vis.js is a dynamic, browser-based visualization library
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<h1>Graph3d</h1>
<h2 id="Overview">Overview</h2>
<p>
Graph3d is an interactive visualization chart to draw data in a three dimensional
graph. You can freely move and zoom in the graph by dragging and scrolling in the
window. Graph3d also supports animation of a graph.
</p>
<p>
Graph3d uses <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Canvas">HTML canvas</a>
to render graphs, and can render up to a few thousands of data points smoothly.
</p>
<h2 id="Contents">Contents</h2>
<ul>
<li><a href="#Overview">Overview</a></li>
<li><a href="#Loading">Loading</a></li>
<li><a href="#Data_Format">Data Format</a></li>
<li><a href="#Configuration_Options">Configuration Options</a></li>
<li><a href="#Methods">Methods</a></li>
<li><a href="#Events">Events</a></li>
<li><a href="#Data_Policy">Data Policy</a></li>
</ul>
<h2 id="Example">Example</h2>
<p>
The following code shows how to create a Graph3d and provide it with data.
More examples can be found in the <a href="../examples">examples</a> directory.
</p>
<pre class="prettyprint lang-html">
&lt;!DOCTYPE HTML&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;Graph 3D demo&lt;/title&gt;
&lt;style&gt;
body {font: 10pt arial;}
&lt;/style&gt;
&lt;script type="text/javascript" src="../../dist/vis.js"&gt;&lt;/script&gt;
&lt;script type="text/javascript"&gt;
var data = null;
var graph = null;
function custom(x, y) {
return (Math.sin(x/50) * Math.cos(y/50) * 50 + 50);
}
// Called when the Visualization API is loaded.
function drawVisualization() {
// Create and populate a data table.
var data = new vis.DataSet();
// create some nice looking data with sin/cos
var steps = 50; // number of datapoints will be steps*steps
var axisMax = 314;
var axisStep = axisMax / steps;
for (var x = 0; x &lt; axisMax; x+=axisStep) {
for (var y = 0; y &lt; axisMax; y+=axisStep) {
var value = custom(x, y);
data.add({
x: x,
y: y,
z: value,
style: value
});
}
}
// specify options
var options = {
width: '600px',
height: '600px',
style: 'surface',
showPerspective: true,
showGrid: true,
showShadow: false,
keepAspectRatio: true,
verticalRatio: 0.5
};
// create a graph3d
var container = document.getElementById('mygraph');
graph3d = new vis.Graph3d(container, data, options);
}
&lt;/script&gt;
&lt;/head&gt;
&lt;body onload="drawVisualization();"&gt;
&lt;div id="mygraph"&gt;&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;
</pre>
<h2 id="Loading">Loading</h2>
<p>
The class name of the Graph3d is <code>vis.Graph3d</code>.
When constructing a Graph3d, an HTML DOM container must be provided to attach
the graph to. Optionally, data and options can be provided.
Data is a vis <code>DataSet</code> or an <code>Array</code>, described in
section <a href="#Data_Format">Data Format</a>.
Options is a name-value map in the JSON format. The available options
are described in section <a href="#Configuration_Options">Configuration Options</a>.
</p>
<pre class="prettyprint lang-js">var graph = new vis.Graph3d(container [, data] [, options]);</pre>
<p>
Data and options can be set or changed later on using the functions
<code>Graph3d.setData(data)</code> and <code>Graph3d.setOptions(options)</code>.
</p>
<h2 id="Data_Format">Data Format</h2>
<p>
Graph3d can load data from an <code>Array</code>, a <code>DataSet</code> (offering 2 way data binding), or a <code>DataView</code> (offering 1 way data binding).
JSON objects are added to this DataSet by using the <code>add()</code> function.
Data points must have properties <code>x</code>, <code>y</code>, and <code>z</code>,
and can optionally have a property <code>style</code> and <code>filter</code>.
<h3>Definition</h3>
<p>
The DataSet JSON objects are defined as:
</p>
<table class="properties">
<tr>
<th>Name</th>
<th>Type</th>
<th>Required</th>
<th>Description</th>
</tr>
<tr>
<td>x</td>
<td>number</td>
<td>yes</td>
<td>Location on the x-axis.</td>
</tr>
<tr>
<td>y</td>
<td>number</td>
<td>yes</td>
<td>Location on the y-axis.</td>
</tr>
<tr>
<td>z</td>
<td>number</td>
<td>yes</td>
<td>Location on the z-axis.</td>
</tr>
<tr>
<td>style</td>
<td>number</td>
<td>no</td>
<td>The data value, required for graph styles <code>dot-color</code> and
<code>dot-size</code>.
