Tree Map Template Google Drawings
Treemaps
- Overview
- Example
- Highlights
- Tooltips
- Loading
- Data Format
- Configuration Options
- Methods
- Events
- Data Policy
Overview
A visual representation of a data tree, where each node can have zero or more children, and one parent (except for the root, which has no parents). Each node is displayed as a rectangle, sized and colored according to values that you assign. Sizes and colors are valued relative to all other nodes in the graph. You can specify how many levels to display simultaneously, and optionally to display deeper levels in a hinted fashion. If a node is a leaf node, you can specify a size and color; if it is not a leaf, it will be displayed as a bounding box for leaf nodes. The default behavior is to move down the tree when a user left-clicks a node, and to move back up the tree when a user right-clicks the graph.
The total size of the graph is determined by the size of the containing element that you insert in your page. If you have leaf nodes with names too long to show, the name will be truncated with an ellipsis (...).
Example
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', {'packages':['treemap']}); google.charts.setOnLoadCallback(drawChart); function drawChart() { var data = google.visualization.arrayToDataTable([ ['Location', 'Parent', 'Market trade volume (size)', 'Market increase/decrease (color)'], ['Global', null, 0, 0], ['America', 'Global', 0, 0], ['Europe', 'Global', 0, 0], ['Asia', 'Global', 0, 0], ['Australia', 'Global', 0, 0], ['Africa', 'Global', 0, 0], ['Brazil', 'America', 11, 10], ['USA', 'America', 52, 31], ['Mexico', 'America', 24, 12], ['Canada', 'America', 16, -23], ['France', 'Europe', 42, -11], ['Germany', 'Europe', 31, -2], ['Sweden', 'Europe', 22, -13], ['Italy', 'Europe', 17, 4], ['UK', 'Europe', 21, -5], ['China', 'Asia', 36, 4], ['Japan', 'Asia', 20, -12], ['India', 'Asia', 40, 63], ['Laos', 'Asia', 4, 34], ['Mongolia', 'Asia', 1, -5], ['Israel', 'Asia', 12, 24], ['Iran', 'Asia', 18, 13], ['Pakistan', 'Asia', 11, -52], ['Egypt', 'Africa', 21, 0], ['S. Africa', 'Africa', 30, 43], ['Sudan', 'Africa', 12, 2], ['Congo', 'Africa', 10, 12], ['Zaire', 'Africa', 8, 10] ]); tree = new google.visualization.TreeMap(document.getElementById('chart_div')); tree.draw(data, { minColor: '#f00', midColor: '#ddd', maxColor: '#0d0', headerHeight: 15, fontColor: 'black', showScale: true }); } </script> </head> <body> <div id="chart_div" style="width: 900px; height: 500px;"></div> </body> </html> Highlights
You can specify whether elements should highlight, and set specific colors for certain elements to use when this occurs. To turn on highlighting, set highlightOnMouseOver:true (for v49 or before) or enableHighlight: true (for v50+). From there, you can set your colors to use for highlighting elements using the various HighlightColor options.
var options = { // For v49 or before highlightOnMouseOver: true, maxDepth: 1, maxPostDepth: 2, minHighlightColor: '#8c6bb1', midHighlightColor: '#9ebcda', maxHighlightColor: '#edf8fb', minColor: '#009688', midColor: '#f7f7f7', maxColor: '#ee8100', headerHeight: 15, showScale: true, height: 500, useWeightedAverageForAggregation: true }; var optionsV50 = { // For v50+ enableHighlight: true, maxDepth: 1, maxPostDepth: 2, minHighlightColor: '#8c6bb1', midHighlightColor: '#9ebcda', maxHighlightColor: '#edf8fb', minColor: '#009688', midColor: '#f7f7f7', maxColor: '#ee8100', headerHeight: 15, showScale: true, height: 500, useWeightedAverageForAggregation: true, // Use click to highlight and double-click to drill down. eventsConfig: { highlight: ['click'], unhighlight: ['mouseout'], rollup: ['contextmenu'], drilldown: ['dblclick'], } }; By default, treemap tooltips are basic, showing the label of the treemap cell. This is useful when the cells are too small to contain the labels, but you can customize them further as described in this section.
