添加水平线直方图gnuplot [英] add horizontal line histogram gnuplot

问题描述

我想在gnuplot的直方图中添加一条水平线，这可能吗?

I would like to add a horizontal line in my histogram in gnuplot, is that possible?

我的直方图在x轴上显示:alea1 alea 2 alea3 nalea1 nalea 2 nalea 3 且y轴从0到25.

My histogram has on the x axis: alea1 alea 2 alea3 nalea1 nalea 2 nalea 3 and the y axis goes from 0 to 25.

在22岁时，我想添加一条从直方图的一端一直延伸到另一端的水平线.

At 22, I want to add a horizontal line that goes all the way across from one end to the other end of the histogram.

推荐答案

尝试添加

, 22 title ""

在绘图命令的末尾.适用于我的测试数据(文件"histo"):

at the end of your plot command. Works for my test data (file "histo"):

# Year  Red   Green  Blue
1990    33    45     18
1991    35    42     19
1992    34    44     14
1993    37    43     25
1994    47    15     30
1995    41    14     32
1996    42    20     35
1997    39    21     31

plot "histo" u 2 t "Red" w histograms, "" u 3 t "Green" w histograms, "" u 4 t "Blue" w histograms, 22 title ""

(摘自Gnuplot in Action)Philip K. Janert)

(taken from Philip K. Janert, Gnuplot in Action)

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