https://github.com/mrfarhadir/equationjs
line equations methods
https://github.com/mrfarhadir/equationjs
algebra equation line
Last synced: 6 months ago
JSON representation
line equations methods
- Host: GitHub
- URL: https://github.com/mrfarhadir/equationjs
- Owner: mrfarhadir
- Created: 2019-03-28T06:19:35.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2019-04-16T05:12:22.000Z (over 6 years ago)
- Last Synced: 2025-03-08T23:18:18.609Z (7 months ago)
- Topics: algebra, equation, line
- Language: JavaScript
- Size: 73.2 KB
- Stars: 2
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Equation
Package includes equations of:
[Line](#line)
### Installation:
```
npm install equationjs --save
```
### Test:
```
npm run test
```
# Line
$$
y=mx+b
$$
#### Methods:
- **`crossTwoPoint`**
> This method creates line equation which is crossing from two point that is given as two parameter for function.
**Example:**
```javascript
let Line = require('equationjs').Line
let line = new Line()
let A = {x: 0, y: 0}
let B = {x: 2, y: 2}
let y = line.crossTwoPoint(A, B)
console.log(line) // Line { m: 3, b: -2 }
console.log(y(5)) // 5
```
- **`distanceFromPoint`**
> This method calculates created line distance from a given point.
> this function also has a static version that takes point, m and b
**Example:**
```javascript
//we could created line in different methods
//here we create line from two point and then calculate line distance from point C
let Line = require('equationjs').Line
let line = new Line()
let A = {x: 0, y: 0}
let B = {x: 2, y: 2}
let C = {x: 16, y: 4}
line.crossTwoPoint(A, B)
let d = line.distanceFromPoint(C)
console.log(d) // 6
```
**Example:**
```javascript
//here we create line from with known m and b and then calculate line distance from point C
let Line = require('equationjs').Line
let line = new Line()
line.create(1, 0)
let C = {x: 16, y: 4}
let d = line.distanceFromPoint(C)
console.log(d) // 6
```
- **`angle`**
```static method```
> This method takes two created instance of line class and returns angle between them in degree
**Example:**
```javascript
let Line = require('equationjs').Line
let line1 = new Line()
line1.create(1, 0)
let line2 = new Line()
line2.create(-1, 0)
let t = Line.angle(line1, line2)
console.log(t) //90
```
- **`twoLineDistance`**
```static method```
> This method takes two created instance of line class and returns distance between them
**Example:**
```javascript
let Line = require('equationjs').Line
let line1 = new Line()
line1.create(4, -3)
let line2 = new Line()
line2.create(4, 10)
let d = Line.twoLineDistance(line1, line2)
console.log(d) //4.913538149119954
```
- **`neighbors`**
> This method takes array of points around line and calculates their distance from line and average of all neighbors
**Example:**
```javascript
let Line = require('equationjs').Line
let line = new Line()
line.create(4, -3)
let points = [
{x: 1, y: 3},
{x: 4, y: -2},
{x: -3, y: 0},
{x: 3, y: 1},
{x: 6, y: 6},
]
let result = line.neighboors(points)
console.log(result)
/*
{
list:[
-0.7559289460184544,
5.669467095138408,
-5.669467095138408,
3.0237157840738176,
5.669467095138408
],
sum: 7.937253933193771,
average: 1.5874507866387542
}
*/
```
### road map for classes:
- [x] Line
- [ ] Quadratic
- [ ] Polynomial
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