Chapter 4. Managing data sets and files

This chapter covers

  • Data-file formats and options
  • Managing structured data sets
  • Accessing columns and pseudocolumns
  • Pseudofiles and input/output redirection
  • Metadata in data files

Working with data is what gnuplot is all about. Data is usually presented to gnuplot as files, and in this chapter you’ll learn a range of useful tricks that can make you more productive when working with gnuplot.

We’ll begin with a review of gnuplot’s standard file format and discuss options to modify its defaults. We’ll then look at some special gnuplot syntax to pick out only parts from larger files. This is required when dealing with data sets that are larger or more complicated than the straightforward ones you’ve ...

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