tufte-tables-and-text-tables
Tables and Text-Tables: The Choice of Design
Overview
Tufte treats the table not as the graphic's poor relation but as one rung on a continuous ladder of display formats — sentence, text-table, table, semi-graphic, graphic — with the choice governed by the content, the extensiveness of the labels, and the volume and ordering of the data (p. 178). Two findings anchor the skill: tables usually beat graphics for small data sets of roughly twenty numbers or fewer (p. 56), and a single well-structured supertable can outperform whole fields of little charts (p. 179). Between the plain table and the full graphic sits a rich middle territory — semi-graphic tables that keep exact values and row/column addressability while borrowing position, slope, spacing, or glyphs from graphics (pp. 145, 158–159, 174, 180).
This skill is the deep treatment of that territory. Siblings touch it in passing: tufte-data-density §12 states the supertable-beats-chart-litter claim as a density result; tufte-aesthetics-and-technique §6 compresses the format ladder into one selection table; tufte-multifunctioning-elements carries the general doctrine behind two of the hybrids here (data-as-grid, viewing architecture). Cross-reference them; the table-design grammar lives here. For the typography inside numeric columns, see tufte-typography-for-data.
§1. The Format Ladder — Five Rungs (pp. 178–180)
Tufte names three basic structures for showing data — sentence, table, graphic — and notes that two or three of them frequently belong together in one display (p. 178). Expanded to its full resolution, the ladder has five rungs:
| Rung | Structure | Effective dimensions | Best for | Breaks down when |
|---|---|---|---|---|
| 1. Sentence | Numbers embedded in running prose | <1 — linear word-flow, folded at arbitrary points | One or two numbers in context | Three or more numbers need comparing |
| 2. Text-table | Numbers pulled out of the prose and aligned in a small labeled column | 1 — a single ordered list | A handful of values the reader should compare | Multiple variables or many rows appear |
| 3. Table | Rows × columns of exact values, ordered and clustered | 2 — row and column addressing | Exact values; small data sets; many localized comparisons | Only overall shape or pattern matters and n is large |
| 4. Semi-graphic | A table wearing one or two graphical properties (position, slope, glyph, spacing) | 2+ — lookup plus visual pattern | Highly labeled numbers; simultaneous exact-value and pattern reading | The graphical dressing costs more than it reveals |
| 5. Graphic | Full visual encoding | 2 spatial + retinal channels | Large data sets; shape, trend, distribution, exception | The data set is small — the apparatus outweighs the content |
"The conventional sentence is a poor way to show more than two numbers because it prevents comparisons within the data." — Tufte, VDQI, p. 178