Attribute Heat Map

A heat map (or heatmap) is a data visualization technique that shows magnitude of a phenomenon as color in two dimensions. The variation in color may be by hue or intensity, giving obvious visual cues to the reader about how the phenomenon is clustered or varies over space.

The widget shows a heat map coming from an attribute. It does not accept scalar or spectrum attributes, only two-dimensional attributes.

Widget setting

The following image shows an example of a widget setting.

It is possible to customize the widget settings from the inspector panel (in edit mode), as shown below:

Input value	Description
Device	Type in a device name (or * to list all devices)
Attribute	Once a device is selected, type in an attribute name (or * to list all available attributes)
X-axis	Type the device and attribute to use for the x-axis (or * to list all available devices and attributes)
Y-axis	Type the device and attribute to use for the y-axis (or * to list all available devices and attributes)
X-axis Scientific Notation	Enable this option to display the X-axis values in scientific notation
Y-axis Scientific Notation	Enable this option to display the Y-axis values in scientific notation
X-axis Logarithmic Scale	Enable to apply a logarithmic scale to the X-axis
y-axis Logarithmic Scale	Enable to apply a logarithmic scale to the Y-axis
Show Title	Show the title on top of the heat map. The title is the attribute name
Show Tango Database Name	Displays the tango database name in front of the attribute name
Attribute Display	Select the Label, Name, or None for the attribute
Fixed Scale	Uses a fixed scale if enable
Max Scale	Represent the number of the max scale. Set to 30 by default
Min Scale	Represent the number of the min scale. Set to 1 by default
Colorscale	Select a colorscale from a predefined list of available options