# Python-3D-Function-Plot-Demo

**Repository Path**: christopher-vi/Python-3D-Function-Plot-Demo

## Basic Information

- **Project Name**: Python-3D-Function-Plot-Demo
- **Description**: 3D Function Graphing
Easy to use
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 4
- **Forks**: 0
- **Created**: 2021-09-09
- **Last Updated**: 2023-01-05

## Categories & Tags

**Categories**: Uncategorized

**Tags**: Python, 3D-Graphing

## README

# Function Graphing Demo
> Christopher 
* Based on Python
* Easy to use
## USAGE
* Python Version: "3.7"
* `pip install -r requirememts.txt` to install dependency.
* Key in the function f(x, y) to form a function z=f(x, y), then Press enter.
* End the programme by pressing "Ctrl + c".
* To save the figure or Editing axis or so, edit the source code directly.
## Ideas
The inital idea came from Vicky, who once asked me How it looks like the function "z=y^2/x".

Well, I hadn't had much memory about that since I'd already finished my Calculus Classes. So, I relied her with this Programme.

## Intuitions
Look at the function z = y^2 / x and think about other possible functions we might need in the future. It can be hard to pre-set all kinds of functions (or combinations of x, y and z). So, here I came up with the idea of viewing the function as z equals to a 2-variable-function f(x,y), meaning that by calculating all z value deciding by a set (x, y), we get the proximate graph of the function. 

To deal with the function f(x,y), we think of it as an expressions. Then, by using the regular expression method, we are able to cut the expression into tokens, each representing a number, an operator or variables (x or y).

Till now, a last problem ahead is to process it much faster and easier. This is when it suddenly occurs to me that Numpy, a tool for matrix processing is perfect for it. 

Coding while checking the reference doc, it took me half day to complete this half-finished-but-useful-python-based-3D-function-Graphing tool.

Hope you enjoy.

## SAMPLE

### sample 1
$$
z=x^2+y^2
$$

!['z=x^2+y^2'](img/Screenshot%20from%202021-09-11%2000-31-37.png)

### sample 2
$$
z=x^2
$$
!['z=x^2'](img/Screenshot%20from%202021-09-11%2000-31-22.png)

### sample 3

$$
z=x
$$

!['z=x'](img/Screenshot%20from%202021-09-11%2000-31-07.png)