Data visualization expert Matt Francis examines ways of visualizing geographic data and questions whether a map is the best option if the data itself has no geographical significance.
- [Instructor] There's a temptation that…where we have geographic data we put it into a map.…Now in some cases that could be a really good choice…and can enhance your visualization,…but other times it can actually be a hindrance…to understanding what's going on in the data.…We can look at two examples,…one where a map is a good choice of the visualization…and the other where it's actually hurting our understanding.…Rules I'll talk about, one particular thing…you have to bear in mind, colors with mapping.…So first of all, let's just build a map,…so we're going to do a filled map…where each state is going to be colored…by the amount of sales that that state's produced.…
This is a common kind of visualization…that you tend to see with a map.…We'll color in each state by a particular value.…The darker the color indicates the higher the value…that we're encoding.…Now the problem is, is that when we look at this map,…we see large areas of color, not necessarily the intensity…of the color.…One of the things we might want to see from this map is…
Author
Released
11/24/2016- Explain the importance of data visualization.
- Determine when an infographic or an exploratory dashboard would be most appropriate.
- Identify the elements of a Gantt chart.
- Recall the characteristics of four kinds of distribution.
- Recognize the drawbacks of using a pie chart.
- Explain when to use a symbol map.
Skill Level Intermediate
Duration
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with Matt Francis2h 24m Intermediate
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Introduction
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Welcome1m 7s
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Exercise files1m 18s
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1. The Rules of Effective Data Visualization
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Why visualize data?6m 34s
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2. Comparing Data Sets
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Visualize comparisons in data10m 10s
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Bar charts across categories2m 46s
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Line charts over time4m 52s
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3. Data Relationships
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4. Distributions with Your Dataset
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Visualize data distributions5m 39s
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5. Compositions of Data
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Visualize data composition4m 19s
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Stacked bar charts4m 53s
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100% stacked bars5m 9s
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Stacked area chart3m 26s
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100% stacked area chart2m 24s
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6. Geographic Data
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Visualize geographic data9m 16s
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When to map geographic data4m 21s
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Conclusion
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Next steps53s
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Video: When to map geographic data