Visuals is an umbrella concept covering interactive devices representing data. They are displayed in the UI.
Overview
The following image indicates the key visual elements in Spotfire, but
there is more than meets the eye. Features such as expressions and trellis
visualizations, not to mention the diversity of visualizations, each with
an individual feature set, are also analytic resources close at hand.
Visuals
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Visualizations
Visualizations represent data. A visualization displays data from one data table. It shows and allows modification to one marking. The data displayed is limited by the filtering of the page or the intersection of several markings.
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Expressions
Expressions are used to create new columns, but are just as powerful when applied to axes. They are recalculated on the fly in response to changes in the analysis, and by axis binding they can be used set an axis dynamically in response to marking. Expressions may involve one or more columns, aggregation measures, or mathematical expressions.