gnuplot中的水平条形图 [英] Horizontal bar chart in gnuplot

问题描述

在谷歌搜索水平gnuplot条形图"时，我可以找到的第一个结果

 重置$ heights<<排爆爸爸181妈妈170儿子100女儿60排爆设置yrange [0:*]#从零开始，从数据中找到最大值设置boxwidth 0.5#使用固定宽度的盒子取消键#关闭所有标题设置样式填充纯色#纯色框设置颜色podo设置Xtic旋转90比例0未定论设置y2tics旋转90使用0:2:($ 0 + 1):xtic(1)使用框lc变量绘制'$ heights' 

有更好的方法吗?

解决方案

您所指的链接来自大约.2009年.gnuplot从那时起就发展起来了.按照@Christoph的建议，请选中 help boxxyerror .

代码:

  ###水平条形图重置会话$ Data<<排爆爸爸181妈妈170儿子100女儿60排爆设置yrange [0:*]#从零开始，从数据中找到最大值设置样式填充纯色#纯色框取消键#关闭所有标题myBoxWidth = 0.8设置偏移量0,0,0.5-myBoxWidth/2.，0.5使用2:0:(0):2:($ 0-myBoxWidth/2.):($ 0 + myBoxWidth/2.):(($ 0 + 1):ytic(1)和boxxyerror lc var绘制$ Data###代码结尾 

结果:

添加:

做什么 2:0:(0):2:($ 0-myBoxWidth/2.):($ 0 + myBoxWidth/2.):($ 0 + 1):ytic(1)是什么意思?

好吧，它看起来比实际要复杂.选中 help boxxyerror .从手册中:

6列: x y xlow xhigh ylow yhigh

所以，总共:

1. x从第2列获取值，但此处不那么相关，因为我们将使用xyerror框
2. y接受伪列 0 ，它是从零开始的行号，请检查 help伪列，但在这里也不太相关
3. xlow (0)表示固定值为零
4. 第2列的xhigh值
5. ylow ($ 0-myBoxWidth/2.)，行号减去boxwidth的一半
6. yhigh ($ 0 + myBoxWidth/2.)，行号加上框宽的一半
7. ($ 0 + 1)与 ... lc lc :颜色取决于行号，从1开始
8. ytic(1):第1列作为ytic标签

由于某些原因(我不知道)，gnuplot似乎仍然没有方便的水平直方图绘制样式，但是至少它提供了这种 boxxyerror 解决方法.

When Googling "horizontal gnuplot bar chart", the first result I could find http://www.phyast.pitt.edu/~zov1/gnuplot/html/histogram.html suggests rotating (!) the final bar chart which seems rather baroque. Nonetheless I tried the approach but the labels are cut off.

reset
$heights << EOD
dad                     181
mom                     170
son                     100
daughter        60
EOD

set yrange [0:*]      # start at zero, find max from the data
set boxwidth 0.5      # use a fixed width for boxes
unset key             # turn off all titles
set style fill solid  # solid color boxes

set colors podo

set xtic rotate by 90 scale 0
unset ytics
set y2tics rotate by 90

plot '$heights' using 0:2:($0+1):xtic(1) with boxes lc variable

Is there a better approach?

解决方案

The link you are referring to is from approx. 2009. gnuplot has developed since then. As @Christoph suggested, check help boxxyerror.

Code:

### horizontal bar graph
reset session

$Data << EOD
dad         181
mom         170
son         100
daughter     60
EOD

set yrange [0:*]      # start at zero, find max from the data
set style fill solid  # solid color boxes
unset key             # turn off all titles

myBoxWidth = 0.8
set offsets 0,0,0.5-myBoxWidth/2.,0.5

plot $Data using 2:0:(0):2:($0-myBoxWidth/2.):($0+myBoxWidth/2.):($0+1):ytic(1) with boxxyerror lc var
### end of code

Result:

Addition:

what does 2:0:(0):2:($0-myBoxWidth/2.):($0+myBoxWidth/2.):($0+1):ytic(1) mean?

Well, it looks more complicated than it is. Check help boxxyerror. From the manual:

6 columns: x y xlow xhigh ylow yhigh

So, altogether:

1. x take value from column 2, but not so relevant here since we will use the xyerror box
2. y take pseudocolumn 0 which is line number starting from zero, check help pseudocolumns, but not so relevant here as well
3. xlow (0) means fixed value of zero
4. xhigh value from column 2
5. ylow ($0-myBoxWidth/2.), line number minus half of the boxwidth
6. yhigh ($0+myBoxWidth/2.), line number plus half of the boxwidth
7. ($0+1) together with ... lc var: color depending on line number starting from 1
8. ytic(1): column 1 as ytic label

For some reason (which I don't know) gnuplot still doesn't seem to have a convenient horizontal histogram plotting style, but at least it offers this boxxyerror workaround.

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