Pareto Charts
This plot shows vertical bars corresponding to the values of the data in descending order of value. This also shows a curve made with the cumulative values above each bar. In addition to this, the right side of the graph has a percentage scale that shows how much percentage each bar contributes to the sum of all values.
Example:
Matlab
% MATLAB code for Pareto Charts example % creating array for years year = 2014:1:2018; % creating array for revenue revenue = [1.72 2.00 2.08 2.67 2.03]; % pareto chart plot pareto(revenue,year) % label for X-axis xlabel('Year'); % label for Y-axis ylabel('Revenue (in Cr.)'); % title for plot title('Yearly Revenue') |
Output:
Bar Graphs (both vertical and horizontal) and Pareto charts can be used to represent data such as marks of a student in different subjects, rainfall received in different months, and many other data sets.
Types of 2-D discrete data plots in MATLAB
Any data or variable that is limited to having certain values is known as discrete data. Many examples of discrete data can be observed in real life such as:
- The output of a dice roll can take any whole number from 1 to 6.
- The marks obtained by any student in a test can range from 0 to 100.
- The number of children in a house.
When dealing with such data, we may require to plot graphs, histograms, or any other form of visual representation to analyze the data and achieve desired results.
MATLAB offers a wide variety of ways to plot discrete data. These include:
- Vertical or Horizontal Bar-graphs
- Pareto Charts
- Stem charts
- Scatter plots
- Stairs
Let us first take some sample 2-D data to work with while demonstrating these different types of plots.
The above data shows the yearly revenue of a company for the duration of 5 years. This data can be shown in any of the above-mentioned plots: