Pie chart in python using dataset example. set_index('activity', inplace=True) print(df) # hours.

You can see how much data nba contains: Python. We will pass in kind = 'pie' keyword, along with the following additional parameters: autopct - is a string or function used to label the wedges with their numeric value. The syntax is given below: matplotlib. 02% dataset is a component dedicated to manage data. We will need pandas packages to show pie plot. These start and end angles can then be used to create actual paths for the wedges in the SVG. The following code shows how to create a pie chart using the ‘pastel‘ Seaborn color palette: Oct 8, 2015 · Note that the groupby calls (which are used to calculate the totals at each level) must have sorting turned off for things to line up correctly. They are less efficient in the case of five or more categories. Figure() method and display it. Use matplotlib. Example 1: Using matplotlib. Let’s see an example to plot pie chart using pandas library dataset as input to chart. The result is a tuple containing the number of rows and columns. g. And data visualization is key, making the exploratory data analysis process streamline and easily analyzing data using wonderful plots and charts. Employee = ['Roshni', 'Shyam', 'Priyanshi', This lesson introduced the concepts and applications of Pie Charts, demonstrated how to create a simple pie chart using the Matplotlib library in Python, and guides on enhancing the visual appeal of the pie chart through customization options, such as "exploding" slices, adding percentages, and including a shadow effect. Exploratory data analysis is a way to better understand your data which helps in further Data preprocessing. Scatter plots are great for determining the relationship between two variables, so we’ll use this graph type for our example. restyle: modify data or data attributes; relayout: modify layout attributes; update: modify data and layout attributes Sep 23, 2022 · Also, use annotations to put text strings inside the Add a numerical column separate from the column of strings marked with dollar signs in the data presented. gca(). The Python matplotlib pyplot pie chart displays the series of data in slices or wedges, and each slice is the size of an item. That is three months (a quarter) sum of In the example above, we built a simple pie chart. x = [15, 25, 25, 30, 5] Aug 1, 2021 · Example 1: Simple pandas pie chart. We then want to label the wedges via annotations. In this post, we will discuss how to use ‘matplotlib’ to create pie charts in python. We first create some dictionaries of common properties, which we can later pass as keyword argument. Sep 26, 2023 · Follow the below steps to use pie chart in you Jupyter Notebook: import the matplotlib module. Here, we are plotting a bar graph hence using the bar () method and the show () method to display the graph. To iterate them in one loop, we zip them. Now, we import the plotly library and use the following syntax to plot the treemap. We start with installing the plotly library using the pip command. pyplot library is most commonly used in Python in the field of machine learning. Your first step when you’re creating a data visualization is specifying which data to plot. shape (126314, 23) You use the Python built-in function len() to determine the number of rows. Even if you’re at the beginning of your pandas journey, you’ll soon be creating basic plots Apr 20, 2023 · Here are the steps to install Seaborn and Matplotlib using Python −. # The slices will be ordered and plotted counter-clockwise. set_index('activity', inplace=True) print(df) # hours. Syntax: matplotlib. pie () function to create the chart, providing the data and labels. Example 1: C/C++ Code # importing modules from Dec 26, 2023 · Python Chart is part of data visualization to present data in a graphical format. The function requires two arguments, which represent the X and Y coordinate values. Add circle at the Center of Pie chart. add_data([398, 294, 840, 462]) # make labels for the slices. The input data you must provide is an array of numbers, where each numbers will be mapped to one of the pie item. iloc[61:,3]. We will be collecting Daily Confirmed Daily Recovered and Daily Deceased in variables as array. In this example, a series is built using pandas. So, run the code below Over 16 examples of Pie Charts including changing color, size, log axes, and more in Python. xticks(rotation=90) Generating Pie Charts in Python With Matplotlib. Charts – Used to visualize the distribution of values. Matplotlib will expect a series of data that it should plot. axes. To create a nested pie chart, we’ll need the following: Python installed on your machine. Although you can set the data in series. To create a scatter plot using matplotlib, we will use the scatter() function. matplotlib. iloc[61:,1]. array or sequence of array to be plotted. You should pass the plot type as 'pie' in the kind argument. Check whether Python is installed