## Overview A bubble chart that is rendered within the browser using [SVG](http://www.w3.org/Graphics/SVG/) or [VML](http://en.wikipedia.org/wiki/Vector_Markup_Language). Displays tips when hovering over bubbles. A bubble chart is used to visualize a data set with two to four dimensions. The first two dimensions are visualized as coordinates, the third as color and the fourth as size. ## Example \

``` ## Color By Numbers You can use the `colorAxis` option to color the bubbles in proportion to a value, as shown in the example below. ```

``` ## Customizing Labels You can control the bubble typeface, font, and color with the `bubble.textStyle` option: Options ``` var options = { title: 'Fertility rate vs life expectancy in selected countries (2010).' + ' X=Life Expectancy, Y=Fertility, Bubble size=Population, Bubble color=Region', hAxis: {title: 'Life Expectancy'}, vAxis: {title: 'Fertility Rate'}, bubble: { textStyle: { fontSize: 12, fontName: 'Times-Roman', color: 'green', bold: true, italic: true } } }; ``` Full Web Page ```

``` Labels on the above chart are hard to read, and one of the reasons is the white space around them. That's called an *aura*, and if you'd prefer your charts without them, you can set `bubble.textStyle.auraColor` to `'none'`. Options ``` var options = { title: 'Fertility rate vs life expectancy in selected countries (2010).' + ' X=Life Expectancy, Y=Fertility, Bubble size=Population, Bubble color=Region', hAxis: {title: 'Life Expectancy'}, vAxis: {title: 'Fertility Rate'}, bubble: { textStyle: { auraColor: 'none' } } }; ``` Full Web Page ```

``` ## Loading The `google.charts.load` package name is `"corechart"`. ``` google.charts.load("current", {packages: ["corechart"]}); ``` The visualization's class name is `google.visualization.BubbleChart`. ``` var visualization = new google.visualization.BubbleChart(container); ``` ## Data Format **Rows:** Each row in the table represents a single bubble. **Columns:** | | Column 0 | Column 1 | Column 2 | Column 3 (optional) | Column 4 (optional) | | Purpose: | ID (name) of the bubble | X coordinate | Y coordinate | Either a series ID or a value representing a color on a gradient scale, depending on the column type: - string A string that identifies bubbles in the same series. Use the same value to identify all bubbles that belong to the same series; bubbles in the same series will be assigned the same color. Series can be configured using the `series` option. - number A value that is mapped to an actual color on a gradient scale using the `colorAxis` option. | Size; values in this column are mapped to actual pixel values using the `sizeAxis` option. | | Data Type: | string | number | number | string or number | number | |---|---|---|---|---|---| ## Configuration Options | Name || |---|---| | animation.duration | The duration of the animation, in milliseconds. For details, see the [animation documentation](https://developers.google.com/chart/interactive/docs/animation). **Type:** number **Default:** 0 | | animation.easing | The easing function applied to the animation. The following options are available: - 'linear' - Constant speed. - 'in' - Ease in - Start slow and speed up. - 'out' - Ease out - Start fast and slow down. - 'inAndOut' - Ease in and out - Start slow, speed up, then slow down. **Type:** string **Default:** 'linear' | | animation.startup | Determines if the chart will animate on the initial draw. If `true`, the chart will start at the baseline and animate to its final state. **Type:** boolean **Default** false | | axisTitlesPosition | Where to place the axis titles, compared to the chart area. Supported values: - in - Draw the axis titles inside the chart area. - out - Draw the axis titles outside the chart area. - none - Omit the axis titles. **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: `'red'` or `'#00cc00'`, or an object with the following properties. **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' | | bubble | An object with members to configure the visual properties of the bubbles. **Type:** object **Default:** null | | bubble.opacity | The opacity of the bubbles, where 0 is fully transparent and 1 is fully opaque. **Type:** number between 0.0 and 1.0 **Default:** 0.8 | | bubble.stroke | The color of the bubbles' stroke. **Type:** string **Default:** '#ccc' | | bubble.textStyle | An object that specifies the bubble text style. The object has this format: ``` {color: , fontName: , fontSize: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | 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: `chartArea:{left:20,top:0,width:'50%',height:'75%'}` **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: - `stroke`: the color, provided as a hex string or English color name. - `strokeWidth`: if provided, draws a border around the chart area of the given width (and with the color of `stroke`). **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 | | colors | The colors to use for the chart elements. An array of strings, where each element is an HTML color string, for example: `colors:['red','#004411']`. **Type:** Array of strings **Default:** default colors | | colorAxis | An object that specifies a mapping between color column values and colors or a gradient scale. To specify properties of this object, you can use object literal notation, as shown here: ``` {minValue: 0, colors: ['#FF0000', '#00FF00']} ``` **Type:** object **Default:** null | | colorAxis.minValue | If present, specifies a minimum value for chart color data. Color data values of this value and lower will be rendered as the first color in the `colorAxis.colors` range. **Type:** number **Default:** Minimum value of color column in chart data | | colorAxis.maxValue | If present, specifies a maximum value for chart color data. Color data values of this value and higher will be rendered as the last color in the `colorAxis.colors` range. **Type:** number **Default:** Maximum value of color column in chart data | | colorAxis.values | If present, controls how values are associated with colors. Each value is associated with the corresponding color in the `colorAxis.colors` array. These values apply to the chart color data. Coloring is done according to a gradient of the values specified here. Not specifying a value for this option is equivalent to specifying \[minValue, maxValue\]. **Type:** array of numbers **Default:** null | | colorAxis.colors | Colors to assign to values in the visualization. An array of strings, where each element is an HTML color string, for example: `colorAxis: {colors:['red','#004411']}`. You must have at least two values; the gradient will include all your values, plus calculated intermediary values, with the first color as the smallest value, and the last color as the highest. **Type:** array of color strings **Default:** null | | colorAxis.legend | An object that specifies the style of the gradient color legend. **Type:** object **Default:** null | | colorAxis.legend.position | Position of the legend. Can be one of the following: - 'top' - Above the chart. - 'bottom' - Below the chart. - 'in' - Inside the chart, at the top. - 'none' - No legend is displayed. **Type:** object **Default:** 'top' | | colorAxis.legend.textStyle | An object that specifies the legend text style. The object has this format: ``` {color: , fontName: , fontSize: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | colorAxis.legend.numberFormat | A format string for numeric labels. This is a subset of the [ICU pattern set](http://icu-project.org/apiref/icu4c/classDecimalFormat.html#_details). For instance, `{numberFormat:'.##'}` will display values "10.66", "10.6", and "10.0" for values 10.666, 10.6, and 10. **Type:** string **Default:** auto | | 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 `explorer` option allows users to pan and zoom Google charts. `explorer: {}` provides the default explorer behavior, enabling users to pan horizontally and vertically by dragging, and to zoom in and out by scrolling. 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: - `dragToPan`: Drag to pan around the chart horizontally and vertically. To pan only along the horizontal axis, use `explorer: { axis: 'horizontal' }`. Similarly for the vertical axis. - `dragToZoom`: The explorer's default behavior is to zoom in and out when the user scrolls. If `explorer: { actions: ['dragToZoom', 'rightClickToReset'] }` is used, dragging across a rectangular area zooms into that area. We recommend using `rightClickToReset` whenever `dragToZoom` is used. See `explorer.maxZoomIn`, `explorer.maxZoomOut`, and `explorer.zoomDelta` for zoom customizations. - `rightClickToReset`: Right clicking on the chart returns it to the original pan and zoom level. **Type:** Array of strings **Default:** \['dragToPan', 'rightClickToReset'\] | | explorer.axis | By default, users can pan both horizontally and vertically when the `explorer` option is used. If you want to users to only pan horizontally, use `explorer: { axis: 'horizontal' }`. Similarly, `explorer: { axis: 'vertical' }` enables vertical-only panning. **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 `explorer: { keepInBounds: true }`. **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 `explorer: { maxZoomIn: .5 }` would let users zoom in only far enough to see half of the original view. **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 `explorer: { maxZoomOut: 8 }` would let users zoom out far enough that the chart would take up only 1/8 of the available space. **Type:** number **Default:** 4 | | explorer.zoomDelta | When users zoom in or out, `explorer.zoomDelta` determines how much they zoom by. The smaller the number, the smoother and slower the zoom. **Type:** number **Default:** 1.5 | | 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 | | 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: `'red'` or `'#00cc00'`. **Type:** number **Default:** 'black' | | hAxis.direction | The direction in which the values along the horizontal axis grow. Specify `-1` to reverse the order of the values. **Type:** 1 or -1 **Default:** 1 | | hAxis.format | A format string for numeric axis labels. This is a subset of the [ICU pattern set](http://icu-project.org/apiref/icu4c/classDecimalFormat.html#_details). For instance, `{format:'#,###%'}` will display values "1,000%", "750%", and "50%" for values 10, 7.5, and 0.5. You can also supply any of the following: - `{format: 'none'}`: displays numbers with no formatting (e.g., 8000000) - `{format: 'decimal'}`: displays numbers with thousands separators (e.g., 8,000,000) - `{format: 'scientific'}`: displays numbers in scientific notation (e.g., 8e6) - `{format: 'currency'}`: displays numbers in the local currency (e.g., $8,000,000.00) - `{format: 'percent'}`: displays numbers as percentages (e.g., 800,000,000%) - `{format: 'short'}`: displays abbreviated numbers (e.g., 8M) - `{format: 'long'}`: displays numbers as full words (e.g., 8 million) 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](https://developers.google.com/chart/interactive/docs/library_loading_enhancements#loadwithlocale). 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 `format:"#"` if you want to only show integer tick values, but be aware that if no alternative satisfies this condition, no gridlines or ticks will be shown. **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 `gridlines.count`, it will be used to compute the `minSpacing` between gridlines. You can specify a value of `1` to only draw one gridline, or `0` to draw no gridlines. Specify -1, which is the default, to automatically compute the number of gridlines based on other options. **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](https://developers.google.com/chart/interactive/docs/datesandtimes#axesgridlinesticks). **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 `minorGridlines.count` option is mostly deprecated, except for disabling minor gridlines by setting the count to 0. The number of minor gridlines now depends entirely on the interval between major gridlines (see `hAxis.gridlines.interval`) and the minimum required space (see `hAxis.minorGridlines.minSpacing`). **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](https://developers.google.com/chart/interactive/docs/datesandtimes#axesgridlinesticks). **Type:** object **Default:** null | | hAxis.logScale | `hAxis` property that makes the horizontal axis a logarithmic scale (requires all values to be positive). Set to true for yes. **Type:** boolean **Default:** false | | hAxis.scaleType | `hAxis` property that makes the horizontal axis a logarithmic scale. Can be one of the following: - null - No logarithmic scaling is performed. - 'log' - Logarithmic scaling. Negative and zero values are not plotted. This option is the same as setting `hAxis: { logscale: true }`. - 'mirrorLog' - Logarithmic scaling in which negative and zero values are plotted. The plotted value of a negative number is the negative of the log of the absolute value. Values close to 0 are plotted on a linear scale. **Type:** string **Default: null** | | hAxis.textPosition | Position of the horizontal axis text, relative to the chart area. Supported values: 'out', 'in', 'none'. **Type:** string **Default:** 'out' | | hAxis.textStyle | An object that specifies the horizontal axis text style. The object has this format: ``` { color: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | 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 `v` property for the tick value, and an optional `f` property containing the literal string to be displayed as the label. The viewWindow will be automatically expanded to include the min and max ticks unless you specify a `viewWindow.min` or `viewWindow.max` to override. Examples: - `hAxis: { ticks: [5,10,15,20] }` - `hAxis: { ticks: [{v:32, f:'thirty two'}, {v:64, f:'sixty four'}] }` - `hAxis: { ticks: [new Date(2014,3,15), new Date(2013,5,15)] }` - `hAxis: { ticks: [16, {v:32, f:'thirty two'}, {v:64, f:'sixty four'}, 128] }` **Type:** Array of elements **Default:** auto | | hAxis.title | `hAxis` property that specifies the title of the horizontal axis. **Type:** string **Default:** null | | hAxis.titleTextStyle | An object that specifies the horizontal axis title text style. The object has this format: ``` { color: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | 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. `hAxis.viewWindow.max` overrides this property. **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. `hAxis.viewWindow.min` overrides this property. **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: - 'pretty' - Scale the horizontal values so that the maximum and minimum data values are rendered a bit inside the left and right of the chart area. The viewWindow is expanded to the nearest major gridline for numbers, or the nearest minor gridline for dates and times. - 'maximized' - Scale the horizontal values so that the maximum and minimum data values touch the left and right of the chart area. This will cause `haxis.viewWindow.min` and `haxis.viewWindow.max` to be ignored. - 'explicit' - A deprecated option for specifying the left and right scale values of the chart area. (Deprecated because it's redundant with `haxis.viewWindow.min` and `haxis.viewWindow.max`.) Data values outside these values will be cropped. You must specify an `hAxis.viewWindow` object describing the maximum and minimum values to show. **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 `hAxis.viewWindowMode` is 'pretty' or 'maximized'. **Type:** number **Default:** auto | | hAxis.viewWindow.min | The minimum horizontal data value to render. Ignored when `hAxis.viewWindowMode` is 'pretty' or 'maximized'. **Type:** number **Default:** auto | | height | Height of the chart, in pixels. **Type:** number **Default:** height of the containing element | | 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.alignment | Alignment of the legend. Can be one of the following: - 'start' - Aligned to the start of the area allocated for the legend. - 'center' - Centered in the area allocated for the legend. - 'end' - Aligned to the end of the area allocated for the legend. 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.maxLines | Maximum number of lines in the legend. Set this to a number greater than one to add lines to your legend. Note: The exact logic used to determine the actual number of lines rendered is still in flux. This option currently works only when legend.position is 'top'. **Type:** number **Default:** 1 | | 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: - 'bottom' - Below the chart. - 'left' - To the left of the chart, provided the left axis has no series associated with it. So if you want the legend on the left, use the option `targetAxisIndex: 1`. - 'in' - Inside the chart, by the top left corner. - 'none' - No legend is displayed. - 'right' - To the right of the chart. Incompatible with the `vAxes` option. - 'top' - Above the chart. **Type:** string **Default:** 'right' | | legend.textStyle | An object that specifies the legend text style. The object has this format: ``` { color: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | selectionMode | When `selectionMode` is `'multiple'`, users may select multiple data points. **Type:** string **Default:** 'single' | | series | An object of objects, where the keys are series names (the values in the Color column) and each object describing the format of the corresponding series in the chart. If a series or a value is not specified, the global value will be used. Each object supports the following properties: - `color` - The color to use for this series. Specify a valid HTML color string. - `visibleInLegend` - A boolean value, where true means that the series should have a legend entry, and false means that it should not. Default is true. Example: ``` series: {'Europe': {color: 'green'}} ``` **Type:** Object with nested objects **Default:** {} | | sizeAxis | An object with members to configure how values are associated with bubble size. To specify properties of this object, you can use object literal notation, as shown here: ``` {minValue: 0, maxSize: 20} ``` **Type:** object **Default:** null | | sizeAxis.maxSize | Maximum radius of the largest possible bubble, in pixels. **Type:** number **Default:** 30 | | sizeAxis.maxValue | The