function-visualiser

A python project to visualize mathematical function

Key Features • How To Use • Next step • License

Key Features

• Allows the user to plot any function, or the function derivative.
• Everthing is reziable. The user can set custom intervals, modify the size of the window, etc

How To Use

To clone and run this application, you'll need Git, Python and Tkinter. From your command line:

# Clone this repository
$ git clone https://github.com/GouruRK/function-visualizer.git

# Go into the repository
$ cd function-visualizer

# Run the app
$ python3 graphic.py 'your functions'

This project support basic operators, such as:

• '+'
• '-'
• '/'
• '*'
• '^' (for power)

Precisions

• All functions arguments must be 'x'.
• All functions must be written between quote marks ('').
• To plot a function derivatives, you just need to add d before the function expression.
• To draw multiple function, just add a space between two expressions.
• Parentheses are supported.

Settings

All default settings are written in the settings.py file. You can modify them to customize the graphic.

X_MIN = -5     # The smallest abscissa
X_MAX = 5      # The biggest abscissa
Y_MIN = -5     # The smallest ordinate
Y_MAX = 5      # The biggest ordinate
STEP = 0.001   # The gap between each point
WIDTH = 400    # The width of the window
HEIGHT = 400   # The height of the window
AXES = True    # True to display the axes, False to hide them

The FUNCTIONS = [] parameters will be automaticly modify depending on your arguments given by command line.

Examples

# Plot the funtion y=2+x
$ python3 graphic.py '2+x'

# Plot the function y=2/x derivatives
$ python3 graphic.py 'd2/x'

# Plot the function y=2x and his derivatives at the same time
$ python3 graphic.py '2*x' 'd2*x'

Next step

This is just the begining of the project, and more things will be add, such as pre-define functions (cos, sin, exp, sqrt, log, etc). A nice way to do that, is by implementing the shutting yard algorithm. This implementation will also help to define if a expression is valid or not.

An other possible upgrade is to add graduation on the axes, and an option to travel on the graph.

License

MIT

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