从python调用gnuplot [英] Calling gnuplot from python

问题描述

我有一个python脚本，经过一番计算后，它将生成两个格式为gnuplot输入的数据文件.

I've a python script that after some computing will generate two data files formatted as gnuplot input.

如何从python中调用" gnuplot?

How do I 'call' gnuplot from python ?

我想将以下python字符串作为输入发送到gnuplot:

I want to send the following python string as input to gnuplot:

"plot '%s' with lines, '%s' with points;" % (eout,nout)

其中' eout '和' nout '是两个文件名.

where 'eout' and 'nout' are the two filenames.

PS: 我更喜欢，不要使用其他python模块(例如gnuplot-py)，而只能使用标准API.

PS: I prefer not to use additional python modules (eg. gnuplot-py), only the standard API.

谢谢

推荐答案

一种简单的方法可能是只编写包含gnuplot命令的第三个文件，然后告诉Python用该文件执行gnuplot.假设您写

A simple approach might be to just write a third file containing your gnuplot commands and then tell Python to execute gnuplot with that file. Say you write

"plot '%s' with lines, '%s' with points;" % (eout,nout)

到名为tmp.gp的文件.然后您可以使用

to a file called tmp.gp. Then you can use

from os import system, remove
system('gnuplot tmp.gp')
remove('tmp.gp')

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