size value (as appears in the chart data) to be mapped to `sizeAxis.maxSize`. Larger values will be cropped to this value. **Type:** number **Default:** Maximum value of size column in chart data | | sizeAxis.minSize | Mininum radius of the smallest possible bubble, in pixels. **Type:** number **Default:** 5 | | sizeAxis.minValue | The size value (as appears in the chart data) to be mapped to `sizeAxis.minSize`. Smaller values will be cropped to this value. **Type:** number **Default:** Minimum value of size column in chart data | | sortBubblesBySize | If true, sorts the bubbles by size so the smaller bubbles appear above the larger bubbles. If false, bubbles are sorted according to their order in the DataTable. **Type:** boolean **Default:** true | | 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: - 'maximized' - Maximizes the area of the chart, and draws the legend and all of the labels inside the chart area. Sets the following options: ``` chartArea: {width: '100%', height: '100%'}, legend: {position: 'in'}, titlePosition: 'in', axisTitlesPosition: 'in', hAxis: {textPosition: 'in'}, vAxis: {textPosition: 'in'} ``` **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: - in - Draw the title inside the chart area. - out - Draw the title outside the chart area. - none - Omit the title. **Type:** string **Default:** 'out' | | titleTextStyle | An object that specifies the title text style. The object has this format: ``` { color: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | 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.isHtml | If set to true, use HTML-rendered (rather than SVG-rendered) tooltips. See [Customizing Tooltip Content](https://developers.google.com/chart/interactive/docs/customizing_tooltip_content) for more details. **Note:** customization of the HTML tooltip content via the [tooltip column data role](https://developers.google.com/chart/interactive/docs/roles#tooltiprole) is **not** supported by the [Bubble Chart](https://developers.google.com/chart/interactive/docs/gallery/bubblechart) visualization. **Type:** boolean **Default:** false | | tooltip.textStyle | An object that specifies the tooltip text style. The object has this format: ``` { color: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | tooltip.trigger | The user interaction that causes the tooltip to be displayed: - 'focus' - The tooltip will be displayed when the user hovers over the element. - 'none' - The tooltip will not be displayed. - 'selection' - The tooltip will be displayed when the user selects the element. **Type:** string **Default:** 'focus' | | 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 | `vAxis` property that specifies the baseline for the vertical axis. If the baseline is larger than the highest grid line or smaller than the lowest grid line, it will be rounded to the closest gridline. **Type:** number **Default:** automatic | | vAxis.baselineColor | Specifies the color of the baseline for the vertical axis. Can be any HTML color string, for example: `'red'` or `'#00cc00'`. **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 `-1` to reverse the order of the values. **Type:** 1 or -1 **Default:** 1 | | vAxis.format | A format string for numeric axis labels. This is a subset of the [ICU pattern set](http://icu-project.org/apiref/icu4c/classDecimalFormat.html#_details). For instance, `{format:'#,###%'}` will display values "1,000%", "750%", and "50%" for values 10, 7.5, and 0.5. You can also supply any of the following: - `{format: 'none'}`: displays numbers with no formatting (e.g., 8000000) - `{format: 'decimal'}`: displays numbers with thousands separators (e.g., 8,000,000) - `{format: 'scientific'}`: displays numbers in scientific notation (e.g., 8e6) - `{format: 'currency'}`: displays numbers in the local currency (e.g., $8,000,000.00) - `{format: 'percent'}`: displays numbers as percentages (e.g., 800,000,000%) - `{format: 'short'}`: displays abbreviated numbers (e.g., 8M) - `{format: 'long'}`: displays numbers as full words (e.g., 8 million) 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](https://developers.google.com/chart/interactive/docs/library_loading_enhancements#loadwithlocale). 