Data Visualization in Environmental Public Health: From Data to Insight
Figure 14 Using Titles and Labels to Highlight Critical Violation Findings
Make the Takeaway Visible Design choices can help direct the audience's attention to the most important takeaway. Titles, captions, labels, and annotations can guide interpretation. These additions should provide context without overwhelming the visual. Accessibility considerations apply here, too; clear labels, sufficient contrast, and non-color-dependent cues (see the Accessibility section) make the takeaway legible to every viewer, not just some. For example, a general title such as “Critical Violations by County” identifies the topic but leaves the audience to decide what matters. A more descriptive title immediately communicates the primary finding. Sorting the counties by violation rates makes the pattern easier to see, while labels and a brief callout draw attention to the counties with the largest rates. Titles and annotations should help audiences recognize the key message without requiring them to interpret every value.
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