on your system by typing the following command: python --version. The label will be placed inside the wedge. Nov 9, 2022 · The python libraries which could be used to build a pie chart is matplotlib and seaborn. Colors are defined in hexadecimal, as usual in HTML. Jan 17, 2023 · You can access columns in the dataset by using their names. In this case, pie takes values corresponding to counts in a group. It’s an open-source Python package that extends the functionality of d3. plot() method, we use the . We’ll use the for loop to iterate rows and create a pie chart for each of them. coord_polar (theta = <“x” or “y”>) The idea is first bar plot is created using geom_bar () and then it is converted to a pie chart using coord_polar () where theta signifies whether You can easily plot a pie chart using the plot() function of pandas library. Installation of Packages. If no column reference is passed and subplots=True a pie plot is drawn for each numerical column independently. pyplot as plt # --- dataset 1: just 4 values for 4 groups: df = pd . Summary statistics – Measures the center and spread of values. Using the go. Chart. Nov 30, 2022 · Every menu button is associated with a Menu widget that can display the choices for that menu button when clicked on it. It is easy to use and emulates MATLAB like graphs and visualization. Here I will use the Covid-19 dataset to visualize the Apr 10, 2024 · Bar Graphs. To create a pie chart, we must modify the application code slightly. labels = 'Ruby', 'C', 'Python', 'Java'. chart = PieChart3D(250, 250) # pass your data to the chart object. Students are then prepared for practice exercises to apply and strengthen Sep 30, 2022 · Matplotlib is a low-level library of Python which is used for data visualization. Simple Example. A bar chart describes the comparisons between the discrete categories. js and stack. In matplotlib, the pie () function is used to create a pie chart. Y = data. Also, Read – 200+ Machine Learning Projects solved and Explained. Jun 26, 2021 · Data Visualization helps in finding hidden insights by providing skin to your raw data (skeleton). PIE CHART : To visualize the numerical proportion occupied by each category, use the plt. Setting the Split by control to Neighborhood will split the pie chart into N series, where N is the number of unique neighborhood values. Jun 20, 2024 · A bar plot or bar chart is a graph that represents the category of data with rectangular bars with lengths and heights that is proportional to the values which they represent. There are three common ways to perform univariate analysis on one variable: 1. A pie plot is a proportional representation of the numerical data in a column. Dec 22, 2022 · case_time_series. We will use the Telco Customer Churn dataset from Kaggle for this analysis. The below programs will depict 3D wireframe. Matplotlib: a plotting library. A pie chart is a good fit for this use case. pie(x, labels = None) Apart from the above 3. The base dataset will be the iris dataset which we will import from sklearn. First, import the necessary libraries, then define your data for the pie chart. text() function. It involves using Python libraries to inspect, summarize, and visualize data to uncover trends, patterns, and relationships. Jun 27, 2021 · How to Plot Pie Chart in Python. import pandas as pd. To code a pie chart in Python, you can use libraries like Matplotlib or Seaborn. The only real pandas call we’re making here is ma. python pie-chart gplv3 easter-egg md txt gpl3 joke-program uoffice uoffice-suite uoffice-easteregg uoffice-jokeprogram pieman uoffice-pieman Basic Pie Chart. Nov 29, 2023 · A pie chart is a popular data visualization technique that visually represents data using slices or wedges of a circle. If Python is installed, the version number will be displayed. In this article, you’ll gain a comprehensive understanding of the diverse range of plots and charts supported by Matplotlib Jul 5, 2019 · We’ll use Plotly as a primary charting library. pie() for the specified column. The bar plots can be plotted horizontally or vertically. The config of the pie chart is not completely the same as the line chart and bar chart. You can label each wedge, specify colors, and explode one or more wedges out from the center for emphasis. The only mandatory argument is the data we'd like to plot, such as a feature from a dataset: [ ] import matplotlib. Dec 28, 2022 · Example 1. They're an intuitive and simple way to visualize proportional data - such as percentages. # create data: an array of values. Example 1: Pie Chart with Pastel Seaborn Color Palette. set_pie_labels("Lithuania Bulgaria Ukraine Romania". Oct 11, 2016 · You can try Seaborn's Pie Plot. Draw a circle of suitable dimensions. Creating a pie chart is very similar to creating a line chart, only instead of using the . They represent data using rectangular bars where the length of each bar corresponds to the value it represents. May 17, 2024 · options data setup Feb 