Programming: Principles and Practice Using C++, 2nd Edition

15. Graphing Functions and Data

“The best is the enemy of the good.”

—Voltaire

If you are in any empirical field, you need to graph data. If you are in any field that uses math to model phenomena, you need to graph functions. This chapter discusses basic mechanisms for such graphics. As usual, we show the use of the mechanisms and also discuss their design. The key examples are graphing a function of one argument and displaying values read from a file.

15.1 Introduction

15.2 Graphing simple functions

15.3 Function

15.3.1 Default arguments

15.3.2 More examples

15.3.3 Lambda expressions

15.4 Axis

15.5 Approximation

15.6 Graphing data

15.6.1 Reading a file

15.6.2 General layout

15.6.3 Scaling data

15.6.4 Building the graph

15.1 Introduction