Bubble Overlay Chart

Like the bubble chart, the bubble overlay chart is used to observe the relationship between data points, with the dimension of the marker to allow comparison between three variables rather than just two, plus an overlay map to indicate the location of the markers.

To create the bubble overlay chart, two sets of dataset and a map are required. One set of dataset is used to show the relationship and another set of dataset is used to indicate the XY location on the map.

The following is a list of the fields in the View Properties box in the dashboard designer for bubble overlay chart. There are some required fields to be set for each created view.

Do note that the overlay image is unable to be displayed properly in Safari browser.

Basic Properties

The View Properties fields vary in different charts. Below are the basic properties in the View Properties box.

Field Description Mandatory
View Type Type of chart, table or view. Yes
Title Name of the view. No
Dataset Data used for the chart, table or view. Yes
Subset Partial data from a dataset used for the chart, table or view. No
Group Places the output of the dataset/subset into separate groups or data traces based on field selected. Yes
BubbleId BubbleId groups the output into separate groups based on the selected value. Yes
Value Used as main output point.
Determines the size of each portion based on the selected “Aggregation”.
Yes
Aggregation Data aggregation refers to the accumulation of the data by count, average, or summation.
By default, count is selected.
Yes
Radius Defines the field to display as the bubble against the fields in the X and Y axes. Yes
Radius Aggregation Determines the operation to be applied on the values in the “Radius” field.
Depending on the field type of “Radius”, the options available may vary.
Possible options are count, average, and/or summation.
Yes
Overlay Defines the location or link of the overlay map. Yes
Bubble
Dataset Data used for the chart, table or view. Yes
Subset Partial data from a dataset used for the chart, table or view. No
Id Defines the key that corresponds to the BubbleId defined from the first dataset. Yes
Label Defines the label of the bubble. No
Description Brief description of the label. No
X X values be set on the X axis. Yes
Y Y values be set on the Y axis. Yes
Radius Defines the field to display as the bubble against the fields in the X and Y axes. Yes
Radius Aggregation Determines the operation to be applied on the values in the “Radius” field.
Depending on the field type of “Radius”, the options available may vary.
Possible options are count, average, and/or summation.
Yes
Colour Selects the field that defines the colour scheme for the markers.
By default, this field is not selected.
No

The dataset and subset data derive from Datasets module. Choose the right chart from the View Type and data points to build a view. Also, be consistent in using the color scheme and formatting.

Other Properties

The other property fields are available to enhance the view. Below are the other properties in the View Properties box for the bubble overlay chart.

Field Description Default
Controlled By Links dashboard controls to the view.
One or more controls can be added to affect the data displayed on the view.
Empty
Colour Scheme Determines the color palette used for the view. Default
Colour Selects the field that defines the colour scheme for the markers. Not selected
Max Bubble Size Maximum size of the bubble. 30
Min Bubble Size Minimum size of the bubble. 10
Legend Chooses the chart legend visibility in the Legend properties as well as how you want to display the legend. The legend orientation displays either in vertical or horizontal order. Selected
Hover Template Customise the content shown when hovering over the view. Empty
Click to Page Adds a link to another view. Empty
Click to Page Tip Adds a brief description of the link above. Empty
Maximisable If selected, places a maximise button on the top right of the view (when not in edit mode).
This will maximise the view to fill the browser.
Not selected
Margins Allows adjusting margins and padding between charts and grid. Default settings
Advanced Add a special CSS class, data script and/or layout overview to the view. Empty
Config Options Config Options consists of the following:
- Scroll Zoom - allows the mouse wheel to zoom in/out of the chart
- Display Modebar - controls whether the bar of icons at the top right of the chart should appear always, never or only when hovering over the chart
- Hide Modebar buttons - chooses which buttons (icons) to include in the Modebar
Default settings