jpbberry / vegaexp

Make graphing equations into real graphs with vega!

vegaEXP

vega expressions is a super simple way to turn graph equations into lines for vega!!

vega expressions was made for the original use of my discord bot but later decided to be posted :D

Simple setup

const vegaEXP = require('vegaexp');
new vegaEXP('2x+3').then((canvas) =>{ // Put the equation in here, this is also a promise that returns the canvas vega usually gives ya! :p
    // If you want to interact with the canvas as usual you can here!
    //Do what you want with this, in this example I'm just going to write the file
    fs.writeFileSync('./coolimage.png', canvas.toBuffer()) // Just look up Canvas documentation if you want to use these properly!
})

And now we have a picture!

./coolimage.png:

Exponent support is here, and we have many more plans like:

1. Absolute Value
2. Optimized graph visualization
3. Better customizability

Customizing

At the moment customizing isn't very easy! But definitely planned!! If you want to customize the look of your graph you can either:

1. Edit ./node_modules/vegaexp/base-template.json
2. When making a new vegaEXP you can do vegaEXP(EXP, {file: YOUR_OWN_FILE.json}) (Full path). More customization will come soon but for no you need to learn the way vega customizes their visualization in JSON

Links

NPM Package

GitHub

Discord (For Support)