Overview
Google bar charts are rendered in the browser using SVG or VML, whichever is appropriate for the user's browser. Like all Google charts, bar charts display tooltips when the user hovers over the data. For a vertical version of this chart, see the column chart.
Examples
Coloring bars
Let's chart the densities of four precious metals:
Above, all colors are the default blue. That's because they're all part of the same series; if there were a second series, that would have been colored red. We can customize these colors with the style role:
There are three different ways to choose the colors, and our data table showcases them all: RGB values, English color names, and a CSS-like declaration:
var data = google.visualization.arrayToDataTable([ ['Element', 'Density', { role: 'style' }], ['Copper', 8.94, '#b87333'], // RGB value ['Silver', 10.49, 'silver'], // English color name ['Gold', 19.30, 'gold'], ['Platinum', 21.45, 'color: #e5e4e2' ], // CSS-style declaration ]);
Bar styles
The style role lets you control several aspects of bar appearance with CSS-like declarations:
color
opacity
fill-color
fill-opacity
stroke-color
stroke-opacity
stroke-width
We don't recommend that you mix styles too freely inside a chart—pick a style and stick with it—but to demonstrate all the style attributes, here's a sampler:
The first two bars each use a specific color
(the
first with an English name, the second with an RGB
value). No opacity
was chosen, so the default of 1.0
(fully opaque) is used; that's why the second bar obscures the
gridline behind it. In the third bar, an opacity
of 0.2
is used, revealing the gridline. In the fourth bar, three style
attributes are used: stroke-color
and stroke-width
to draw the border,
and fill-color
to specify the color of the rectangle
inside. The rightmost bar additionally
uses stroke-opacity
and fill-opacity
to
choose opacities for the border and fill:
function drawChart() { var data = google.visualization.arrayToDataTable([ ['Year', 'Visitations', { role: 'style' } ], ['2010', 10, 'color: gray'], ['2020', 14, 'color: #76A7FA'], ['2030', 16, 'opacity: 0.2'], ['2040', 22, 'stroke-color: #703593; stroke-width: 4; fill-color: #C5A5CF'], ['2050', 28, 'stroke-color: #871B47; stroke-opacity: 0.6; stroke-width: 8; fill-color: #BC5679; fill-opacity: 0.2'] ]);
Labeling bars
Charts have several kinds of labels, such as tick labels, legend labels, and labels in the tooltips. In this section, we'll see how to put labels inside (or near) the bars in a bar chart.
Let's say we wanted to annotate each bar with the appropriate chemical symbol. We can do that with the annotation role:
In our data table, we define a new column with { role:
'annotation' }
to hold our bar labels:
var data = google.visualization.arrayToDataTable([ ['Element', 'Density', { role: 'style' }, { role: 'annotation' } ], ['Copper', 8.94, '#b87333', 'Cu' ], ['Silver', 10.49, 'silver', 'Ag' ], ['Gold', 19.30, 'gold', 'Au' ], ['Platinum', 21.45, 'color: #e5e4e2', 'Pt' ] ]);
While users can hover over the bars to see the data values, you might want to include them on the bars themselves:
This is a little more complicated than it should be, because we
create a DataView
to specify the annotation for each
bar.
<script type="text/javascript"> google.charts.load("current", {packages:["corechart"]}); google.charts.setOnLoadCallback(drawChart); function drawChart() { var data = google.visualization.arrayToDataTable([ ["Element", "Density", { role: "style" } ], ["Copper", 8.94, "#b87333"], ["Silver", 10.49, "silver"], ["Gold", 19.30, "gold"], ["Platinum", 21.45, "color: #e5e4e2"] ]); var view = new google.visualization.DataView(data); view.setColumns([0, 1, { calc: "stringify", sourceColumn: 1, type: "string", role: "annotation" }, 2]); var options = { title: "Density of Precious Metals, in g/cm^3", width: 600, height: 400, bar: {groupWidth: "95%"}, legend: { position: "none" }, }; var chart = new google.visualization.BarChart(document.getElementById("barchart_values")); chart.draw(view, options); } </script> <div id="barchart_values" style="width: 900px; height: 300px;"></div>
If we wanted to format the value differently, we could define a formatter and wrap it in a function like this:
function getValueAt(column, dataTable, row) { return dataTable.getFormattedValue(row, column); }
Then we could call it with calc: getValueAt.bind(undefined, 1)
.
If the label is too big to fit entirely inside the bar, it's displayed outside:
Stacked bar charts
A stacked bar chart is a bar chart that places related values atop one another. If there are any negative values, they are stacked in reverse order below the chart's axis baseline. Stacked bar charts are typically used when a category naturally divides into components. For instance, consider some hypothetical book sales, divided by genre and compared across time:
You create a stacked bar chart by setting
the isStacked
option to true
:
var data = google.visualization.arrayToDataTable([ ['Genre', 'Fantasy & Sci Fi', 'Romance', 'Mystery/Crime', 'General', 'Western', 'Literature', { role: 'annotation' } ], ['2010', 10, 24, 20, 32, 18, 5, ''], ['2020', 16, 22, 23, 30, 16, 9, ''], ['2030', 28, 19, 29, 30, 12, 13, ''] ]); var options = { width: 600, height: 400, legend: { position: 'top', maxLines: 3 }, bar: { groupWidth: '75%' }, isStacked: true };
Stacked bar charts also support 100% stacking, where the stacks of elements at each
domain-value are rescaled such that they add up to 100%. The options for this are
isStacked: 'percent'
, which formats each value as a percentage of 100%, and
isStacked: 'relative'
, which formats each value as a fraction of 1. There is also
an isStacked: 'absolute'
option, which is functionally equivalent to
isStacked: true
.
