Trellised Visuals

Trellis charts are grouped sets of visuals that represent different partitions (segments) of the dataset in the same chart type, scale, and axes. This makes the comparison of sub-groups very intuitive. Trellis charts are sometimes called lattice charts, grid charts, panel charts, or small multiples.

Any chart type that uses the X and Y axes explicitly may be trellisable, depending on the dataset. What is required is an extra entry on either the X or Y shelf; the first field on the shelf represents the segment definition of the trellis, and the second field is the actual dimension. Some charts types have optional X and Y shelves so that trellises may be enabled.

A dataset may be double-trellisable — you could declare a 'partition' on both X and Y shelves at the same time.

You can find thorough examples of creating charts trellised on dimensions in the following articles:

Some visual types (bars, lines, areas, and grouped bars) support trellising on measures.