</td>
</tr>
<tr>
<td>filter</td>
<td>*</td>
<td>no</td>
<td>Filter values used for the animation.
This column may have any type, such as a number, string, or Date.</td>
</tr>
</table>
<h2 id="Configuration_Options">Configuration Options</h2>
<p>
Options can be used to customize the graph. Options are defined as a JSON object.
All options are optional.
</p>
<pre class="prettyprint lang-js">
var options = {
width: '100%',
height: '400px',
style: 'surface'
};
</pre>
<p>
The following options are available.
</p>
<table class="options">
<tr>
<th>Name</th>
<th>Type</th>
<th>Default</th>
<th>Description</th>
</tr>
<tr>
<td>animationInterval</td>
<td>number</td>
<td>1000</td>
<td>The animation interval in milliseconds. This determines how fast
the animation runs.</td>
</tr>
<tr>
<td>animationPreload</td>
<td>boolean</td>
<td>false</td>
<td>If false, the animation frames are loaded as soon as they are requested.
if <code>animationPreload</code> is true, the graph will automatically load
all frames in the background, resulting in a smoother animation as soon as
all frames are loaded. The load progress is shown on screen.</td>
</tr>
<tr>
<td>animationAutoStart</td>
<td>boolean</td>
<td>false</td>
<td>If true, the animation starts playing automatically after the graph
is created.</td>
</tr>
<tr>
<td>axisColor</td>
<td>string</td>
<td>'#4D4D4D'</td>
<td>The color of the axis lines and the text along the axis.</td>
</tr>
<tr>
<td>backgroundColor</td>
<td>string or Object</td>
<td>{fill:&nbsp;'white', stroke:&nbsp;'gray', strokeWidth:&nbsp;1}</td>
<td>The background color for the main area of the chart.
Can be either a simple HTML color string, for example: 'red' or '#00cc00',
or an object with the following properties.</td>
</tr>
<tr>
<td>backgroundColor.fill</td>
<td>string</td>
<td>'white'</td>
<td>The chart fill color, as an HTML color string.</td>
</tr>
<tr>
<td>backgroundColor.stroke</td>
<td>string</td>
<td>'gray'</td>
<td>The color of the chart border, as an HTML color string.</td>
</tr>
<tr>
<td>backgroundColor.strokeWidth</td>
<td>number</td>
<td>1</td>
<td>The border width, in pixels.</td>
</tr>
<tr>
<td>cameraPosition</td>
<td>Object</td>
<td>{horizontal:&nbsp;1.0, vertical:&nbsp;0.5, distance:&nbsp;1.7}</td>
<td>Set the initial rotation and position of the camera.
The object <code>cameraPosition</code> contains three parameters:
<code>horizontal</code>, <code>vertical</code>, and <code>distance</code>.
Parameter <code>horizontal</code> is a value in radians and can have any
value (but normally in the range of 0 and 2*Pi).
Parameter <code>vertical</code> is a value in radians between 0 and 0.5*Pi.
Parameter <code>distance</code> is the (normalized) distance from the
camera to the center of the graph, in the range of 0.71 to 5.0. A
larger distance puts the graph further away, making it smaller.
All parameters are optional.