Note in the 100% stacked chart on the right, the tick values are based on the relative
0-1 scale as fractions of 1, but the axis values are displayed as percentages. This is because
the percentage axis ticks are the result of applying a format of "#.##%" to the relative 0-1 scale
values. When using isStacked: 'percent'
, be sure to specify any ticks using the
relative 0-1 scale.
var options_stacked = { isStacked: true, height: 300, legend: {position: 'top', maxLines: 3}, hAxis: {minValue: 0} };
var options_fullStacked = { isStacked: 'percent', height: 300, legend: {position: 'top', maxLines: 3}, hAxis: { minValue: 0, ticks: [0, .3, .6, .9, 1] } };
Creating Material bar charts
In 2014, Google announced guidelines intended to support a common look and feel across its properties and apps (such as Android apps) that run on Google platforms. We call this effort Material Design. We'll be providing "Material" versions of all our core charts; you're welcome to use them if you like how they look.
Creating a Material Bar Chart is similar to creating what we'll now
call a "Classic" Bar Chart. You load the Google Visualization API
(although with the 'bar'
package instead of
the 'corechart'
package), define your datatable, and then
create an object (but of class google.charts.Bar
instead
of google.visualization.BarChart
).
Note: Material Charts will not work in old versions of Internet Explorer. (IE8 and earlier versions don't support SVG, which Material Charts require.)
Material Bar Charts have many small improvements over Classic Bar Charts, including an improved color palette, rounded corners, clearer label formatting, tighter default spacing between series, softer gridlines and titles (and the addition of subtitles).
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', {'packages':['bar']}); google.charts.setOnLoadCallback(drawChart); function drawChart() { var data = google.visualization.arrayToDataTable([ ['Year', 'Sales', 'Expenses', 'Profit'], ['2014', 1000, 400, 200], ['2015', 1170, 460, 250], ['2016', 660, 1120, 300], ['2017', 1030, 540, 350] ]); var options = { chart: { title: 'Company Performance', subtitle: 'Sales, Expenses, and Profit: 2014-2017', }, bars: 'horizontal' // Required for Material Bar Charts. }; var chart = new google.charts.Bar(document.getElementById('barchart_material')); chart.draw(data, google.charts.Bar.convertOptions(options)); } </script> </head> <body> <div id="barchart_material" style="width: 900px; height: 500px;"></div> </body> </html>
The Material Charts are in beta. The appearance and
interactivity are largely final, but many of the options available in Classic Charts are not yet
available in them. You can find a list of options that are not yet supported in
this issue.
Also, the way options are declared is not finalized, so if you are using any of
the classic options, you must convert them to material options by replacing this line:
chart.draw(data, options);
...with this:
chart.draw(data, google.charts.Bar.convertOptions(options));
Using google.charts.Bar.convertOptions()
allows you to take advantage of certain
features, such as the hAxis/vAxis.format
preset options.
Dual-X charts
Note: Dual-X axes are available only for
Material charts (i.e., those with package bar
).
Sometimes you'll want to display two series in a bar chart, with two independent x-axes: a top axis for one series, and a bottom axis for another:
Note that not only are our two x-axes labeled differently
("parsecs" versus "apparent magnitude") but they each have their own
independent scales and gridlines. If you want to customize this
behavior, use the hAxis.gridlines
options.
In the code below, the axes
and series
options together specify the dual-X appearance of the
chart. The series
option specifies which axis to use for
each ('distance'
and 'brightness'
; they
needn't have any relation to the column names in the
datatable). The axes
option then makes this chart a
dual-X chart, placing the 'apparent magnitude'
axis on
the top and the 'parsecs'
axis on the bottom.
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', {'packages':['bar']}); google.charts.setOnLoadCallback(drawStuff); function drawStuff() { var data = new google.visualization.arrayToDataTable([ ['Galaxy', 'Distance', 'Brightness'], ['Canis Major Dwarf', 8000, 23.3], ['Sagittarius Dwarf', 24000, 4.5], ['Ursa Major II Dwarf', 30000, 14.3], ['Lg. Magellanic Cloud', 50000, 0.9], ['Bootes I', 60000, 13.1] ]); var options = { width: 800, chart: { title: 'Nearby galaxies', subtitle: 'distance on the left, brightness on the right' }, bars: 'horizontal', // Required for Material Bar Charts. series: { 0: { axis: 'distance' }, // Bind series 0 to an axis named 'distance'. 1: { axis: 'brightness' } // Bind series 1 to an axis named 'brightness'. }, axes: { x: { distance: {label: 'parsecs'}, // Bottom x-axis. brightness: {side: 'top', label: 'apparent magnitude'} // Top x-axis. } } }; var chart = new google.charts.Bar(document.getElementById('dual_x_div')); chart.draw(data, options); }; </script> </head> <body> <div id="dual_x_div" style="width: 900px; height: 500px;"></div> </body> </html>
Top-X charts
Note: Top-X axes are available only for
Material charts (i.e., those with package bar
).
