Create a color vector from a dataframe in R and create a barplot-CodePudding

I have below dataframe:

City	Cost
Brisbane	1657
Melbourne	7583
Victoria	5738
Sydney	9274
NSW	5938
Adelaide	8223

I want to create a vector from this dataframe by giving different colors to each city. Then I need to plot a barplot City~Cost using that given colors.

I tried below code to create the vector:

cv <- dColorVector(df$City, colorScale = "plasma")

But get an error: could not find function "dColorVector"

Pls help!

CodePudding user response：

It looks like you can easily get the same result directly the viridis package, which is what dColorVector uses anyway.

library(viridis)

cv <- plasma(length(df$City))

cv
#> [1] "#0D0887FF" "#6A00A8FF" "#B12A90FF" "#E16462FF" "#FCA636FF" "#F0F921FF"

barplot(Cost ~ City, data = df, col = cv)