Package Exports

cli-graph

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (cli-graph) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

CLI Graph

Easily draw function graphs via NodeJS in Terminal.

Installation

$ npm install cli-graph

Example

// Dependencies
var CliGraph = require("../lib");

// Create a new function graph
var g1 = new CliGraph({
    height: 20
  , width: 20
  , center: { y: 18 }
}).setFunction(function (x) {
    return x * x / 5;
});
console.log(g1.toString());

// Another function
var g2 = new CliGraph({
    height: 30
  , width: 30
  , marks: {
        hAxis: '-'
      , vAxis: '|'
      , center: '+'
      , point: '.'
  }
});

g2.setFunction(function (x) {
    return x;
});

console.log(g2.toString());

Running the script above we get the following output:

                    ▲
                    │
  •                 │                 •
                    │
                    │
                    │
    •               │               •
                    │
                    │
      •             │             •
                    │
        •           │           •
                    │
          •         │         •
                    │
            •       │       •
                    │
              •     │     •
────────────────•─•─•─•─•──────────────▶
                    │

                              ▲
                              |                           .
                              |                         .
                              |                       .
                              |                     .
                              |                   .
                              |                 .
                              |               .
                              |             .
                              |           .
                              |         .
                              |       .
                              |     .
                              |   .
                              | .
------------------------------.----------------------------▶
                            . |
                          .   |
                        .     |
                      .       |
                    .         |
                  .           |
                .             |
              .               |
            .                 |
          .                   |
        .                     |
      .                       |
    .                         |
  .                           |

Documentation

`new CliGraph(options)`

Creates a new CliGraph instance.

Example:

var g = new CliGraph();

Params

Object options: An object containing the following fields:
height (Number): The graph height (default: 40).
width (Number): The graph width (default: 60).
center (Object): An object containing:
- x (Number): The x origin (default: width / 2)
- y (Number): The y origin (default: height / 2)
marks (Object): An object containing:
- hAxis (String): The character for drawing horizontal axis (default "─").
- vAxis (String): The character for drawing vertical axis (default "│").
- center (String): The character for axis intersection (default "┼").
- point (String): The character for drawing points (default "•").
- rightArrow (String): The character for drawing the right arrow (default "▶").
- topArrow (String): The character for drawing the top arrow (default "▲").
- background (String): The background character (default " ").

Return

CliGraph The CliGraph instance.

`addPoint(x, y)`

Adds a point on the x and y coordinates.

Params

Number x: The x coordinate.
Number y: The y coordinate.

Return

CliGraph The CliGraph instance.

`toString()`

Stringifies the graph.

Return

String The stringified graph.

`setFunction(foo, min, max)`

Adds the function on the graph.

Params

Function foo: A function that receives x as the first parameter and returns the y value.
Number min: The minimum x (default: the lowest possible value).
Number max: The maximum x.(default: the highest possible value).

Return

CliGraph The CliGraph instance.

How to contribute

File an issue in the repository, using the bug tracker, describing the contribution you'd like to make. This will help us to get you started on the right foot.
Fork the project in your account and create a new branch: your-great-feature.
Commit your changes in that branch.
Open a pull request, and reference the initial issue in the pull request message.

License

See the LICENSE file.