If you want to put the X-axis labels and title on the top of your
chart rather than the bottom, you can do that in Material charts with
the axes.x
option:
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', {'packages':['bar']}); google.charts.setOnLoadCallback(drawStuff); function drawStuff() { var data = new google.visualization.arrayToDataTable([ ['Opening Move', 'Percentage'], ["King's pawn (e4)", 44], ["Queen's pawn (d4)", 31], ["Knight to King 3 (Nf3)", 12], ["Queen's bishop pawn (c4)", 10], ['Other', 3] ]); var options = { title: 'Chess opening moves', width: 900, legend: { position: 'none' }, chart: { title: 'Chess opening moves', subtitle: 'popularity by percentage' }, bars: 'horizontal', // Required for Material Bar Charts. axes: { x: { 0: { side: 'top', label: 'Percentage'} // Top x-axis. } }, bar: { groupWidth: "90%" } }; var chart = new google.charts.Bar(document.getElementById('top_x_div')); chart.draw(data, options); }; </script> </head> <body> <div id="top_x_div" style="width: 900px; height: 500px;"></div> </body> </html>
Loading
The google.charts.load
package name is "corechart"
.
The visualization's class name is google.visualization.BarChart
.
google.charts.load("current", {packages: ["corechart"]});
var visualization = new google.visualization.BarChart(container);
For Material Bar Charts, the google.charts.load
package
name is "bar"
.
The visualization's class name
is google.charts.Bar
.
google.charts.load("current", {packages: ["bar"]});
var chart = new google.charts.Bar(container);
Data format
Rows: Each row in the table represents a group of bars.
Columns:
Column 0 | Column 1 | ... | Column N | |
---|---|---|---|---|
Purpose: |
|
Bar 1 values in this group | ... | Bar N values in this group |
Data Type: |
|
number | ... | number |
Role: | domain | data | ... | data |
Optional column roles: | ... |
Configuration options
Name | |
---|---|
animation.duration |
The duration of the animation, in milliseconds. For details, see the animation documentation. Type: number
Default: 0
|
animation.easing |
The easing function applied to the animation. The following options are available:
Type: string
Default: 'linear'
|
animation.startup |
Determines if the chart will animate on the initial draw. If Type: boolean
Default false
|
annotations.alwaysOutside |
In Bar
and
Column charts, if set to Type: boolean
Default: false
|
annotations.datum |
For charts that support
annotations,
the
annotations.datum object lets you override
Google Charts' choice for annotations provided for individual
data elements (such as values displayed with each bar on a bar
chart). You can control the color
with annotations.datum.stem.color , the stem length
with annotations.datum.stem.length , and the style with annotations.datum.style .
Type: object
Default: color is "black"; length is 12; style is "point".
|
annotations.domain |
For charts that support
annotations,
the
annotations.domain object lets you override
Google Charts' choice for annotations provided for a domain (the
major axis of the chart, such as the X axis on a typical line
chart). You can control the color
with annotations.domain.stem.color , the stem length
with annotations.domain.stem.length , and the style with annotations.domain.style .
Type: object
Default: color is "black"; length is 5; style is "point".
|
annotations.boxStyle |
For charts that support
annotations,
the var options = { annotations: { boxStyle: { // Color of the box outline. stroke: '#888', // Thickness of the box outline. strokeWidth: 1, // x-radius of the corner curvature. rx: 10, // y-radius of the corner curvature. ry: 10, // Attributes for linear gradient fill. gradient: { // Start color for gradient. color1: '#fbf6a7', // Finish color for gradient. color2: '#33b679', // Where on the boundary to start and // end the color1/color2 gradient, // relative to the upper left corner // of the boundary. x1: '0%', y1: '0%', x2: '100%', y2: '100%', // If true, the boundary for x1, // y1, x2, and y2 is the box. If // false, it's the entire chart. useObjectBoundingBoxUnits: true } } } }; This option is currently supported for area, bar, column, combo, line, and scatter charts. It is not supported by the Annotation Chart. Type: object
Default: null
|
annotations.highContrast |
For charts that support
annotations,
the
annotations.highContrast boolean lets you override Google Charts' choice of
the annotation color. By default, annotations.highContrast is true, which causes
Charts to select an annotation color with good contrast: light colors on dark backgrounds, and
dark on light. If you set annotations.highContrast to false and don't specify
your own annotation color, Google Charts will use the default series color for the annotation:
Type: boolean
Default: true
|
annotations.stem |
For charts that support
annotations,
the
annotations.stem object lets you override
Google Charts' choice for the stem style. You can control color
with annotations.stem.color and the stem length
with annotations.stem.length . Note that the stem
length option has no effect on annotations with
style 'line' : for 'line' datum
annotations, the stem length is always the same as the text, and
for 'line' domain annotations, the stem extends
across the entire chart.
