gnuplot 4.0: a portable interactive plotting utility
介绍gnuplot 4.0，一款支持多平台、多终端类型的免费交互式绘图工具，新增非线性回归功能，对使用LaTeX的计量经济学研究者尤其有用。
Abstract gnuplot , under active development since 1986, is an interactive plotting utility for UNIX, IBM OS/2, MS Windows, DOS, Apple Macintosh, VMS, Atari and many other platforms. It is free and open source, though it is not licensed under the GPL, nor is it GNU software. gnuplot supports a number of ‘terminal’ types including interactive screen terminals, pen plotters, printers, and pseudo‐devices like LATEX, metafont, pdf, svg, and bitmap png. As of version 4.0 it also incorporates nonlinear regression routines (formerly gnufit ). This software may be of interest to econometricians, particularly those who use LATEX in their work. Copyright © 2006 John Wiley & Sons, Ltd.