</tr>
<tr>
<td>dataColor</td>
<td>string or object</td>
<td>{fill:&nbsp;'#7DC1FF', stroke:&nbsp;'#3267D2', strokeWidth:&nbsp;1}</td>
<td>When <code>dataColor</code> is a string, it will set the color for both border and fill color of dots and bars. Applicable for styles <code>dot-size</code>, <code>bar-size</code>, and <code>line</code>. When an object, it can contain the properties descibed below.</td>
</tr>
<tr>
<td>dataColor.fill</td>
<td>string</td>
<td>'#7DC1FF'</td>
<td>The fill color of the dots or bars. Applicable when using styles <code>dot-size</code>, <code>bar-size</code>, or <code>line</code>.</td>
</tr>
<tr>
<td>dataColor.stroke</td>
<td>string</td>
<td>'#3267D2'</td>
<td>The border color of the dots or bars. Applicable when using styles <code>dot-size</code> or <code>bar-size</code>.</td>
</tr>
<tr>
<td>dataColor.strokeWidth</td>
<td>number</td>
<td>1</td>
<td>The line width of dots, bars and lines. Applicable for all styles.</td>
</tr>
<tr>
<td>dotSizeRatio</td>
<td>number</td>
<td>0.02</td>
<td>Ratio of the size of the dots with respect to the width of the graph.</td>
</tr>
<tr>
<td>gridColor</td>
<td>string</td>
<td>'#D3D3D3'</td>
<td>The color of the grid lines.</td>
</tr>
<tr>
<td>height</td>
<td>string</td>
<td>'400px'</td>
<td>The height of the graph in pixels or as a percentage.</td>
</tr>
<tr>
<td>keepAspectRatio</td>
<td>boolean</td>
<td>true</td>
<td>If <code>keepAspectRatio</code> is true, the x-axis and the y-axis
keep their aspect ratio. If false, the axes are scaled such that they
both have the same, maximum with.</td>
</tr>
<tr>
<td>showAnimationControls</td>
<td>boolean</td>
<td>true</td>
<td>If true, animation controls are created at the bottom of the Graph.
The animation controls consists of buttons previous, start/stop, next,
and a slider showing the current frame.
Only applicable when the provided data contains an animation.</td>
</tr>
<tr>
<td>showGrid</td>
<td>boolean</td>
<td>true</td>
<td>If true, grid lines are drawn in the x-y surface (the bottom of the 3d
graph).</td>
</tr>
<tr>
<td>showXAxis</td>
<td>boolean</td>
<td>true</td>
<td>If true, X axis and X axis labels are drawn.</td>
</tr>
<tr>
<td>showYAxis</td>
<td>boolean</td>
<td>true</td>
<td>If true, Y axis and Y axis labels are drawn.</td>
</tr>
<tr>
<td>showZAxis</td>
<td>boolean</td>
<td>true</td>
<td>If true, Z axis and Z axis labels are drawn.</td>
</tr>
<tr>
<td>showPerspective</td>
<td>boolean</td>
<td>true</td>
<td>If true, the graph is drawn in perspective: points and lines which
are further away are drawn smaller.
Note that the graph currently does not support a gray colored bottom side
when drawn in perspective.
</td>
</tr>
<tr>
<td>showLegend</td>
<td>boolean</td>
<td>none</td>
<td>If true, a legend is drawn for the graph (if the graph type supports it).
By default a legend is drawn for dot and dot-color style graphs.
</td>
</tr>
<tr>
<td>showShadow</td>
<td>boolean</td>
<td>false</td>
<td>Show shadow on the graph.</td>
</tr>
<tr>
<td>style</td>
<td>string</td>
<td>'dot'</td>
<td>The style of the 3d graph. Available styles:
<code>bar</code>,
<code>bar-color</code>,
<code>bar-size</code>,
<code>dot</code>,
<code>dot-line</code>,
<code>dot-color</code>,
<code>dot-size</code>,
<code>line</code>,
<code>grid</code>,
or <code>surface</code></td>
</tr>
<tr>
<td>tooltip</td>
<td>boolean | function</td>
<td>false</td>
<td>Show a tooltip showing the values of the hovered data point.
The contents of the tooltip can be customized by providing a callback
function as <code>tooltip</code>. In this case the function is called
with an object containing parameters <code>x</code>,
<code>y</code>, <code>z</code>, and <code>data</code>
(the source JS object for the point) as an argument,
and must return a string which may contain HTML.
</td>
</tr>
<tr>
<td>tooltipStyle</td>
<td>Object</td>
<td>
<pre class="prettyprint lang-js">
{
content: {
padding: '10px',
border: '1px solid #4d4d4d',
color: '#1a1a1a',
background: 'rgba(255,255,255,0.7)',
borderRadius: '2px',
boxShadow: '5px 5px 10px rgba(128,128,128,0.5)'
},
line: {
height: '40px',
width: '0',
borderLeft: '1px solid #4d4d4d'
},
dot: {
height: '0',
width: '0',
border: '5px solid #4d4d4d',
borderRadius: '5px'
}
}</pre>
</td>
<td>Tooltip style properties.
Provided properties will be merged with the default object.