Type: object
Default: color is "black"; length is 5 for domain annotations and 12 for datum annotations.
|
annotations.style |
For charts that support
annotations,
the
annotations.style option lets you override
Google Charts' choice of the annotation type. It can be
either 'line' or 'point' .
Type: string
Default: 'point'
|
annotations.textStyle |
For charts that support
annotations,
the
annotations.textStyle object controls the appearance of the text of
the annotation:
var options = { annotations: { textStyle: { fontName: 'Times-Roman', fontSize: 18, bold: true, italic: true, // The color of the text. color: '#871b47', // The color of the text outline. auraColor: '#d799ae', // The transparency of the text. opacity: 0.8 } } }; This option is currently supported for area, bar, column, combo, line, and scatter charts. It is not supported by the Annotation Chart . Type: object
Default: null
|
axisTitlesPosition |
Where to place the axis titles, compared to the chart area. Supported values:
Type: string
Default: 'out'
|
backgroundColor |
The background color for the main area of the chart. Can be either a simple HTML color string,
for example: Type: string or object
Default: 'white'
|
backgroundColor.stroke |
The color of the chart border, as an HTML color string. Type: string
Default: '#666'
|
backgroundColor.strokeWidth |
The border width, in pixels. Type: number
Default: 0
|
backgroundColor.fill |
The chart fill color, as an HTML color string. Type: string
Default: 'white'
|
bar.groupWidth |
The width of a group of bars, specified in either of these formats:
Type: number or string
Default:
The golden ratio,
approximately '61.8%'.
|
bars |
Whether the bars in a Material Bar Chart are vertical or horizontal. This option has no effect on Classic Bar Charts or Classic Column Charts. Type: 'horizontal' or 'vertical'
Default: 'vertical'
|
chartArea |
An object with members to configure the placement and size of the chart area (where the chart
itself is drawn, excluding axis and legends). Two formats are supported: a number, or a
number followed by %. A simple number is a value in pixels; a number followed by % is a
percentage. Example: Type: object
Default: null
|
chartArea.backgroundColor |
Chart area background color. When a string is used, it can be either a hex string
(e.g., '#fdc') or an English color name. When an object is used, the following properties can
be provided:
Type: string or object
Default: 'white'
|
chartArea.left |
How far to draw the chart from the left border. Type: number or string
Default: auto
|
chartArea.top |
How far to draw the chart from the top border. Type: number or string
Default: auto
|
chartArea.width |
Chart area width. Type: number or string
Default: auto
|
chartArea.height |
Chart area height. Type: number or string
Default: auto
|
chart.subtitle |
For Material Charts, this option specifies the subtitle. Only Material Charts support subtitles. Type: string
Default: null
|
chart.title |
For Material Charts, this option specifies the title. Type: string
Default: null
|
colors |
The colors to use for the chart elements. An array of strings, where each element is an HTML
color string, for example: Type: Array of strings
Default: default colors
|
dataOpacity |
The transparency of data points, with 1.0 being completely opaque and 0.0 fully transparent. In scatter, histogram, bar, and column charts, this refers to the visible data: dots in the scatter chart and rectangles in the others. In charts where selecting data creates a dot, such as the line and area charts, this refers to the circles that appear upon hover or selection. The combo chart exhibits both behaviors, and this option has no effect on other charts. (To change the opacity of a trendline, see trendline opacity .) Type: number
Default: 1.0
|
enableInteractivity |
Whether the chart throws user-based events or reacts to user interaction. If false, the chart will not throw 'select' or other interaction-based events (but will throw ready or error events), and will not display hovertext or otherwise change depending on user input. Type: boolean
Default: true
|
explorer |
The This feature is experimental and may change in future releases. Note: The explorer only works with continuous axes (such as numbers or dates). Type: object
Default: null
|
explorer.actions |
The Google Charts explorer supports three actions:
Type: Array of strings
Default: ['dragToPan', 'rightClickToReset']
|
explorer.axis |
By default, users can pan both horizontally and vertically when the Type: string
Default: both horizontal and vertical panning
|
explorer.keepInBounds |
By default, users can pan all around, regardless of where the data is. To ensure that users
don't pan beyond the original chart, use Type: boolean
Default: false
|
explorer.maxZoomIn |
The maximum that the explorer can zoom in. By default, users will be able to zoom in enough
that they'll see only 25% of the original view. Setting
Type: number
Default: 0.25
|
explorer.maxZoomOut |
The maximum that the explorer can zoom out. By default, users will be able to zoom out far
enough that the chart will take up only 1/4 of the available space. Setting
Type: number
Default: 4
|
explorer.zoomDelta |
When users zoom in or out, Type: number
Default: 1.5
|
focusTarget |
The type of the entity that receives focus on mouse hover. Also affects which entity is selected by mouse click, and which data table element is associated with events. Can be one of the following:
In focusTarget 'category' the tooltip displays all the category values. This may be useful for comparing values of different series. Type: string
Default: 'datum'
|
fontSize |
The default font size, in pixels, of all text in the chart. You can override this using properties for specific chart elements. Type: number
Default: automatic
|
fontName |
The default font face for all text in the chart. You can override this using properties for specific chart elements. Type: string
Default: 'Arial'
|
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
|
hAxes |
Specifies properties for individual horizontal axes, if the chart has multiple horizontal
axes. Each child object is a
To specify a chart with multiple horizontal axes, first define a new axis using
This property can be either an object or an array: the object is a collection of objects,
each with a numeric label that specifies the axis that it defines--this is the format shown
above; the array is an array of objects, one per axis. For example, the following array-style
notation is identical to the hAxes: { {}, // Nothing specified for axis 0 { title:'Losses', textStyle: { color: 'red' } } // Axis 1 Type: Array of object, or object with child objects
Default: null
|
hAxis |
An object with members to configure various horizontal axis elements. To specify properties of this object, you can use object literal notation, as shown here: { title: 'Hello', titleTextStyle: { color: '#FF0000' } } Type: object
Default: null
|
hAxis.baseline |
The baseline for the horizontal axis. Type: number
Default: automatic
|
hAxis.baselineColor |
The color of the baseline for the horizontal axis. Can be any HTML color string, for example:
Type: number
Default: 'black'
|
hAxis.direction |
The direction in which the values along the horizontal axis grow. Specify Type: 1 or -1
Default: 1
|
hAxis.format |
A format string for numeric axis labels. This is a subset of the
ICU pattern set
. For instance,
The actual formatting applied to the label is derived from the locale the API has been loaded with. For more details, see loading charts with a specific locale .
