Chapter 9. Color, style, and appearance

This chapter covers

  • Global appearance options
  • Color
  • Lines and points
  • Size and aspect ratio

Whereas the previous few chapters dealt with very local aspects of a graph (such as an individual curve, a single text label, or the details of tic mark formatting), the present chapter addresses global issues. We begin with a long and important section on color. Color is an exciting topic, and it opens a range of options for data visualization; I’ll explain gnuplot’s support for color handling in detail.

Next, we discuss a few details that matter if you want to modify the default appearance of point types, dash patterns, and the automatic selection of visual styles. The overall size and aspect ratio of the ...

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