如何为gnuplot创建数据文件? [英] How to create a data file for gnuplot?

问题描述

我正在尝试使用gnuplot制作图形.我指定了xrange，yrange和labels，但是当我键入以下命令时:

I'm trying to make a graph with gnuplot. I specified my xrange, yrange, and labels, but when I typed in the following command:

gnuplot>使用1:2线条绘制"data.txt"

gnuplot> plot "data.txt" using 1:2 with lines

gnuplot告诉我:

gnuplot tells me:

警告:跳过无法读取的文件"data.txt"，图中没有数据.

warning: Skipping unreadable file "data.txt" No data in plot.

我不明白我的数据文件是如何不可读的.这是我的data.txt的样子:

I don't understand how my data file is unreadable. This is what my data.txt looks like:

X       Y  [I didn't enter X and Y into my text file]

10000   0.030
5000    0.02
1000    0.012

我知道我一定做错了-这是我第一次使用gnuplot.我尝试过进行Google搜索，以了解如何制作适当的data.txt文件.

I know I must be doing something wrong -- this is my first time using gnuplot. I tried doing a Google search on how to make a proper data.txt file turns up zilch.

我觉得在编程问答网站上问这听起来很奇怪，但是带有数据的典型文本文件应该是什么样?我不是计算机程序员，而只是一个本科生试图为她的生物化学课绘制图表.

I feel like this may sound strange to ask at a programming Q&A site, but what should a typical text file w/data look like? I'm no computer programmer, just an undergrad trying to plot a graph for her biochemistry class.

推荐答案

plot "data.txt" using 1:2 with lines 

为我工作.您的数据文件中实际上是否有空行?这将导致一个空的情节.您可以看到没有数据的地块吗?就像情节x * x.如果没有，那么您的终端可能设置不正确.

works for me. Do you actually have blank lines in your data file? That will cause an empty plot. Can you see a plot without data? Like plot x*x. If not, then your terminal might not be set up correctly.

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