In computing tick values and gridlines, several alternative
combinations of all the relevant gridline
options will be considered and alternatives will be rejected if the
formatted tick labels would be duplicated or overlap.
So you can specify Type: string
Default: auto
|
hAxis.gridlines |
An object with properties to configure the gridlines on the horizontal axis. Note that horizontal axis gridlines are drawn vertically. To specify properties of this object, you can use object literal notation, as shown here: {color: '#333', minSpacing: 20} Type: object
Default: null
|
hAxis.gridlines.color |
The color of the horizontal gridlines inside the chart area. Specify a valid HTML color string. Type: string
Default: '#CCC'
|
hAxis.gridlines.count |
The approximate number of horizontal gridlines inside the chart area.
If you specify a positive number for Type: number
Default: -1
|
hAxis.gridlines.units |
Overrides the default format for various aspects of date/datetime/timeofday data types when used with chart computed gridlines. Allows formatting for years, months, days, hours, minutes, seconds, and milliseconds. General format is: gridlines: { units: { years: {format: [/*format strings here*/]}, months: {format: [/*format strings here*/]}, days: {format: [/*format strings here*/]} hours: {format: [/*format strings here*/]} minutes: {format: [/*format strings here*/]} seconds: {format: [/*format strings here*/]}, milliseconds: {format: [/*format strings here*/]}, } } Additional information can be found in Dates and Times. Type: object
Default: null
|
hAxis.minorGridlines |
An object with members to configure the minor gridlines on the horizontal axis, similar to the hAxis.gridlines option. Type: object
Default: null
|
hAxis.minorGridlines.color |
The color of the horizontal minor gridlines inside the chart area. Specify a valid HTML color string. Type: string
Default: A blend of the gridline and background colors
|
hAxis.minorGridlines.count |
The Type: number
Default:1
|
hAxis.minorGridlines.units |
Overrides the default format for various aspects of date/datetime/timeofday data types when used with chart computed minorGridlines. Allows formatting for years, months, days, hours, minutes, seconds, and milliseconds. General format is: gridlines: { units: { years: {format: [/*format strings here*/]}, months: {format: [/*format strings here*/]}, days: {format: [/*format strings here*/]} hours: {format: [/*format strings here*/]} minutes: {format: [/*format strings here*/]} seconds: {format: [/*format strings here*/]}, milliseconds: {format: [/*format strings here*/]}, } } Additional information can be found in Dates and Times. Type: object
Default: null
|
hAxis.logScale |
Type: boolean
Default: false
|
hAxis.scaleType |
Type: string
Default: null
|
hAxis.textStyle |
An object that specifies the horizontal axis text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> }
The Type: object
Default:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
hAxis.textPosition |
Position of the horizontal axis text, relative to the chart area. Supported values: 'out', 'in', 'none'. Type: string
Default: 'out'
|
hAxis.ticks |
Replaces the automatically generated X-axis ticks with the specified array. Each element of
the array should be either a valid tick value (such as a number, date, datetime, or
timeofday), or an object. If it's an object, it should have a
The viewWindow will be automatically expanded to
include the min and max ticks unless you specify a
Examples:
Type: Array of elements
Default: auto
|
hAxis.title |
Type: string
Default: null
|
hAxis.titleTextStyle |
An object that specifies the horizontal axis title text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> }
The Type: object
Default:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
hAxis.maxValue |
Moves the max value of the horizontal axis to the specified value; this will be rightward in
most charts. Ignored if this is set to a value smaller than the maximum x-value of the data.
Type: number
Default: automatic
|
hAxis.minValue |
Moves the min value of the horizontal axis to the specified value; this will be leftward in
most charts. Ignored if this is set to a value greater than the minimum x-value of the data.
