Introduction. 1 Telling Stories with Data. More Than Numbers. What to Look For. Design. Wrapping Up. 2 Handling Data. Gather Data. Formatting Data. Wrapping Up. 3 Choosing Tools to Visualize Data. Out–of–the–Box Visualization. Programming. Illustration. Mapping. Survey Your Options. Wrapping Up. 4 Visualizing Patterns over Time. What to Look for over Time. Discrete Points in Time. Continuous Data. Wrapping Up. 5 Visualizing Proportions. What to Look for in Proportions. Parts of a Whole. Proportions over Time. Wrapping Up. 6 Visualizing Relationships. What Relationships to Look For. Correlation. Distribution. Comparison. Wrapping Up. 7 Spotting Differences. What to Look For. Comparing across Multiple Variables. Reducing Dimensions. Searching for Outliers. Wrapping Up. 8 Visualizing Spatial Relationships. What to Look For. Specific Locations. Regions. Over Space and Time. Wrapping Up. 9 Designing with a Purpose. Prepare Yourself. Prepare Your Readers. Visual Cues. Good Visualization. Wrapping Up. Index.