25, 2021 · In this article, we are going to see how to display the value of each bar in a bar chart using Matplotlib. legend()` function. So it was just a simple pie chart, now let’s see how to visualize pie charts using Python using realtime dataset. Pie charts are mainly used to show the proportion of several categories compared with the total. Python3. The syntax of this pie function is. Pie Chart. Jul 10, 2024 · Exploratory data analysis (EDA) is a critical initial step in the data science workflow. pie(x, explode=None, labels=None, colors=None, autopct=None, pctdistance=0. Divide the sections equally in the pie chart since the categories are equally distributed. pyplot as plt. Axes. In the outer circle, we'll plot them as members of their Seaborn is a Python data visualization library based on matplotlib. It helps in plotting the graph of large dataset. Donut Chart. scatter () in Python. A pie chart uses a circle or sphere to represent the data, where the circle represents the entire data, and the slices represent the data in parts. Install packages using below command. The legend provides a visual representation of the labels in the pie chart. After the materials, x_pos, and CTEs (the labels below the bars) are defined, the bar chart is created using the ax. # Data to plot. pie (data, explode=None, labels=None, colors=None, autopct=None, shadow=False) data represents the array of data values to be plotted, the fractional area of each slice is represented by data/sum (data). Parameters: yint or label, optional. shape attribute of the DataFrame to see its dimensionality. Open a command prompt or terminal window. It is one of the simplest visualization libraries for JavaScript, and comes with the many built-in chart types: Scatter Plot. pie() method is readily available for creating your pie chart. Customize the chart as desired by adding a title, legend, or exploding slices. Mar 21, 2022 · To plot a pie chart from a dataframe df you can use Panda's plot. plot() internally, so to integrate the object-oriented approach, we need to get an explicit reference to the current Axes with ax = plt. Well, as we see here, the donut is a pie, having a certain width set to the wedges, which is different from its radius. pyplot. Frequency table – Describes how often different values occur. For example, in this data set, we can use a pie chart to visualize the proportion of players from England, Germany and Spain. output_notebook () will render your visualization directly in a Jupyter Notebook. Apr 8, 2024 · Matplotlib is easy to use and an amazing visualizing library in Python. plot. Then finally we create a figure object using go. Matplotlib maintains a handy visual reference guide to ColorMaps in its docs. Sep 10, 2022 · Creating a Treemap with Plotly Express. js. import io. Related course: Data Visualization with Matplotlib and Python. values = [13, 45, 23, 34, 96, 76] Plot the Pie Chart using pie () method. In plotnine, you do this by creating a ggplot object and passing the dataset that you want to use to the constructor. Mar 27, 2023 · Creating a Simple Donut Chart. In a pie chart, the central angle, area, and arc 3. The parameter values we are passing as labels1 and values1. It calculates the start angle and end angle for each wedge of the pie chart. Bar graphs are effective for comparing data across different categories or groups. Pie charts have some drawbacks: Angles are more difficult to interpret for the human eye than lengths and often can be misleading. We'll first generate some fake data, corresponding to three groups. The d3. pie() method. ”. It is built on NumPy arrays and designed to work with the broader SciPy stack and consists of several plots like line, bar, scatter, histogram, etc. Pandas: a library to prepare data for plotting. Here’s a breakdown of the key steps in performing EDA with Python: 1. groupby(["Product Name;"]). It's as easy as it gets. pip install --upgrade plotly #optional command to avoid any version related errors pip install plotly-express. Using this series, we will plot a pie chart which tells us which fruit is consumed the most in India. Aug 28, 2021 · 5. All you have to do is to import the library and play around with it: import seaborn as sns For starters, here's the dataset's top 5 rows retrieved by the head() method: The dataset has 3 classes: Nov 29, 2023 · matplotlib. Go through as many documents as you can before you get killed by fantoms. We'll cover how to plot simple charts, as well as how to customize them, with examples. It is mainly used in data analysis as well as financial analysis. pie() method, and also defined the values = and names = arguments to build the pie chart. Then, pass the array of values to the ‘labels’ parameter to add labels. Once done, the plt. Nov 8, 2013 · Maybe add these information to the legend. 