Type: number
Default: automatic
|
hAxis.viewWindowMode |
Specifies how to scale the horizontal axis to render the values within the chart area. The following string values are supported:
Type: string
Default:
Equivalent to 'pretty', but
haxis.viewWindow.min and
haxis.viewWindow.max take precedence if used.
|
hAxis.viewWindow |
Specifies the cropping range of the horizontal axis. Type: object
Default: null
|
hAxis.viewWindow.max |
The maximum horizontal data value to render. Ignored when Type: number
Default: auto
|
hAxis.viewWindow.min |
The minimum horizontal data value to render. Ignored when Type: number
Default: auto
|
height |
Height of the chart, in pixels. Type: number
Default: height of the containing element
|
isStacked |
If set to true, stacks the elements for all series at each domain value. Note: In Column, Area, and SteppedArea charts, Google Charts reverses the order of legend items to better correspond with the stacking of the series elements (E.g. series 0 will be the bottom-most legend item). This does not apply to Bar Charts.
The The options for
For 100% stacking, the calculated value for each element will appear in the tooltip after its actual value.
The target axis will default to tick values based on the relative 0-1 scale as fractions
of 1 for
100% stacking only supports data values of type Type: boolean/string
Default: false
|
legend |
An object with members to configure various aspects of the legend. To specify properties of this object, you can use object literal notation, as shown here: {position: 'top', textStyle: {color: 'blue', fontSize: 16}} Type: object
Default: null
|
legend.pageIndex |
Initial selected zero-based page index of the legend. Type: number
Default: 0
|
legend.position |
Position of the legend. Can be one of the following:
Type: string
Default: 'right'
|
legend.alignment |
Alignment of the legend. Can be one of the following:
Start, center, and end are relative to the style -- vertical or horizontal -- of the legend. For example, in a 'right' legend, 'start' and 'end' are at the top and bottom, respectively; for a 'top' legend, 'start' and 'end' would be at the left and right of the area, respectively. The default value depends on the legend's position. For 'bottom' legends, the default is 'center'; other legends default to 'start'. Type: string
Default: automatic
|
legend.textStyle |
An object that specifies the legend text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> }
The Type: object
Default:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
reverseCategories |
If set to true, will draw series from bottom to top. The default is to draw top-to-bottom. Type: boolean
Default: false
|
orientation |
The orientation of the chart. When set to Type: string
Default: 'horizontal'
|
series |
An array of objects, each describing the format of the corresponding series in the chart. To use default values for a series, specify an empty object {}. If a series or a value is not specified, the global value will be used. Each object supports the following properties:
You can specify either an array of objects, each of which applies to the series in the order given, or you can specify an object where each child has a numeric key indicating which series it applies to. For example, the following two declarations are identical, and declare the first series as black and absent from the legend, and the fourth as red and absent from the legend: series: [ {color: 'black', visibleInLegend: false}, {}, {}, {color: 'red', visibleInLegend: false} ] series: { 0:{color: 'black', visibleInLegend: false}, 3:{color: 'red', visibleInLegend: false} } Type: Array of objects, or object with nested objects
Default: {}
|
theme |
A theme is a set of predefined option values that work together to achieve a specific chart behavior or visual effect. Currently only one theme is available:
Type: string
Default: null
|
title |
Text to display above the chart. Type: string
Default: no title
|
titlePosition |
Where to place the chart title, compared to the chart area. Supported values:
Type: string
Default: 'out'
|
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:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
tooltip |
An object with members to configure various tooltip elements. To specify properties of this object, you can use object literal notation, as shown here: {textStyle: {color: '#FF0000'}, showColorCode: true} Type: object
Default: null
|
tooltip.ignoreBounds |
If set to Note: This only applies to HTML tooltips. If this is enabled with SVG tooltips, any overflow outside of the chart bounds will be cropped. See Customizing Tooltip Content for more details. Type: boolean
Default: false
|
tooltip.isHtml |
If set to true, use HTML-rendered (rather than SVG-rendered) tooltips. See Customizing Tooltip Content for more details. Note: customization of the HTML tooltip content via the tooltip column data role is not supported by the Bubble Chart visualization. Type: boolean
Default: false
|
tooltip.showColorCode |
If true, show colored squares next to the series information in the tooltip. The default is
true when Type: boolean
Default: automatic
|
tooltip.textStyle |
An object that specifies the tooltip text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> }
The Type: object
Default:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
tooltip.trigger |
The user interaction that causes the tooltip to be displayed:
Type: string
Default: 'focus'
|
trendlines |
Displays
trendlines
on the charts that support them. By default, linear trendlines are
used, but this can be customized with the
