Plotly.js
Plotly.js is a charting library that comes with over 40 chart types, 3D charts, statistical graphs, and SVG maps.
Scatter Plots
Source Code
var xArray = [50,60,70,80,90,100,110,120,130,140,150];
var yArray = [7,8,8,9,9,9,10,11,14,14,15];
// Define Data
var data = [{
x: xArray,
y: yArray,
mode:"markers",
type:"scatter"
}];
// Define Layout
var layout = {
xaxis: {range: [40, 160], title: "Square Meters"},
yaxis: {range: [5, 16], title: "Price in Millions"},
title: "House Prices vs. Size"
};
Plotly.newPlot("myPlot", data, layout);
Line Graphs
Source Code
var xArray = [50,60,70,80,90,100,110,120,130,140,150];
var yArray = [7,8,8,9,9,9,10,11,14,14,15];
// Define Data
var data = [{
x: xArray,
y: yArray,
mode: "lines",
type: "scatter"
}];
// Define Layout
var layout = {
xaxis: {range: [40, 160], title: "Square Meters"},
yaxis: {range: [5, 16], title: "Price in Millions"},
title: "House Prices vs Size"
};
// Display using Plotly
Plotly.newPlot("myPlot", data, layout);
Linear Graphs
Source Code
var exp = "x + 17";
// Generate values
var xValues = [];
var yValues = [];
for (var x = 0; x <= 10; x += 1) {
yValues.push(eval(exp));
xValues.push(x);
}
// Define Data
var data = [{
x: xValues,
y: yValues,
mode: "lines"
}];
// Define Layout
var layout = {title: "y = " + exp};
// Display using Plotly
Plotly.newPlot("myPlot", data, layout);
Multiple Lines
Source Code
var exp1 = "x";
var exp2 = "1.5*x";
var exp3 = "1.5*x + 7";
// Generate values
var x1Values = [];
var x2Values = [];
var x3Values = [];
var y1Values = [];
var y2Values = [];
var y3Values = [];
for (var x = 0; x <= 10; x += 1) {
x1Values.push(x);
x2Values.push(x);
x3Values.push(x);
y1Values.push(eval(exp1));
y2Values.push(eval(exp2));
y3Values.push(eval(exp3));
}
// Define Data
var data = [
{x: x1Values, y: y1Values, mode:"lines"},
{x: x2Values, y: y2Values, mode:"lines"},
{x: x3Values, y: y3Values, mode:"lines"}
];
// Define Layout
var layout = {title: "[y=" + exp1 + "] [y=" + exp2 + "] [y=" + exp3 + "]"};
// Display using Plotly
Plotly.newPlot("myPlot", data, layout);
Bar Charts
Source Code
var xArray = ["Italy","France","Spain","USA","Argentina"];
var yArray = [55, 49, 44, 24, 15];
var data = [{
x: xArray,
y: yArray,
type: "bar"
}];
var layout = {title:"World Wide Wine Production"};
Plotly.newPlot("myPlot", data, layout);
Horizontal Bar Charts
Source Code
var xArray = [55, 49, 44, 24, 15];
var yArray = ["Italy","France","Spain","USA","Argentina"];
var data = [{
x: xArray,
y: yArray,
type: "bar",
orientation: "h"
}];
var layout = {title:"World Wide Wine Production"};
Plotly.newPlot("myPlot", data, layout);
Pie Charts
To display a pie instead of bars, change x and y to labels and values, and change the type to "pie":
var data = [{
labels: xArray,
values: yArray,
type: "pie"
}];
Donut Charts
To display a donut instead of a pie, add a hole:
var data = [{
labels: xArray,
values: yArray,
hole: .4,
type: "pie"
}];
Plotting Equations
Source Code
let exp = "Math.sin(x)";
// Generate values
const xValues = [];
const yValues = [];
for (let x = 0; x <= 10; x += 0.1) {
yValues.push(eval(exp));
xValues.push(x);
}
// Display using Plotly
const data = [{x:xValues, y:yValues, mode:"lines"}];
const layout = {title: "y = " + exp};
Plotly.newPlot("myPlot", data, layout);
