Database Reference
In-Depth Information
H e ATM APS
The chloropleth map shown in the previous section is in fact a specialized
type of heatmap in which the size and shape of the individual items are based
upon GIS shapes such as countries or states. A heatmap uses the color of the
item to convey one dimension, and the size to convey another. This has often
been used in stock-market analyses, where size is used to show either market
capitalization, or the size of the investor's holding, and color has been used to
show the performance of the share. Figure 16-18 is an example of a chloropleth.
FI gu R e 16 -18 A heatmap of stock prices
SuMMARy
In this chapter you learned about some other common types of visualizations.
Many of these, such as infographics and periodic tables especially, are likely
to be handcrafted, and so won't be data driven—but they can still be useful
in the decision-making process.
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