Trendlines are specified on a per-series basis, so most of the time your options will look like this: var options = { trendlines: { 0: { type: 'linear', color: 'green', lineWidth: 3, opacity: 0.3, showR2: true, visibleInLegend: true } } } Type: object
Default: null
|
trendlines.n.color |
The color of the trendline , expressed as either an English color name or a hex string. Type: string
Default: default series color
|
trendlines.n.degree |
For
trendlines
of Type: number
Default: 3
|
trendlines.n.labelInLegend |
If set, the trendline will appear in the legend as this string. Type: string
Default: null
|
trendlines.n.lineWidth |
The line width of the trendline , in pixels. Type: number
Default: 2
|
trendlines.n.opacity |
The transparency of the trendline , from 0.0 (transparent) to 1.0 (opaque). Type: number
Default: 1.0
|
trendlines.n.pointSize |
Trendlines
are constucted by stamping a bunch of dots on the chart; this rarely-needed option lets you
customize the size of the dots. The trendline's Type: number
Default: 1
|
trendlines.n.pointsVisible |
Trendlines
are constucted by stamping a bunch of dots on the chart. The trendline's
Type: boolean
Default: true
|
trendlines.n.showR2 |
Whether to show the coefficient of determination in the legend or trendline tooltip. Type: boolean
Default: false
|
trendlines.n.type |
Whether the
trendlines
is Type: string
Default: linear
|
trendlines.n.visibleInLegend |
Whether the trendline equation appears in the legend. (It will appear in the trendline tooltip.) Type: boolean
Default: false
|
vAxis |
An object with members to configure various vertical axis elements. To specify properties of this object, you can use object literal notation, as shown here: {title: 'Hello', titleTextStyle: {color: '#FF0000'}} Type: object
Default: null
|
vAxis.baseline |
This option is only supported for a
Type: number
Default: automatic
|
vAxis.baselineColor |
Specifies the color of the baseline for the vertical axis. Can be any HTML color string, for
example:
This option is only supported for a
Type: number
Default: 'black'
|
vAxis.direction |
The direction in which the values along the vertical axis grow. By default, low values
are on the bottom of the chart. Specify Type: 1 or -1
Default: 1
|
vAxis.format |
A format string for numeric or date axis labels.
For number axis labels, this is a subset of the decimal formatting
ICU pattern set
.
For instance,
For date axis labels, this is a subset of the date formatting
ICU pattern set
.
For instance, The actual formatting applied to the label is derived from the locale the API has been loaded with. For more details, see loading charts with a specific locale .
In computing tick values and gridlines, several alternative
combinations of all the relevant gridline
options will be considered and alternatives will be rejected if the
formatted tick labels would be duplicated or overlap.
So you can specify
This option is only supported for a
Type: string
Default: auto
|
vAxis.gridlines |
An object with members to configure the gridlines on the vertical axis. Note that vertical axis gridlines are drawn horizontally. To specify properties of this object, you can use object literal notation, as shown here: {color: '#333', minSpacing: 20}
This option is only supported for a
Type: object
Default: null
|
vAxis.gridlines.color |
The color of the vertical gridlines inside the chart area. Specify a valid HTML color string. Type: string
Default: '#CCC'
|
vAxis.gridlines.count |
The approximate number of horizontal gridlines inside the chart area.
If you specify a positive number for Type: number
Default: -1
|
vAxis.gridlines.units |
Overrides the default format for various aspects of date/datetime/timeofday data types when used with chart computed gridlines. Allows formatting for years, months, days, hours, minutes, seconds, and milliseconds. General format is: gridlines: { units: { years: {format: [/*format strings here*/]}, months: {format: [/*format strings here*/]}, days: {format: [/*format strings here*/]}, hours: {format: [/*format strings here*/]}, minutes: {format: [/*format strings here*/]}, seconds: {format: [/*format strings here*/]}, milliseconds: {format: [/*format strings here*/]} } } Additional information can be found in Dates and Times. Type: object
Default: null
|
vAxis.minorGridlines |
An object with members to configure the minor gridlines on the vertical axis, similar to the vAxis.gridlines option.
This option is only supported for a
Type: object
Default: null
|
vAxis.minorGridlines.color |
The color of the vertical minor gridlines inside the chart area. Specify a valid HTML color string. Type: string
Default: A blend of the gridline and background colors
|
vAxis.minorGridlines.count |
The minorGridlines.count option is mostly deprecated, except for disabling minor gridlines by setting the count to 0. The number of minor gridlines depends on the interval between major gridlines (see vAxis.gridlines.interval) and the minimum required space (see vAxis.minorGridlines.minSpacing). Type: number
Default: 1
|
vAxis.minorGridlines.units |
Overrides the default format for various aspects of date/datetime/timeofday data types when used with chart computed minorGridlines. Allows formatting for years, months, days, hours, minutes, seconds, and milliseconds. General format is: gridlines: { units: { years: {format: [/*format strings here*/]}, months: {format: [/*format strings here*/]}, days: {format: [/*format strings here*/]} hours: {format: [/*format strings here*/]} minutes: {format: [/*format strings here*/]} seconds: {format: [/*format strings here*/]}, milliseconds: {format: [/*format strings here*/]}, } } Additional information can be found in Dates and Times. Type: object
Default: null
|
vAxis.logScale |
If true, makes the vertical axis a logarithmic scale. Note: All values must be positive.