</td>
</tr>
<tr>
<td>valueMax</td>
<td>number</td>
<td>none</td>
<td>The maximum value for the value-axis. Only available in combination
with the styles <code>dot-color</code> and <code>dot-size</code>.</td>
</tr>
<tr>
<td>valueMin</td>
<td>number</td>
<td>none</td>
<td>The minimum value for the value-axis. Only available in combination
with the styles <code>dot-color</code> and <code>dot-size</code>.</td>
</tr>
<tr>
<td>verticalRatio</td>
<td>number</td>
<td>0.5</td>
<td>A value between 0.1 and 1.0. This scales the vertical size of the graph
When keepAspectRatio is set to false, and verticalRatio is set to 1.0,
the graph will be a cube.</td>
</tr>
<tr>
<td>width</td>
<td>string</td>
<td>'400px'</td>
<td>The width of the graph in pixels or as a percentage.</td>
</tr>
<tr>
<td>xBarWidth</td>
<td>number</td>
<td>none</td>
<td>The width of bars in x direction. By default, the width is equal to the smallest distance
between the data points.
Only applicable for styles <code>'bar'</code> and <code>'bar-color'</code>.</td>
</tr>
<tr>
<td>xCenter</td>
<td>string</td>
<td>'55%'</td>
<td>The horizontal center position of the graph, as a percentage or in
pixels.</td>
</tr>
<tr>
<td>xMax</td>
<td>number</td>
<td>from data</td>
<td>The maximum value for the x-axis.
If not set, the largest value for x in the data set is used.
</td>
</tr>
<tr>
<td>xMin</td>
<td>number</td>
<td>from data</td>
<td>The minimum value for the x-axis.
If not set, the smallest value for x in the data set is used.
</td>
</tr>
<tr>
<td>xStep</td>
<td>number</td>
<td>none</td>
<td>Step size for the grid on the x-axis.</td>
</tr>
<tr>
<td>xValueLabel</td>
<td>function</td>
<td>none</td>
<td>A function for custom formatting of the labels along the x-axis,
for example <code>function (x) {return (x * 100) + '%'}</code>.
</td>
</tr>
<tr>
<td>yBarWidth</td>
<td>number</td>
<td>none</td>
<td>The width of bars in y direction. By default, the width is equal to the smallest distance
between the data points.
Only applicable for styles <code>'bar'</code> and <code>'bar-color'</code>.</td>
</tr>
<tr>
<td>yCenter</td>
<td>string</td>
<td>'45%'</td>
<td>The vertical center position of the graph, as a percentage or in
pixels.</td>
</tr>
<tr>
<td>yMax</td>
<td>number</td>
<td>from data</td>
<td>The maximum value for the y-axis.
If not set, the largest value for y in the data set is used.
</td>
</tr>
<tr>
<td>yMin</td>
<td>number</td>
<td>from data</td>
<td>The minimum value for the y-axis.
If not set, the smallest value for y in the data set is used.
</td>
</tr>
<tr>
<td>yStep</td>
<td>number</td>
<td>none</td>
<td>Step size for the grid on the y-axis.</td>
</tr>
<tr>
<td>yValueLabel</td>
<td>function</td>
<td>none</td>
<td>A function for custom formatting of the labels along the y-axis,
for example <code>function (y) {return (y * 100) + '%'}</code>.
</td>
</tr>
<tr>
<td>zMax</td>
<td>number</td>
<td>from data</td>
<td>The maximum value for the z-axis.
If not set, the largest value for z in the data set is used.
</td>
</tr>
<tr>
<td>zMin</td>
<td>number</td>
<td>from data</td>
<td>The minimum value for the z-axis.
If not set, the smallest value for z in the data set is used.
</td>
</tr>
<tr>
<td>zStep</td>
<td>number</td>
<td>none</td>
<td>Step size for the grid on the z-axis.</td>
</tr>
<tr>
<td>zValueLabel</td>
<td>function</td>
<td>none</td>
<td>A function for custom formatting of the labels along the z-axis,
for example <code>function (z) {return (z * 100) + '%'}</code>.