Treemap tooltips are customized differently than other charts: you define a function and then set the generateTooltip option to that function. Here's a simple example:
In the above chart, we define a function called showStaticTooltip that simply returns a string with the HTML to be shown whenever the user hovers over a treemap cell. Try it! The code to generate that is as follows:
var options = { minColor: '#e7711c', midColor: '#fff', maxColor: '#4374e0', showScale: true, generateTooltip: showStaticTooltip }; tree.draw(data, options); function showStaticTooltip(row, size, value) { return '<div style="background:#fd9; padding:10px; border-style:solid">' + 'Read more about the <a href="http://en.wikipedia.org/wiki/Kingdom_(biology)">kingdoms of life</a>.</div>'; } The generateTooltip function can be any JavaScript you like. Usually, you'll want tooltips that vary based on the data values. The following example shows how to access every field in the datatable.
If you hover over the cells in the above treemap, you'll see a different tooltip for each cell. The treemap tooltip functions all take three values: row, size, and value.
-
row: the cell's row from the datatable -
size: the sum of the value (column 3) of this cell and all its children -
value: the color of the cell, expressed as a number from 0 to 1
In showFullTooltip, the string we return is an HTML box with five lines:
- Line 1 shows the appropriate row from the datatable, making liberal use of
data.getValue. - Line 2 tells you which row that is, which is just the
rowparameter. - Line 3 gives you information from column 3 of the datatable: the sum of the value of column 3 from this row, plus the values from descendants.
- Line 4 gives you information from column 4 of the datatable. It's the value, but expressed as a number between 0 and 1 corresponding to the color of the cell.
var options = { minColor: '#e7711c', midColor: '#fff', maxColor: '#4374e0', showScale: true, generateTooltip: showFullTooltip }; tree.draw(data, options); function showFullTooltip(row, size, value) { return '<div style="background:#fd9; padding:10px; border-style:solid">' + '<span style="font-family:Courier"><b>' + data.getValue(row, 0) + '</b>, ' + data.getValue(row, 1) + ', ' + data.getValue(row, 2) + ', ' + data.getValue(row, 3) + '</span><br>' + 'Datatable row: ' + row + '<br>' + data.getColumnLabel(2) + ' (total value of this cell and its children): ' + size + '<br>' + data.getColumnLabel(3) + ': ' + value + ' </div>'; } } Loading
The google.charts.load package name is "treemap".
google.charts.load("current", {packages: ["treemap"]}); The visualization's class name is google.visualization.TreeMap.
var visualization = new google.visualization.TreeMap(container);
Data Format
Each row in the data table describes one node (a rectangle in the graph). Each node (except the root node) has one parent node. Each node is sized and colored according to its values relative to the other nodes currently shown.
The data table should have four columns in the following format:
- Column 0 - [string] An ID for this node. It can be any valid JavaScript string, including spaces, and any length that a string can hold. This value is displayed as the node header.
- Column 1 - [string] - The ID of the parent node. If this is a root node, leave this blank. Only one root is allowed per treemap.
- Column 2 - [number] - The size of the node. Any positive value is allowed. This value determines the size of the node, computed relative to all other nodes currently shown. For non-leaf nodes, this value is ignored and calculated from the size of all its children.
- Column 3 - [optional, number] - An optional value used to calculate a color for this node. Any value, positive or negative, is allowed. The color value is first recomputed on a scale from
minColorValuetomaxColorValue, and then the node is assigned a color from the gradient betweenminColorandmaxColor.
Configuration Options
| Name | |
|---|---|
| enableHighlight (for v50+) | Determines if elements should show highlighted effects. The default trigger is when moused over. The trigger can be configured with Type: boolean Default: false |
| eventsConfig (for v50+) | The event configuration to trigger tree map interactions. Format to configure interactions: eventsConfig: { interaction1: undefined, // or missing interaction2: [], // disable interaction3: [ 'mouse_event', 'optional_key1', 'optional_key2', 'optional_key3', 'optional_key4' ], ..., } If the config array is undefined or missing for an interaction, the default will be used. If the config is an empty array, the interaction will be disabled. For a valid config,
Example to use Control+Shift+Right_Click to go up the tree: { rollup: ['contextmenu', 'ctrlKey', 'shiftKey'] } Type: object Default: { highlight: ['mouseover'], unhighlight: ['mouseout'], rollup: ['contextmenu'], // right-click drilldown: ['click'] } |
| fontColor | The text color. Specify an HTML color value. Type: string Default: #ffffff |
| fontFamily | The font family to use for all text. Type: string Default: auto |
| fontSize | The font size for all text, in points. Type: number Default: 12 |
| forceIFrame | Draws the chart inside an inline frame. (Note that on IE8, this option is ignored; all IE8 charts are drawn in i-frames.) Type: boolean Default: false |
| headerColor | The color of the header section for each node. Specify an HTML color value. Type: string Default: #988f86 |
