3D Hover Options in JavaScript

How to customize hover options for 3d charts.

New to Plotly?

Plotly is a free and open-source graphing library for JavaScript. We recommend you read our Getting Started guide for the latest installation or upgrade instructions, then move on to our Plotly Fundamentals tutorials or dive straight in to some Basic Charts tutorials.

Customize Hover for Spikelines

By default, Plotly's 3D plots display lines called "spikelines" while hovering over a point. These lines project from the hover point to each of the three axes' normal planes and then extend from those projection data points to the planes' wall boundaries.

function getrandom(num , mul) 
	{
	 var value = [ ];
	 for(i=0;i<=num;i++)
	 {
	  var rand = Math.random() * mul;
	  value.push(rand);
	 }
	 return value;
	}


var data=[
    {
     opacity:0.4,
     type: 'scatter3d',
     x: getrandom(50 , -75),
     y: getrandom(50 , -75),
     z: getrandom(50 , -75),
    },
];
var layout = {
  scene:{
    xaxis: {
		 spikecolor: '#1fe5bd',
		 spikesides: false,
		 spikethickness: 6
  	 	},
  	 yaxis: {
		 spikecolor: '#1fe5bd',
		 spikesides: false,
		 spikethickness: 6
  		},
  	 zaxis: {
		 spikecolor: '#1fe5bd',
		 spikethickness: 6
  		}
  },
};
Plotly.newPlot('myDiv', data, layout);

Customize Hover for Surface Contours

In addition to spikelines, Plotly 3D Surface plots also display surface contours on hover by default. These are customized by styling the contours attribute in the surface trace.

x = [10,20,30,40]
y = [0,1,2,3]
z = [
	[2,2,2,3],
	[1,1,1,1],
	[1,1,0,0],
	[0,0,0,0]
];

var data=[
    {
     opacity:0.9,
     type: 'surface',
     x:x, y:y, z:z,
	  contours: {
		 x: {
			 highlight: true,
			 highlightcolor: "#41a7b3"
         },
		 y: { highlight: false },
		 z: { highlight: false}
	}
    },
];
var layout = {
  scene:{
    xaxis: { showspikes: false },
    yaxis: { showspikes: false },
    zaxis: { showspikes: false }
  },
};
Plotly.newPlot('myDiv', data, layout);