gnuplot不识别语法的情节 [英] gnuplot not recognizing plot for syntax

问题描述

我有一个数据文件colhead.dat：

  Id a1 a2 a3 
 1 1 2 3 
 2 2 3 4 
 3 2 3 4 
  

继以下答案 https://stackoverflow.com / a / 17525615/429850 ，我做了

  gnuplot> （i）
 ^ 
'：'expected 
   pre> 
 
 
我如何编写for循环？这是gnuplot版本的头文件
 
 pre $ 版本4.2 patchlevel 6 
上次修改时间2009年9月
系统：Linux 2.6。 32-71.el6.x86_64 
  

解决方案

已经在gnuplot的4.6版本中实现了，之前版本中没有任何循环。所以你必须更新你的版本！

---

编辑：正如Christoph提到的， 4.4中引入了code>功能。不过，4.2太旧了。

I am trying to use the for syntax for multiple columns.

I have a data file colhead.dat:

Id a1 a2 a3
1  1  2  3
2  2  3  4
3  2  3  4

Following the answer https://stackoverflow.com/a/17525615/429850, I do

gnuplot>  plot for [i=2:5] 'colhead.dat' u 1:i w lp title columnheader(i)
                    ^
         ':' expected

How do i write the for loop? Here's the gnuplot version header

Version 4.2 patchlevel 6
last modified Sep 2009
System: Linux 2.6.32-71.el6.x86_64

解决方案

For-loops have been implemented in version 4.6 of gnuplot, and there was nothing like loops in the versions before. So you have to update your version!

---

Edit: As Christoph mentioned, first for functionality was introduced in 4.4. However, 4.2 is too old.

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