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 `format:"#"` if you want to only show integer tick values, but be aware that if no alternative satisfies this condition, no gridlines or ticks will be shown. **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} ``` **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 `gridlines.count`, it will be used to compute the `minSpacing` between gridlines. You can specify a value of `1` to only draw one gridline, or `0` to draw no gridlines. Specify -1, which is the default, to automatically compute the number of gridlines based on other options. **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](https://developers.google.com/chart/interactive/docs/datesandtimes#axesgridlinesticks). **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. **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](https://developers.google.com/chart/interactive/docs/datesandtimes#axesgridlinesticks). **Type:** object **Default:** null | | vAxis.logScale | If true, makes the vertical axis a logarithmic scale. Note: All values must be positive. **Type:** boolean **Default:** false | | vAxis.scaleType | `vAxis` property that makes the vertical axis a logarithmic scale. Can be one of the following: - null - No logarithmic scaling is performed. - 'log' - Logarithmic scaling. Negative and zero values are not plotted. This option is the same as setting `vAxis: { logscale: true }`. - 'mirrorLog' - Logarithmic scaling in which negative and zero values are plotted. The plotted value of a negative number is the negative of the log of the absolute value. Values close to 0 are plotted on a linear scale. **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: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | 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 `v` property for the tick value, and an optional `f` property containing the literal string to be displayed as the label. The viewWindow will be automatically expanded to include the min and max ticks unless you specify a `viewWindow.min` or `viewWindow.max` to override. Examples: - `vAxis: { ticks: [5,10,15,20] }` - `vAxis: { ticks: [{v:32, f:'thirty two'}, {v:64, f:'sixty four'}] }` - `vAxis: { ticks: [new Date(2014,3,15), new Date(2013,5,15)] }` - `vAxis: { ticks: [16, {v:32, f:'thirty two'}, {v:64, f:'sixty four'}, 128] }` **Type:** Array of elements **Default:** auto | | vAxis.title | `vAxis` property that specifies a title for the vertical axis. **Type:** string **Default:** no title | | vAxis.titleTextStyle | An object that specifies the vertical axis title text style. The object has this format: ``` { color: , fontName: , fontSize: , bold: , italic: } ``` The `color` can be any HTML color string, for example: `'red'` or `'#00cc00'`. Also see `fontName` and `fontSize`. **Type:** object **Default:** ` {color: 'black', fontName: , fontSize: } ` | | 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. `vAxis.viewWindow.max` overrides this property. **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. `vAxis.viewWindow.min` overrides this property. **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: - 'pretty' - Scale the vertical values so that the maximum and minimum data values are rendered a bit inside the bottom and top of the chart area. The viewWindow is expanded to the nearest major gridline for numbers, or the nearest minor gridline for dates and times. - 'maximized' - Scale the vertical values so that the maximum and minimum data values touch the top and bottom of the chart area. This will cause `vaxis.viewWindow.min` and `vaxis.viewWindow.max` to be ignored. - 'explicit' - A deprecated option for specifying the top and bottom scale values of the chart area. (Deprecated because it's redundant with `vaxis.viewWindow.min` and `vaxis.viewWindow.max`. Data values outside these values will be cropped. You must specify a `vAxis.viewWindow` object describing the maximum and minimum values to show. **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 | The maximum vertical data value to render. Ignored when `vAxis.viewWindowMode` is 'pretty' or 'maximized'. **Type:** number **Default:** auto | | vAxis.viewWindow.min | The minimum vertical data value to render. Ignored when `vAxis.viewWindowMode` is 'pretty' or 'maximized'. **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 [`ready`](https://developers.google.com/chart/interactive/docs/gallery/bubblechart#Events)event is fired. [`Extended description`](https://developers.google.com/chart/interactive/docs/reference#visdraw). **Return Type:** none | | `getAction(actionID)` | Returns the tooltip action object with the requested `actionID`. **Return Type:** object | | `getBoundingBox(id)` | Returns an object containing the left, top, width, and height of chart element `id`. The format for `id` isn't yet documented (they're the return values of [event handlers](https://developers.google.com/chart/interactive/docs/events)), but here are some examples: > `var