This option is only supported for a
Type: boolean
Default: false
|
vAxis.scaleType |
Type: string
Default: null
|
vAxis.textPosition |
Position of the vertical axis text, relative to the chart area. Supported values: 'out', 'in', 'none'. Type: string
Default: 'out'
|
vAxis.textStyle |
An object that specifies the vertical axis text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> }
The Type: object
Default:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
vAxis.ticks |
Replaces the automatically generated Y-axis ticks with the specified array. Each element of
the array should be either a valid tick value (such as a number, date, datetime, or
timeofday), or an object. If it's an object, it should have a
The viewWindow will be automatically expanded to
include the min and max ticks unless you specify a
Examples:
This option is only supported for a
Type: Array of elements
Default: auto
|
vAxis.title |
Type: string
Default: no title
|
vAxis.titleTextStyle |
An object that specifies the vertical axis title text style. The object has this format: { color: <string>, fontName: <string>, fontSize: <number>, bold: <boolean>, italic: <boolean> }
The Type: object
Default:
{color: 'black', fontName: <global-font-name>, fontSize: <global-font-size>}
|
vAxis.maxValue |
Moves the max value of the vertical axis to the specified value; this will be upward in most
charts. Ignored if this is set to a value smaller than the maximum y-value of the data.
This option is only supported for a
Type: number
Default: automatic
|
vAxis.minValue |
Moves the min value of the vertical axis to the specified value; this will be downward in
most charts. Ignored if this is set to a value greater than the minimum y-value of the data.
This option is only supported for a
Type: number
Default: null
|
vAxis.viewWindowMode |
Specifies how to scale the vertical axis to render the values within the chart area. The following string values are supported:
This option is only supported for a
Type: string
Default:
Equivalent to 'pretty', but
vaxis.viewWindow.min and
vaxis.viewWindow.max take precedence if used.
|
vAxis.viewWindow |
Specifies the cropping range of the vertical axis. Type: object
Default: null
|
vAxis.viewWindow.max |
Ignored when Type: number
Default: auto
|
vAxis.viewWindow.min |
Ignored when Type: number
Default: auto
|
width |
Width of the chart, in pixels. Type: number
Default: width of the containing element
|
Methods
Method | |
---|---|
draw(data, options) |
Draws the chart. The chart accepts further method calls only after the
Return Type: none
|
getAction(actionID) |
Returns the tooltip action object with the requested Return Type: object
|
getBoundingBox(id) |
Returns an object containing the left, top, width, and height of chart element
Values are relative to the container of the chart. Call this after the chart is drawn. Return Type: object
|
getChartAreaBoundingBox() |
Returns an object containing the left, top, width, and height of the chart content (i.e., excluding labels and legend):
Values are relative to the container of the chart. Call this after the chart is drawn. Return Type: object
|
getChartLayoutInterface() |
Returns an object containing information about the onscreen placement of the chart and its elements. The following methods can be called on the returned object:
Call this after the chart is drawn. Return Type: object
|
getHAxisValue(xPosition, optional_axis_index) |
Returns the horizontal data value at Example: Call this after the chart is drawn. Return Type: number
|
getImageURI() |
Returns the chart serialized as an image URI. Call this after the chart is drawn. See Printing PNG Charts. Return Type: string
|
getSelection() |
Returns an array of the selected chart entities.
Selectable entities are bars, legend entries and categories.
For this chart, only one entity can be selected at any given moment.
Return Type: Array of selection elements
|
getVAxisValue(yPosition, optional_axis_index) |
Returns the vertical data value at Example: Call this after the chart is drawn. Return Type: number
|
getXLocation(dataValue, optional_axis_index) |
Returns the pixel x-coordinate of Example: Call this after the chart is drawn. Return Type: number
|
getYLocation(dataValue, optional_axis_index) |
Returns the pixel y-coordinate of Example: Call this after the chart is drawn. Return Type: number
|
removeAction(actionID) |
Removes the tooltip action with the requested Return Type:
none |
setAction(action) |
Sets a tooltip action to be executed when the user clicks on the action text.
The
Any and all tooltip actions should be set prior to calling the chart's Return Type:
none |
setSelection() |
Selects the specified chart entities. Cancels any previous selection.
Selectable entities are bars, legend entries and categories.
For this chart, only one entity can be selected at a time.
Return Type: none
|
clearChart() |
Clears the chart, and releases all of its allocated resources. Return Type: none
|
Events
For more information on how to use these events, see Basic Interactivity, Handling Events, and Firing Events.
Name | |
---|---|
animationfinish |
Fired when transition animation is complete. Properties: none
|
click |
Fired when the user clicks inside the chart. Can be used to identify when the title, data elements, legend entries, axes, gridlines, or labels are clicked. Properties: targetID
|
error |
Fired when an error occurs when attempting to render the chart. Properties: id, message
|
legendpagination |
Fired when the user clicks legend pagination arrows. Passes back the current legend zero-based page index and the total number of pages. Properties: currentPageIndex, totalPages
|
onmouseover |
Fired when the user mouses over a visual entity. Passes back the row and column indices of the corresponding data table element. A bar correlates to a cell in the data table, a legend entry to a column (row index is null), and a category to a row (column index is null). Properties: row, column
|
onmouseout |
Fired when the user mouses away from a visual entity. Passes back the row and column indices of the corresponding data table element. A bar correlates to a cell in the data table, a legend entry to a column (row index is null), and a category to a row (column index is null). Properties: row, column
|
ready |
The 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
|
select |
Fired when the user clicks a visual entity. To learn what has been selected, call
Properties: none
|
Data policy
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