Spark Lines
Spark Lines refers to a visualization that uses multiple small line graphs that are designed to be read and compared quickly. The goal of Spark Lines is to give a visualization that can be understood at a glance. You aren't trying to communicate exact values, but rather give the audience the ability to quickly understand trends, movements, and patterns.
Among various uses of this type of visualization, you may have seen Spark Lines used in financial publications to compare movement of stock prices. Recall, that in Chapter 1, Taking Off with Tableau, we considered the initial start of a Spark Lines visualization as we looked at iterations of line charts. Here is a far more developed example:
This chart was built using the following ...
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