在直方图中绘制两条点线(gnuplot)? [英] Draw two pointlines in a histogram (gnuplot)?

问题描述

我想通过gnuplot在直方图中绘制两条点线，结果图不完全是我想要的.实际上，我希望两个点线中的点(粉红色的点和浅绿色的点)对准两种类型的支柱的中心，因此浅绿色的点保持静止，而粉红色的点向右移动一点，就像黑色的点我已经画了.

I want to draw two pointsline in a histogram by gnuplot, The result chart is not exactly what I wanted. Actually, I want points in two pointlines(the pink one and the lightgreen one) align the center of two types of pillars, so the lightgreen one keeps still, while the pink one move a little to the right, just like the black one I have drawn.

"test.dat"如下:

the 'test.dat' is as follow:

1   10  15  8   22 
2   11  19  7   21
3   9   14  7   19
4   10  21  8   23
5   9   17  9   21

和"plt"文件:

set style data histogram
unset key 
set yrange[0:12]
set y2range[0:25]

plot "test.dat" using 2:xticlabel(1) axis x1y1,\
"test.dat" using 3:xticlabel(1) axis x1y2 with linespoints,\
"test.dat" using 4:xticlabel(1) axis x1y1,\
"test.dat" using 5:xticlabel(1) axis x1y2 with linespoints

推荐答案

我的答案基于

My answer is based on this contribution which uses boxes instead of a histogram. The benefit is that, you know exactly where those boxes are placed, which you can exploit for the line plot.

这是代码:

dx=1.
n=2.
total_box_width_relative=0.25
gap_width_relative=0.1
d_width=(gap_width_relative+total_box_width_relative)*dx/n  
set boxwidth total_box_width_relative/n relative  
set style fill transparent solid 0.5 noborder

plot "test.dat" u ($1):2 w boxes lc rgb"green" notitle,\    
     "test.dat" u ($1+d_width):4 w boxes lc rgb"red" notitle,\
     "test.dat" u ($1):3 w linespoints notitle,\              
     "test.dat" u ($1+d_width):5 w linespoints notitle        

set yrange [0:15]
replot

对代码的一些解释:

• 应根据您的数据文件选择dx，否则框的间距将不可用.
• 盒子的数据集数量由n
给出
• total_box_width_relative和gap_width_relative控制框的轴向间距和间距
• 两个set ...命令控制盒子的外观
• 在plot命令中，您现在必须分开:使用原始的第一列数据调用一组框和线:($1)，但是，对于第二组框和相应的线，则选择定义的轴向偏移量:($1+d_width)-这将确保折线图中的数据点与框对齐
• 可能需要包含set yrange命令

• The dx should be selected according to your data file, otherwise the spacing of the boxes will be off.
• The number of data-sets for the boxes is given by n
• The total_box_width_relative and gap_width_relative control the axial with and spacing of the boxes
• the two set ... commands control the appearance of your boxes
• within the plot command you now have to separate: You call one set of boxes and lines with the original 1st column data: ($1), however, for the second set of boxes and the corresponding line, you choose your defined axial offset: ($1+d_width) - this will ensure that the data points from the line plot will align with the boxes
• it may be necessary to include a set yrange command

情节如下所示:

注意
我根据您提供的数据更改了折线图的数据.这样做只是为了使这些点更接近方框并说明效果.

Note
I changed the data for the line plots with regard to the data you provided. This was done only to bring the points closer to the boxes and illustrate the effect.

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