Easily draw function graphs via NodeJS in Terminal.
npm install function-graphASCII Function Graphs
=====================
Easily draw function graphs via NodeJS in Terminal.
options is an object containing the following fields:
- height: the height of the graph (default: 40)
- width: the width of the graph (default: 60)
- center an object containing:
- x: the x origin (default: width / 2)
- y: the y origin (default: height / 2)
- marks an object containing:
- hAxis: the character for drawing horizontal axis (default '-')
- vAxis: the character for drawing vertical axis (default '|')
- center: the character for axis intersection (default '+')
- point: the character for drawing points (default '#')
x and y are the coordinates of the new point that will be added
Returns the stringified graph.
js
// dependencies
var FunctionGraph = require("function-graph");/**
* We will print the graph for this function.
*
*/
function foo (x) {
return Math.sin(x);
}
// create a new function graph
var graph = new FunctionGraph ({
height: 30
, width: 60
, marks: {
hAxis: '─'
, vAxis: '│'
, center: '┼'
, point: '•'
}
});
// for -25, 48) add points
for (var i = -25; i < 48; i += 0.001) {
graph.addPoint(i 2, 5 foo(i));
}
console.log("Below you will see the sinus graph:")
// output graph
console.log(graph.toString());
`How to test
sh
$ npm install function-graph
$ cd node_modules/function-graph
$ npm test> function-graph@0.1.0 test /home/.../function-graph
> node test/1.js
Below you will see the sinus graph:
^
│
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•••• ••• │•••• ••• ••••
• • •• •• │• • •• •• • •
•• •• • • •• •• • •• ••
• • •• •• • • •• • •
─────••────••─────•─────••────•────••─────•─────••────••───>
• • • •• • • •• •• • •
• •• •• • •• •• • • •• ••
•• • •• •• • •│ •• •• • •
•••• ••• ••••│ ••• ••••
│
│
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│
`Changelog
-
- better example
- added comments -
- Added
setting ([#4) -
0.1.0`Initial release