BubbleChart
The BubbleChart plots each channel as a bubble positioned by two values (X and Y), sized by a third, and colored by a grouping β a scatter plot with an extra size and color dimension. Use it to compare many assets across three or four metrics at once.
Experimental component
BubbleChart is currently experimental β its settings and behavior may change. With no channels bound it renders sample bubbles for preview.
Quick Start
Drag the BubbleChart onto the canvas and bind channels. Each channel becomes one bubble. In the channel's Attribute Mapping, assign attributes to the bubble's dimensions (below). Every bubble is then placed by its X/Y attributes, sized by its Size attribute, and colored by its group.
Generic Settings
Each IOTA component shares a set of generic settings. Expand each section below:
Workspace
These settings are applicable to the whole view.
Grid Properties
The grid is provided for convenience when developing dashboards as visual guides and snapping capability.
By default the work area grid is enabled and can be customized or even disabled in this menu.
| Property Name | Description |
|---|---|
| Grid Color | Color of the grid |
| Grid Size | Size of the grid step |
| Snap to Grid | Enable/Disable snapping to the grid |
| Show Grid Lines | Show the grid as lines |
| Show Grid Dots | Show the grid as dots |
Align Controls
The Align controls provides a means to align and distribute selected objects on the display.
Align Objects
- You can align several components horizontally using the
Align-left,Align-centerorAlign-rightcontrols - You can align several components vertically using the
Align-top,Align-vertical-centerorAlign-bottomcontrols
Distribute Objects
- You can distribute several components on the vertical/horizontal axis by selecting them (select at least 3 components) and pressing
Align-vertical/Align-horizontal - You can make all the selected components the same width/height by selecting them and pressing
Adjust Width/Adjust Height
Tips
Hold the Ctrl button to select several components. The oldest component is used as a reference.
Anchor Points Options
The anchor points are eight squares around an object that allow you to resize the object. The anchor point options allow you to define the appearance of the anchor points.

| Property Name | Description |
|---|---|
| Reference Point Color | Sets the color of the reference point (see Rotation and Position for more details) |
| Anchor Points Color | Sets the color of the rest of the seven anchor points |
| Point Options Color | Sets the color of the point options (only for Line and Bezier Curve) |
| Show Point Options | Show/Hide the point options |
Locked View Options
These options define the appearance of the component border in the locked view for the selected component.
| Property Name | Description |
|---|---|
| Active Border Fill | Sets the fill color of the border |
| Active Border Width | Sets the width of the border |
Variable
Every component has a unique variable name. This variable name can be used to reference the component in multi-state configurations and other scripts.
On creation, every component is given a default name. This can be overwritten to be more user-friendly. To do so simply overwrite the value in the variable input field.
Arrange / Remove

- Send Backward - move object one layer down
- Bring Forward - move object one layer up
- Send to Back - place object under all layers
- Bring to Front - place object above all layers
To send/bring objects to the front/back use the first four buttons. - Any set of components can be deleted by either using the
button or
delete/delkeyboard keys.
Rotation and Position
Reference Anchor Point- allows you to select one of the anchor points as a reference so that you can set anAngle(clockwise) of incline relative to this point.
By default the reference anchor point is the top left corner. You can also rotate the component by dragging one of the yellow corner points.- You can set the position of the component by setting the
XandYcoordinates relative to theReference Anchor Pointand the top-left corner of the work area. - You can drag any of the anchor points to change the width and height of the component, or you can set it manually by editing the
WidthandHeightboxes. - Set
Lock Aspect Ratioso that while changing width and height, the component width to height ratio stays the same Transformallows you to view the component as a mirror or a reflection of itself
Actions
Actions or multi-states are programmable conditional states handled by user-generated code.
Note
Actions that have script handlers are marked with a circle
The currently supported actions are described in the table below:
| Action | Trigger |
|---|---|
| OnCreate | When the component is created |
| OnFocus | When the component is selected |
| onClick | When the component is clicked or the selection is changed |
| onData | Each time the data changes for assigned channels |
| onTick | 20 times per second |
| onDblClick | On mouse double click |
| onHover | When the mouse is over the component (and not when the mouse is not) |
Further Reading
For helping you in writing your own actions, consider exploring the available Actions Deep Dive, as well as the Quick Start manual.
Also, multiple articles are available in IOTA's Knowledge Base.
Global Time Control
To activate the Global Time Control panel click on button in the upper area of the
View:

Additionally, you can configure the Global Time Control option in Settings for every component on the current display.
Use Component as Global Time Control: if enabled, the component is able to set the time context for all components on the current display.Ignore Global Time Control: when enabled, the option allows the component to function independent of global time set elsewhere.
The example below demonstrates the usage of the Global Time Control panel and how the value changes in the space of an hour:

Channels
The Channels section lists data that is assigned/mapped onto the component.
In this menu, you can change the data value color, adjust the display properties and un-assign or remove the data from the component.
Properties
The properties menu for Channels allows you:
- to modify the Label of the DataSource
- to set UOM, lower and upper values
- to choose number format and displayed digits
- to adjust the line formatting for trend line components
- to configure the additional regression lines that can be plotted for supported components

BubbleChart Settings
Dimensions (Attribute Mapping)
Each bubble maps attributes to five slots β set these in the channel's Attribute Mapping:
- X β horizontal position.
- Y β vertical position.
- Size β bubble radius.
- Group By β drives the bubble's color and legend group.
- Marker Label β text drawn at the bubble's center.
Each slot can also use built-in values instead of an attribute: Duration (end β start), Asset Name, or Group Count.
Scales & Cursors
Show Scale,Scale Inside.- X / Y Discrete β band scale (categories) vs. linear.
- X / Y scale sort (none / ascending / descending) and tick count.
- X and Y scale limits β Auto or Custom (Lower/Upper).
- Bubble size limits β Auto or Custom lower/upper, with a pixel radius range (default 5β20 px).
Visual Properties, Tooltip, Font
- Border, background, marker-label color, grid and scale-label colors.
- Tooltip: current value, archive values, and interval summaries (Avg/Min/Max/StdDev/β¦).
- Separate font settings for title, values, and labels.
3D
- Enable 2D (default) or Enable 3D β 3D renders the bubbles as an animated point cloud.
Behavior
- A bubble with a non-numeric X, Y, or Size is flagged bad and drawn as a red dashed hollow circle at the axis floor.
- With no channels bound, the chart shows random sample bubbles (preview).
Related
- XY Chart β a two-dimensional scatter without the size/color dimensions
- RadarChart β compare assets across many metrics as polygons
- Understanding Asset Hierarchies β attribute mapping