asciiplot

Console ASCII line charts in pure Javascript (for NodeJS) with no dependencies (clone of asciichart). This code is absolutely free for any usage, you just do whatever you want.

Usage

$3

``sh
npm install asciiplot
`

`javascript
var asciiplot = require ('asciiplot')
var s0 = new Array (120)
for (var i = 0; i < s0.length; i++)
s0[i] = 15 Math.sin (i ((Math.PI * 4) / s0.length))
console.log (asciiplot.plot (s0))
`

$3

The width of the chart will always equal the length of data series. The height and range are determined automatically.

`javascript
var s0 = new Array (120)
for (var i = 0; i < s0.length; i++)
s0[i] = 15 Math.sin (i ((Math.PI * 4) / s0.length))
console.log (asciiplot.plot (s0))
`

The output can be configured by passing a second parameter to the plot (series, config) function. The following options are supported:
`javascript
var config = {

offset: 3, // axis offset from the left (min 2)
padding: ' ', // padding string for label formatting (can be overrided)
height: 10, // any height you want

// the label format function applies default padding
format: function (x, i) { return (padding + x.toFixed (2)).slice (-padding.length) }
}
`

$3

`javascript
var s = []
for (var i = 0; i < 120; i++)
s[i] = 15 Math.cos (i ((Math.PI * 8) / 120)) // values range from -15 to +15
console.log (asciiplot.plot (s, { height: 6 })) // this rescales the graph to ±3 lines
`

$3

`javascript
var s2 = new Array (120)
s2[0] = Math.round (Math.random () * 15)
for (i = 1; i < s2.length; i++)
s2[i] = s2[i - 1] + Math.round (Math.random () * (Math.random () > 0.5 ? 2 : -2))
console.log (asciiplot.plot (s2))
``