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Data-to-chart decision in 1786: History — Section 948: History

Reading 948 of Data-to-chart decision uses “History” and figure 1786 as a checkable baseline. chart-decision · beat 1 · Check greyscale and a color-blind simulator. Keep Data-to-chart decision with “History” and 1786 from 1786. Add source, period, units; export SVG/PDF. Concise grammar for tidy data - excellent for trying encodings fast. · ISC · github.com/observablehq/plot

Match the question to an encoding - comparison, trend, part-to-whole, correlation - before opening any tool. Data-to-chart decision encodes values as task type mapped to mark and channel (length, position, angle, color). Bertin semiology; modern chooser guides and grammar-of-graphics tools. When reading the “History” stage inside the Data-to-chart decision atlas entry, recording both the reference period and the operating boundary around figure 1786 prevents common misinterpretations in real-world decisions.

In reports, ads and assignments it fits first 60 seconds of any report, ad claim or assignment figure. Skip it when picking a chart because it looks fancy in the template gallery. This page gathers anatomy, fit, craft, failure modes and work / ads / school recipes for Data-to-chart decision. Cross-checking field checklists against the comparison lab shows that metric 1786 under “History” for Data-to-chart decision never acts in isolation; it shifts alongside structural constraints and local standards.

When should I pick Data-to-chart decision? When the story is: first 60 seconds of any report, ad claim or assignment figure. When should I avoid Data-to-chart decision? Skip it in cases like: picking a chart because it looks fancy in the template gallery. Bertin semiology; modern chooser guides and grammar-of-graphics tools

Read Data-to-chart decision as 1786, “History,” and 1786. A bar with no unit is not those three. Keep Data-to-chart decision with “History” and 1786 from 1786. 17861786

Figures to keep

Reference
1786
Key figure
1786
Topic
Data-to-chart decision
Focus
History
01

Interactive Scenario & Decision Matrix

Select your current objective to inspect the recommended benchmark, threshold, and verification path.

Leave the current chart type. If a guard warning is showing, fix that field before export.

Briefing 11 for Accessible viz aligns condition “Encoding” with reference value 1917 on the ground.

Accessible viz: 1917 (2026)
02

United States (US) Institutional & Field Benchmark

US
Primary reference framework
Charts, diagrams, and studio craft with a widened workspace — pick forms, then open the studio to build.
Verification standard
Season lens: report and deck season favors defaults with strong contrast and print-safe palettes — open studio early.
Metric & unit convention
Accessible viz · 1917 (2026)

Viz pages teach chart and diagram craft for browsing and studio work — not a substitute for data ethics review or accessibility audits on shipped reports.

03

Self-Diagnostic Readiness Checklist

0 / 5

Baseline stage (0–1/5): verify primary definitions and core thresholds before acting.

04

Quantitative Distribution & Benchmark Sparkbars

Accessible viz (Encoding)1917 · 93%
Accessible viz (History)1917 · 70%
Accessible viz (Fit)1917 · 79%
Accessible viz (Shared baseline)1917 · 88%
05

5-Step Execution & Verification Playbook

  1. Paste stays on this device — JSON you paste or restore never uploads. The studio keeps work in browser memory and local storage only.
  2. sanitizeDoc and guards before render — sanitizeDoc bounds the doc, then guardShape, guardChart and plainText run on every load path. Unknown fields drop; bad docs reject instead of drawing raw.
  3. Recent boards are local — The recent list is saved on this browser. Opening or comparing a snapshot still runs sanitizeDoc first; guards are not skipped on restore.
  4. Coworker export never POSTs — A file or string from a teammate is read locally. Nothing is posted to Tool-Lifes or a third-party ingest endpoint.
  5. Compare is a second sanitize pass — Side-by-side compare loads two already-sanitized boards in memory. It is not an upload or server diff; just a second guard pass on both sides.
06

Myth vs. Evidence Fact-Check

Does the studio upload my board, CSV, or pasted JSON?

No. Work stays on this device. Nothing is posted to a server. Every load, paste, restore, undo and redo runs sanitizeDoc, then guardShape, guardChart and plainText.

What does sanitize do to JSON I paste or restore?

sanitizeDoc keeps a bounded name, shape list and chart. Unknown fields are dropped. Each shape passes guardShape; charts pass guardChart; labels pass plainText. Invalid docs are rejected, not rendered raw.

If I compare or load a recent board, does it leave this browser?

No. Recent boards are local. Compare and load still run sanitizeDoc first. guardShape, guardChart and plainText are not skipped on restore.

Can I open a coworker’s export without sending it off-device?

The file never uploads. sanitizeDoc and the guards run before render. That is not a virus scanner — only open files you trust. Studio stays sanitize-safe; the guards are not optional.

07

Domain Jargon & Terminology Decoder

1
State the question the viz must answer.
2
Prefer position/length encodings when comparing.
3
Run a contrast check before publish.
4
Open studio early; iterate marks, not themes.
Accessible viz (Audience)
Analysis 65 for Accessible viz anchors “Audience” to indicator 1917 so readers can verify the scale.
Accessible viz (Pretty equals true)
Record 66 on Accessible viz explains what the threshold 1917 means in practice under “Pretty equals true”.
08

Risk & Failure-Mode Early Warning Radar

  • Not a compliance stamp. Color, contrast, and data integrity still need human review before publication.
  • Section 72 on Accessible viz pairs “History” with benchmark figure 1917 (2026) for a grounded decision.
  • Analysis 73 for Accessible viz anchors “Fit” to indicator 1917 so readers can verify the scale.
  • Record 74 on Accessible viz explains what the threshold 1917 means in practice under “Shared baseline”.

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