</td>
</tr>
<tr>
<td>xLabel</td>
<td>String</td>
<td>x</td>
<td>Label on the X axis.</td>
</tr>
<tr>
<td>yLabel</td>
<td>String</td>
<td>y</td>
<td>Label on the Y axis.</td>
</tr>
<tr>
<td>zLabel</td>
<td>String</td>
<td>z</td>
<td>Label on the Z axis.</td>
</tr>
<tr>
<td>filterLabel</td>
<td>String</td>
<td>time</td>
<td>Label for the filter column.</td>
</tr>
<tr>
<td>legendLabel</td>
<td>String</td>
<td>value</td>
<td>Label for the style description.</td>
</tr>
</table>
<h2 id="Methods">Methods</h2>
<p>
Graph3d supports the following methods.
</p>
<table class="methods">
<tr>
<th>Method</th>
<th>Return Type</th>
<th>Description</th>
</tr>
<tr>
<td>animationStart()</td>
<td>none</td>
<td>Start playing the animation.
Only applicable when animation data is available.</td>
</tr>
<tr>
<td>animationStop()</td>
<td>none</td>
<td>Stop playing the animation.
Only applicable when animation data is available.</td>
</tr>
<tr>
<td>getCameraPosition()</td>
<td>An object with parameters <code>horizontal</code>,
<code>vertical</code> and <code>distance</code></td>
<td>Returns an object with parameters <code>horizontal</code>,
<code>vertical</code> and <code>distance</code>,
which each one of them is a number, representing the rotation and position
of the camera.</td>
</tr>
<tr>
<td>redraw()</td>
<td>none</td>
<td>Redraw the graph. Useful after the camera position is changed externally,
when data is changed, or when the layout of the webpage changed.</td>
</tr>
<tr>
<td>setData(data)</td>
<td>none</td>
<td>Replace the data in the Graph3d.</td>
</tr>
<tr>
<td>setOptions(options)</td>
<td>none</td>
<td>Update options of Graph3d.
The provided options will be merged with current options.</td>
</tr>
<tr>
<td>setSize(width, height)</td>
<td>none</td>
<td>Parameters <code>width</code> and <code>height</code> are strings,
containing a new size for the graph. Size can be provided in pixels
or in percentages.</td>
</tr>
<tr>
<td>setCameraPosition (pos)</td>
<td>{horizontal:&nbsp;1.0, vertical:&nbsp;0.5, distance:&nbsp;1.7}</td>
<td>Set the rotation and position of the camera. Parameter <code>pos</code>
is an object which contains three parameters: <code>horizontal</code>,
<code>vertical</code>, and <code>distance</code>.
Parameter <code>horizontal</code> is a value in radians and can have any
value (but normally in the range of 0 and 2*Pi).
Parameter <code>vertical</code> is a value in radians between 0 and 0.5*Pi.
Parameter <code>distance</code> is the (normalized) distance from the
camera to the center of the graph, in the range of 0.71 to 5.0. A
larger distance puts the graph further away, making it smaller.
All parameters are optional.
</td>
</tr>
</table>
<h2 id="Events">Events</h2>
<p>
Graph3d fires events after the camera position has been changed.
The event can be catched by creating a listener.
Here an example on how to catch a <code>cameraPositionChange</code> event.
</p>
<pre class="prettyprint lang-js">
function onCameraPositionChange(event) {
alert('The camera position changed to:\n' +
'Horizontal: ' + event.horizontal + '\n' +
'Vertical: ' + event.vertical + '\n' +
'Distance: ' + event.distance);
}
// assuming var graph3d = new vis.Graph3d(document.getElementById('mygraph'));
graph3d.on('cameraPositionChange', onCameraPositionChange);
</pre>
<p>
The following events are available.
</p>
<table class="events">
<tr>
<th>name</th>
<th>Properties</th>
<th>Description</th>
</tr>
<tr>
<td>cameraPositionChange</td>
<td>
<ul>
<li><code>horizontal</code>: Number. The horizontal angle of the camera.</li>
<li><code>vertical</code>: Number. The vertical angle of the camera.</li>
<li><code>distance</code>: Number. The distance of the camera to the center of the graph.</li>
</ul>
</td>
<td>The camera position changed. Fired after the user modified the camera position
by moving (dragging) the graph, or by zooming (scrolling),
but not after a call to <code>setCameraPosition</code> method.
The new camera position can be retrieved by calling the method
<code>getCameraPosition</code>.</td>
</tr>
</table>
<h2 id="Data_Policy">Data Policy</h2>
<p>
All code and data are processed and rendered in the browser. No data is sent to any server.
</p>
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