🔥. For example, you can code dataset["Age"] in your Python script to access the age field. bar() method. Import pandas libraries in our python pie plot code to get started with Mar 8, 2022 · Creating Box Plot. text() function: This functio Dec 16, 2022 · Example 1 The 2D pie chart is a simple circle divided into sectors to represent each category in a dataset. Label or position of the column to plot. Matplotlib stands as an extensive library in Python, offering the capability to generate static, animated, and interactive visualizations. After all, data is the most common part to be changed Aug 19, 2022 · Python Machine learning Scikit-learn - Exercises, Practice and Solution: Write a Python program to create a Pie plot to get the frequency of the three species of the Iris data. There are multiple ways to output your visualization in Bokeh. Importing Libraries: matplotlib allows to build a pie chart easily thanks to its pie() function. Dec 19, 2021 · In this article, we will learn how to plot pie charts using seaborn and matplotlib. The sunburst chart is also referred to by other names like multi-level pie chart, ring chart, donut chart, doughnut chart, or radial treemap. Bar Graph Example. We will create the rest of the dataset according to need. so you have to do that first: df = df. It provides a high-level interface for drawing attractive and informative statistical graphics. Interactive Data Analysis with FigureWidget ipywidgets. In this article, we will be discussing various Python Charts Feb 6, 2022 · The minimal syntax for creating the Pie chart in ggplot2 is as follows –. pie() function. Wedge object; therefore in addition to Dec 23, 2021 · Creating Pie Charts with Python Matplotlib. Apr 12, 2021 · In this tutorial, we'll go over how to plot a Pie Chart in Python with Matplotlib. Hello, Welcome to the world of EDA using Data Visualization. The radians represent the proportion of each category. There is no need to configure the axis. # library. ggplot (<data>, mapping = aes (<mapping>)) + geom_bar (stat=”identity”) +. iloc[61:,5]. Unlike bar charts, pie charts are supposed to depict the categories that constitute the whole, e. values #Stores Daily Recovered D = data. The labels and sizes for these sectors are defined by labels and sizes respectively in the program. This calls plt. In this section, we’ll apply what you learned in the previous sections to create and style a pie chart. 46%), Microsoft (30. bar() method requires two positional arguments, a list of bar positions and a list of bar heights. In this second example, we will modify the color of the sectors of the pie chart. In plotly, there are 4 possible methods to modify the charts by using update menu method. For instance: # initialize chart object, 250 x 250 pixels. The size is used to calculate the angle of the sector. For a brief introduction to the ideas behind the library, you can read the introductory notes or the paper. Bar graphs are one of the most commonly used types of graphs for data visualization. js is an free JavaScript library for making HTML-based charts. To have one, we need to perform one more step of group-by aggregation on transaction revenue (df_monthly_revenue) we have while creating our line plot above. For assigning the values to each entry, we are using numpy random function. DataFrame({'activity': ['Work', 'Sleep', 'Play'], 'hours': [8, 10, 6]}) df. Bar Chart. Dec 26, 2021 · The area of the slices is equal to the percentage of the parts of the data. It can plot graph both in 2d and 3d format. Here’s a simple example that demonstrates how to generate a . pip install pandas Import libraries. Jan 9, 2024 · To create static, animated and interactive visualizations of data, we use the Matplotlib module in Python. To draw a pie chart in Python, use the matplotlib library’s pie() function. Here’s an example code that produces a pie chart with 4 slices: import matplotlib. g label = [‘apples’ , ‘bananna’, ‘orange’] Take the values in an array, e. For example, when displaying a pie chart for a dataset related to parking violations in a city, the Category control is set to ViolationType to see the breakdown of violations by type. May 16, 2024 · A pie chart is a pictorial or graphical representation of data in chart format. The matplotlib. df = pd. Pie chart is one of the easiest ways to present and understand the given data, and pie charts are used very commonly. Oct 12, 2020 · A pie chart is a type of chart that is shaped like a circle and uses slices to represent proportions of a whole. 