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How to make histogram bars to have different colors in Plotly in R?

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  • Last Updated : 24 Nov, 2022
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In this article, we are going to discuss making histogram bars to have different colors in Plotly in R Language. The Histogram is defined as the bar graph representation of data along the x-axis. The plotly package contains plot_ly() function which is used to visualize different plots in R like scatter plots, histogram,pie chart etc,.

Syntax: plot_ly(df,type,marker,layout)

Where,

  • df -dataframe
  • type – used to specify the type of plot we want to visualize
  • marker – used to mark the plot with different colors using color attribute
  • layout – Contain attributes that are used to modify the properties of layout like Title etc,.

Create a histogram with different colors

First, we need to install and load the required package and then create the sample data frame which contains a vector of numbers. Using plot_ly() function we are going to plot the histogram and using marker attribute and we can specify list of colors we want to plot to different bars.

R




# install required packages
install.packages("plotly")
 
# Load the installed package
library(plotly)
 
# creation of sample dataframe (vector of numeric values)
df <- c(1,2,3,4,5,6,7,8)
 
# Plotting the scatter plot using plot_ly() function
plot_ly(x=df, type="histogram",
        marker=list(color=c('green','red',
                            'blue','yellow'))) %>%
  layout(title="Histogram using Plotly")


Output:

 

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