gnuplot直方图:如何在条形图上放置值

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我有以下数据:

1 3215 2 321 ... 31_60 59 60+ 32

我想使用gnuplot生成直方图，并将bar的值放在其顶部.

I would like to generate histogram using gnuplot and put the value of bar on top of it.

这是我尝试创建直方图的gnuplot命令:

Here is the gnuplot command I tried to create histogram:

set style data histogram set xtics rotate plot 'file.dat' using 2:xtic(1)

有人可以告诉我如何在生成的条形图的顶部添加值吗?

Can someone tell me how to add values on top of the bars generated?

我发现了以下与链接相关的直方图( gnuplot-tricks.blogspot/2009/10/more-on-histograms.html )，但没有确切了解其作用.

I found the following link related histogram (gnuplot-tricks.blogspot/2009/10/more-on-histograms.html), but didnt get what its doing exactly.

推荐答案

以此为示例数据文件 Data.dat :

1 10 2 20 3 15 4 16 5 19 6 5

您可以运行以下脚本来显示框及其上方的框的相应值:

You could run this script to display boxes and the corresponding value of that box above it:

set key off plot 'Data.dat' with boxes fill pattern 1, '' u 1:($2 + 0.5):($2) with labels

注意 u 1:($ 2 + 0.5):($ 2)，其中 0.5 指定框上方的值.

Notice the u 1:($2 + 0.5):($2) where the 0.5 specifies how much the value is above the box.