cli = chart.getChartLayoutInterface();` > Height of the chart area > : `cli.getBoundingBox('chartarea').height` > Width of the third bar in the first series of a bar or column chart > : `cli.getBoundingBox('bar#0#2').width` > Bounding box of the fifth wedge of a pie chart > : `cli.getBoundingBox('slice#4')` > Bounding box of the chart data of a vertical (e.g., column) chart: > : `cli.getBoundingBox('vAxis#0#gridline')` > Bounding box of the chart data of a horizontal (e.g., bar) chart: > : `cli.getBoundingBox('hAxis#0#gridline')` 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): > `var cli = chart.getChartLayoutInterface();` > : `cli.getChartAreaBoundingBox().left` > : `cli.getChartAreaBoundingBox().top` > : `cli.getChartAreaBoundingBox().height` > : `cli.getChartAreaBoundingBox().width` 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: - `getBoundingBox` - `getChartAreaBoundingBox` - `getHAxisValue` - `getVAxisValue` - `getXLocation` - `getYLocation` Call this *after* the chart is drawn. **Return Type:** object | | `getHAxisValue(xPosition, optional_axis_index)` | Returns the horizontal data value at `xPosition`, which is a pixel offset from the chart container's left edge. Can be negative. Example: `chart.getChartLayoutInterface().getHAxisValue(400)`. 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](https://developers.google.com/chart/interactive/docs/printing). **Return Type:** string | | `getSelection()` | Returns an array of the selected chart entities. Selectable entities are bubbles. For this chart, only one entity can be selected at any given moment. [`Extended description`](https://developers.google.com/chart/interactive/docs/reference#visgetselection). **Return Type:** Array of selection elements | | `getVAxisValue(yPosition, optional_axis_index)` | Returns the vertical data value at `yPosition`, which is a pixel offset down from the chart container's top edge. Can be negative. Example: `chart.getChartLayoutInterface().getVAxisValue(300)`. Call this *after* the chart is drawn. **Return Type:** number | | `getXLocation(dataValue, optional_axis_index)` | Returns the pixel x-coordinate of `dataValue` relative to the left edge of the chart's container. Example: `chart.getChartLayoutInterface().getXLocation(400)`. Call this *after* the chart is drawn. **Return Type:** number | | `getYLocation(dataValue, optional_axis_index)` | Returns the pixel y-coordinate of `dataValue` relative to the top edge of the chart's container. Example: `chart.getChartLayoutInterface().getYLocation(300)`. Call this *after* the chart is drawn. **Return Type:** number | | `removeAction(actionID)` | Removes the tooltip action with the requested `actionID` from the chart. **Return Type:** `none` | | `setAction(action)` | Sets a tooltip action to be executed when the user clicks on the action text. The `setAction` method takes an object as its action parameter. This object should specify 3 properties: `id`--- the ID of the action being set, `text` ---the text that should appear in the tooltip for the action, and `action` --- the function that should be run when a user clicks on the action text. Any and all tooltip actions should be set prior to calling the chart's `draw()` method. [Extended description](https://developers.google.com/chart/interactive/docs/reference#vissetaction). **Return Type:** `none` | | `setSelection()` | Selects the specified chart entities. Cancels any previous selection. Selectable entities are bubbles. For this chart, only one entity can be selected at a time. [`Extended description`](https://developers.google.com/chart/interactive/docs/reference#vissetselection). **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](https://developers.google.com/chart/interactive/docs/basic_interactivity), [Handling Events](https://developers.google.com/chart/interactive/docs/events), and [Firing Events](https://developers.google.com/chart/interactive/docs/dev/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 bubble correlates to a row in the data table (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 bubble correlates to a row in the data table (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 `draw` method, and call them only after the event was fired. **Properties:** none | | `select` | Fired when the user clicks a visual entity. To learn what has been selected, call [`getSelection()`](https://developers.google.com/chart/interactive/docs/gallery/bubblechart#Methods). **Properties:** none | ## Data Policy All code and data are processed and rendered in the browser. No data is sent to any server.