6, shadow=False, Aug 29, 2022 · A simple guide to creating sunburst charts in Python using interactive data visualization library Plotly. This method is straightforward and suitable for quick, basic visualizations. We need 3 arrays: values, labels and colors. We use this type of pie chart to visually compare the share of categories as part of the whole. We’ll iterate only 8 rows in this example so we’re using table. Mar 23, 2020 · Pie Chart. plt. By Artturi Jalli. subplots() ax. Putting it all together (besides the special chars - I had some problems activating TeX), try the following code: # -*- coding: UTF-8 -*-. Example 2: Adjust Colors of Pie Chart Sectors. To plot a pie chart in Matplotlib, we can call the pie () function of the PyPlot or Axes instance. Not only this also helps in classifying different dataset. # library import pandas as pd import matplotlib . Take the labels of your data in an array, e. pyplot module of matplotlib library provides boxplot () function with the help of which we can create box plots. You also use the . Mathplotlib's ax. pie(x, labels) Generating Your First Figure. Creating a Donut Chart involves three simple steps which are as follows : Create a Pie Chart. Nov 7, 2016 · Step 3 — Plotting Data. data = '''. This function wraps matplotlib. Pip: package management system (it comes with Python) Jupyter Notebook: an online editor for data visualization. Got it! This site uses cookies to deliver our services and to show you relevant ads. pie() function takes a list of input values and visualizes a simple pie chart. values #Stores Daily Deceased Even though there exists more packages to create pie charts, like ggplot2, in this tutorial we will review how to create circle chart with the pie function and the PieChart function of the lessR package, to display percentages. Here’s an example code snippet that demonstrates how to add a legend to a pie chart: Code: Plot a pie chart of animals and label the slices. In this article, we will be using multiple datasets to show exactly how things work. Click Events May 26, 2020 · A pie chart is a type of data visualization that is used to illustrate numerical proportions in data. Example. Import Matplotlib and Pandas module, and read the excel file using the Pandas read_excel () method. Power BI Desktop replots the visual when you select Run from the Python script editor title bar, or whenever a data change occurs due to data refresh, filtering, or highlighting. Mar 4, 2022 · A pie chart is a circular statistical graphical chart, divided into slices that illustrate numerical proportions in data. The python library ‘matplotlib’ provides many useful tools for creating beautiful visualizations, including pie charts. plotly is an interactive visualization library. pie() method we create dataset ‘data1’. 5) would create donuts (pie charts with holes in the center). The following code shows how to create a basic pie chart for a dataset using ggplot2: Mar 21, 2024 · Matplotlib. May 24, 2019 · The pie chart does not 'know' that you want all items with same product name grouped and summed over in your chart. plot(). The following code creates a ggplot object using plotnine’s fuel economy example dataset, mpg: Python. Use the numerical column for the pie chart and the original dollar-marked column for the text. html') will write the visualization to a static HTML file. , passengers of a ship. pie: df. chart. Visit the installation page to see how you can download the package and Jul 10, 2024 · To add a legend to the pie chart, we can use the `plt. To begin with, ensure you’ve imported the required module using: import matplotlib. Feb 1, 2024 · Step 1: Pre-Requisites for Building a Churn Prediction Model. In order to draw the matplotlib chart in Python, you have to use the pyplot pie function. Python’s popular data analysis library, pandas, provides several different options for visualizing your data with . split()) Feb 12, 2021 · In the code above, the pyplot. 3. The Matplotlib. pie(sizes, labels=labels) Each slice of the pie chart is a patches. values #Stores Daily Confirmed R = data. In the following example, we have taken four sectors. 2. Tutorial explains how we can use plotly express and plotly graph objects API of a library to create sunburst charts. head (8) instead of table. You also need a Python IDE to run the codes provided here, and I suggest using a Jupyter Notebook since the software makes it easy to run code snippets and create visualizations. Draw pie charts with a legend. This is done via the wedgeprops argument. pie() function takes in a dataset and creates handy data for us to generate a pie chart in the SVG. boxplot (data, notch=None, vert=None, patch_artist=None, widths=None) Parameters: Attribute. Let’s get started! Flask line-chart. Nov 22, 2021 · You can remember this because the prefix “uni” means “one. Each slice in the chart represents a category or a portion of the whole, with the size of the slice proportional to the corresponding data value. Apr 18, 2020 · Step 2: Plot the data. In the inner circle, we'll treat each number as belonging to its own group. legend() ; Python's len() function returns the length of a list, array, dictionary or tuple. The example below shows a 2D pie chart that visually depicts the market share of web servers: Apache (44. There are two different ways to display the values of each bar in a bar chart in matplotlib - Using matplotlib. sum() This sets the product name column as index of the df so change your product_data column selection to this: Matplotlib is a powerful visualization library in python and