easily adapt them to R.

javascriptrhighchartsshinyr-highcharter

Answer №1

When you provide the color variable in hexadecimal format, highcharter will be able to detect and use those colors.

tmp <- data.frame(x = 1:5, y = rnorm(5), color = c("#00FF00", "#FF0000", "#00FF00", "#ffa500", "#FF0000"))

hchart(tmp, "line", hcaes(x, y, color = color))

https://i.sstatic.net/Ylayk.png

Answer №2

A slightly enhanced approach:

set.seed(1)
data_points <- data.frame(x = 1:5, y = rnorm(5), 
          color = c("green", "red", "green", "orange", "red"))
placeholder <- "two"

library(highcharter)
hchart(data_points, type="scatter", hcaes(x=x, y=y, color=color), 
       marker=list(symbol='circle', radius=5), zIndex=1) %>% 
  hc_add_series(data_points, type="line", color="lightblue", zIndex=0)

https://i.sstatic.net/abcd.png

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