Chapter 1, Context of Data Visualization, gave us some initial idea about the definition, context, and relevance of data visualization. We learned about the intersection that exists between art and science and outlined the significance of visual perception.
We also discussed the proposed value of a data visualization methodology and, ahead of our design process, learned about some key objectives we need to bear in mind throughout our work.
In this second chapter, we start the design methodology with the vital task of identifying the purpose of your visualization.
Before you undertake any design work, you have to be clear about the motivation behind a project's inception. This involves identifying who it is for and what needs you are trying to fulfill; this has a big influence on the scope of your work.
The second aspect of purpose will take a close look at the intention behind your project and how you define the visualization's function...