| headerHeight | The height of the header section for each node, in pixels (can be zero). Type number Default: 0 |
| headerHighlightColor | The color of the header of a node being hovered over. Specify an HTML color value or null; if null this value will be Type: string Default: null |
| highlightOnMouseOver (deprecated for v50+) | Deprecated for v50+. For v50 and later, please use Type: boolean Default: false |
| hintOpacity | When Type: number Default: 0.0 |
| maxColor | The color for a rectangle with a column 3 value of Type: string Default: #00dd00 |
| maxDepth | The maximum number of node levels to show in the current view. Levels will be flattened into the current plane. If your tree has more levels than this, you will have to go up or down to see them. You can additionally see Type: number Default: 1 |
| maxHighlightColor | The highlight color to use for the node with the largest value in column 3. Specify an HTML color value or null; If null, this value will be the value of Type: string Default: null |
| maxPostDepth | How many levels of nodes beyond Type: number Default: 0 |
| maxColorValue | The maximum value allowed in column 3. All values greater than this will be trimmed to this value. If set to null, it will be set to the max value in the column. Type: number Default: null |
| midColor | The color for a rectangle with a column 3 value midway between Type: string Default: #000000 |
| midHighlightColor | The highlight color to use for the node with a column 3 value near the median of Type: string Default: null |
| minColor | The color for a rectangle with the column 3 value of Type: string Default: #dd0000 |
| minHighlightColor | The highlight color to use for the node with a column 3 value nearest to Type: string Default: null |
| minColorValue | The minimum value allowed in column 3. All values less than this will be trimmed to this value. If set to null, it will be calculated as the minimum value in the column. Type: number Default: null |
| noColor | The color to use for a rectangle when a node has no value for column 3, and that node is a leaf (or contains only leaves). Specify an HTML color value. Type: string Default: #000000 |
| noHighlightColor | The color to use for a rectangle of "no" color when highlighted. Specify an HTML color value or null; if null, this will be the value of Type: string Default: null |
| showScale | Whether or not to show a color gradient scale from Type: boolean Default: false |
| showTooltips | Whether to show tooltips. Type: boolean Default: true |
| textStyle | An object that specifies the text style, for certain charts that have text in the content area such as the treemap. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> } The Type: object Default: |
| title | Text to display above the chart. Type: string Default: no title |
| titleTextStyle | An object that specifies the title text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> } The Type: object Default: |
| useWeightedAverageForAggregation | Whether to use weighted averages for aggregation. Type: boolean Default: false |
Methods
| Method | |
|---|---|
draw(data, options) | Draws the chart. Return Type: none |
getEventsConfig() (for v50+) | Returns the current interaction configuration. This can be used to verify the configuration option Return Type: Object { // An empty array (i.e. []) means the interaction is disabled. highlight: string[], unhighlight: string[], rollup: string[], drilldown: string[] } |
getSelection() | Standard Return Type: Array of selection elements |
setSelection() | Standard Return Type: none |
goUpAndDraw() | Move up the tree by one level and redraw it. Does not throw an error if the node is the root node. This is fired automatically when the user right-clicks a node. Return Type: none |
getMaxPossibleDepth() | Returns the maximum possible depth for the current view. Return Type: number |
clearChart() | Clears the chart, and releases all of its allocated resources. Return Type: none |
Events
Please refer to eventsConfig for configurable event triggers.
| Name | |
|---|---|
onmouseover | Fired when the user mouses over a node. The event handler is passed the row index of the corresponding entry in the data table. Properties: row |
highlight (for v50+) | Fired when the user highlights a node. The default trigger is mouseover. It can be configured with Properties: row |
onmouseout | Fired when the user mouses out of a node. The event handler is passed the row index of the corresponding entry in the data table. Properties: row |
unhighlight (for v50+) | Fired when the user unhighlights a node. The default trigger is mouseout. It can be configured with Properties: row |
ready | Fired when chart is ready for external method calls. If you want to interact with the chart, and call methods after you draw it, you should set up a listener for this event before you call the Properties: None |
rollup | Fired when the user navigates back up the tree. The default trigger is right-clicking. It can be configured with Properties: row |
select | Fired when the user drills down, or rolls up a node. Also fired when method Properties: none |
drilldown (for v50+) | Fired when the user navigates deeper into the tree. The default trigger is clicking. It can be configured with Properties: none |
Data Policy
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Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2021-05-03 UTC.
Tree Map Template Google Drawings
Source: https://developers.google.com/chart/interactive/docs/gallery/treemap