comes up with a number of different charting options. Let's see an example of how pie plot was used to visualize the famous Iris flower data. scatter () in Python extends to creating diverse plots such as scatter plots, bar charts, pie charts, line plots, histograms, 3-D plots, and more. Sep 14, 2022 · Using the titanic dataset as an example, I have created a pie chart that reflects the numbers of people who embarked on the ship from three ports, being Southampton, Cherbourg, and Queenstown. Mar 8, 2024 · Method 1: Basic Pie Chart. In-order to visualize data using 3D wireframe we require some modules from matplotlib, mpl_toolkits and numpy library. After reading data for the x-axis and y-axis from the excel file. Feb 16, 2023 · We can use the “xticks()” method to rotate the values: plt. gl and offers sophisticated charts which can meet the requirements of any project. visualization of data in Python. You can plot a pie chart in matplotlib using the pyplot’s pie() function. One of the axis of the plot represents the A yellow pie chart comes alive in the style of Pacman, and he is hungry for your documents. Consider, for instance, that you want May 20, 2024 · The donut chart displays the distribution of passenger classes, allowing us to see the proportions of each class relative to the whole dataset. Matplotlib’s pyplot module provides a pie() function that creates pie charts with a simple list of values. This tutorial explains how to create and modify pie charts in R using the ggplot2 data visualization library. Consider the following example. The following is the syntax: import matplotlib. It has a feature of legend, label, grid, graph shape, grid and many more that make it easier to Python matplotlib Pie Chart. Jul 20, 2021 · The following examples show how to use this syntax in practice. This library is built on the top of NumPy arrays and consist of several plots like line chart, bar chart, histogram, etc. Related course Python Flask: Make Web Apps with Python. View Tutorial. Pie charts are a useful way to visualize proportions in your data. data. Plotly is a Python library which is used to design graphs, especially interactive graphs. size_of_groups=[12,11,3,30] Jun 25, 2024 · 12. The main purpose of a pie chart is to showcase the distribution or composition Aug 31, 2022 · Introduction. Your dataset is also very non-uniform, so I just made some random data to spread out the resulting chart a bit for the sake of illustration. If it is a format string, the label will be fmt%pct. In this tutorial, you’ll see these two options: output_file ('filename. Seaborn is a Python data visualization library based on matplotlib. pie(y='column_name') Example: import pandas as pd. # Pie chart, where the slices will be ordered and plotted counter-clockwise: labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'. Creating a pie chart. Previous Next . Line Chart. pyplot as plt labels = 'Frogs', 'Hogs', 'Dogs', 'Logs' sizes = [15, 30, 45, 10] fig, ax = plt. It helps people understand the significance of data by summarizing and presenting huge amounts of data in a simple and easy-to-understand format and helps communicate information clearly and effectively. Being high-level, Plotly is more convenient to work with, and for this reason, I prefer it to matplotlib. Plot the graph using the Matplotlib library. startangle - rotates the start of the pie chart by angle degrees counterclockwise from the x-axis; shadow - draws a shadow beneath the pie; Set the labels to None to remove the labels from the pie chart and add a separate legend using plt. wedgeprops=dict (width=. For example, the pie chart below shows a simple monthly budget of this baker I know, where the total percentage is 100 and the total of the arc measures should be 360°. Crafting a Pie Chart with Matplotlib. import matplotlib. How to Make a Basic Pie Chart. In the code, we simply passed the DataFrame to the px. Whether you’re just getting to know a dataset or preparing to publish your findings, visualization is an essential tool. data for every series, we recommend you use the dataset to manage the data since ECharts 4 so that the data can be reused by multiple components and convenient for the separation of "data and configs". csv dataset has 7 column. Another insight we can delve into is the quarterly contribution to the whole year's revenue. import numpy as np. Python Program. Jun 28, 2021 · Pie plot using Plotly in Python. To add labels, pass a list of labels to the labels parameter. The most straightforward way to build a pie chart is to use the pie method. >>> len(nba) 126314 >>> nba. Sure, you can use pygooglecharts, which is a python wrapper for Google Charts. It provides a lot of flexibility but at the cost of writing more code. It can plot various graphs and charts like histogram, barplot, boxplot, spreadplot and many more. 1%), Zeus (0. Value. Use the plt. The pie() R function The R pie function allows you to create a pie chart in R. lb zk vi hh tc jk jo uk iu xo