Function Plotter

Overview

This project is a simple function plotter application built using PySide2 for the GUI and Matplotlib for plotting. The application allows users to input a mathematical function and plot its graph over a specified range.

Features

• Input a function of x, e.g., 5*x^3 + 2*x.
• Specify minimum and maximum values for x.
• Supports operators: +, -, /, *, ^, log10(), sqrt().
• Input validation with user-friendly error messages.
• GUI built using PySide2.
• Plotting powered by Matplotlib.

Compatibility

This project is developed and tested using Python 3.9. Due to compatibility issues with PySide2 in newer Python versions, it is highly recommended to use Python 3.9 for running this application.

Download Python 3.9.6 from the official Python website: Python 3.9.6

The version used in this project is python3.9.6 that is mentioned above.

Installation

1. Clone the repository:

   git clone https://github.com/HalemoGPA/master_micro_task.git
   cd master_micro_task

2. Create a virtual environment:

   python -m venv master_micro
   master_micro\Scripts\activate   # On macOS and Linux, use `source master_micro/bin/activate`

3. Install the required dependencies:

   pip install -r requirements.txt

Running the Application

To run the application, execute the following command:

python src/main.py

Running the Tests

To run the tests, use the following command:

pytest

Examples

Basic Function Input

• Function: 5*x^3 + 2*x
• Range: 0 to 10
• Expected Output: Parabolic curve.
  
  

Invalid Character in Function

• Function: 5*x^3 + 2*x + !
• Range: 0 to 10
• Expected Output: Error message: "Function contains invalid characters."
  
  

Complex Formula Function

• Function: 5*x^3 + 2*x -4/x + 7
• Range: -10 to 10
• Expected Output: Combined plot of Cubic and rational functions.
  
  

Using Sqrt & log10 in Function

• Function: 2*x^4 - log10(x) + sqrt(x)
• Range: 0 to 50
• Expected Output: Combined plot of square root, logarithm, and quadratic function.
  
  

Negative Input to sqrt or log10

• Function: 2*x^4 - log10(x) + sqrt(x)
• Range: -50 to 500
• Expected Output: Error message: "Min value must be non-negative for functions with log10 or sqrt."
  
  

Wrong Input for Min and Max Values

• Function: x
• Range: a to 2
• Expected Output: Error message: "Min and Max values must be numbers."
  
  

Using -inf and +inf for min and max values

• Function: x
• Range: -inf to inf
• Expected Output: Straight 45deg line from -inf to +inf
  
  

Constant Function Formula

• Function: 5
• Range: -10 to 10
• Expected Output: Straight horizontal line from -inf to +inf
  
  

Empty Function

• Function:
• Range: to
• Expected Output: Error message: "Function cannot be empty."
  
  

Min value is larger than Max value

• Function: x
• Range: 10 to 5
• Expected Output: Error message: "Min value must be less than Max value."
  
  

Empty Min value

• Function: x
• Range: to 5
• Expected Output: Error message: "Min and Max values cannot be empty."
  
  

Screenshot of running the automated tests