使用gnuplot绘制与边链接的点 [英] Plot points linked with edges using gnuplot

问题描述

我有一个使用gnuplot绘制的点(x，y)文件.如果我有另一个文件显示通过边缘将哪个点与另一个点链接(例如，链接到(4,7)的(3.8，6))，是否可以在点之间可视化/绘制该边?

I have a file of points (x, y) that I plot using gnuplot. If I have another file that shows which point is linked with which other point by an edge (e.g. (3.8, 6) linked to (4,7)), is it possible to visualise/plot this edges between points ?

推荐答案

根据数据的组织方式，您可能需要考虑绘制with vectors. 例如，如果您的数据文件如下所示:

depending on how your data is organized, you may want to look into plotting with vectors. For example, if your datafile looks like:

#x1 y1 x2 y2
 1  1  3   3

您可以使用以下方法绘制此图:

You can plot this using:

set style arrow 1 nohead
plot "my_arrows.dat" using 1:2:($3-$1):($4-$2) with vectors arrowstyle 1

编辑

假设重复数据文件中的所有点，则可以执行以下操作:

Assuming all the points in your datafile are repeated, you can do the following:

set style arrow 1 nohead
plot "my_arrows.dat" using 1:2:($3-$1):($4-$2) with vectors arrowstyle 1,\
     "my_arrows.dat" using 1:2 w points

如果不再重复，则可以执行以下操作:

If they're not repeated, you can do:

set style arrow 1 nohead
plot "my_arrows.dat" using 1:2:($3-$1):($4-$2) with vectors arrowstyle 1,\
     "my_arrows.dat" using 1:2 w points ls 1 lc rgb "red" pt 1,\
     "my_arrows.dat" using 3:4 w points ls 1 lc rgb "red" pt 1

请注意，您可以使用线型(linecolor或lc，pointtype或pt，linewidth或lw等，使点看起来相同.)

Note that you can play around with the linestyles (linecolor or lc, pointtype or pt, linewidth or lw etc. to make the points appear the same.)

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